//www.koonmotors.com/news/matter_energy/spintronics/ Spintronics. Read the latest research news on spintronics, including exotic properties and breakthroughs that hold promise for next-generation computers. en-us Fri, 08 Sep 2023 12:22:01 EDT Fri, 08 Sep 2023 12:22:01 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/matter_energy/spintronics/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/09/230905125037.htm Researchers have pushed the limits of the possible in the field of atomic-scale spin-optics, creating a spin-optical laser from monolayer-integrated spin-valley microcavities without requiring magnetic fields or cryogenic temperatures. Tue, 05 Sep 2023 12:50:37 EDT //www.koonmotors.com/releases/2023/09/230905125037.htm //www.koonmotors.com/releases/2023/08/230830131937.htm Researchers have developed a new approach to building quantum repeaters, devices that can link quantum computers over long distances. The new system transmits low-loss signals over optical fiber using light in the telecom band, a longstanding goal in the march toward robust quantum communication networks. Wed, 30 Aug 2023 13:19:37 EDT //www.koonmotors.com/releases/2023/08/230830131937.htm //www.koonmotors.com/releases/2023/08/230824150751.htm A new approach to quantum light emitters generates a stream of circularly polarized single photons, or particles of light, that may be useful for a range of quantum information and communication applications. A team stacked two different, atomically thin materials to realize this chiral quantum light source. Thu, 24 Aug 2023 15:07:51 EDT //www.koonmotors.com/releases/2023/08/230824150751.htm //www.koonmotors.com/releases/2023/08/230822111711.htm 'Trimming' the edge-states of a topological insulator yields a new class of material featuring unconventional 'two way' edge transport in a new theoretical study. The new material, a topological crystalline insulator (TCI) forms a promising addition to the family of topological materials and significantly broadens the scope of materials with topologically nontrivial properties, paving the way for novel techniques to manipulate edge transport in future electronics. For example, 'switching' the TCI via an electric field breaking the symmetry supporting the nontrivial band topology, thus suppressing the edge current. Tue, 22 Aug 2023 11:17:11 EDT //www.koonmotors.com/releases/2023/08/230822111711.htm //www.koonmotors.com/releases/2023/08/230816114142.htm Research is underway around the world to find alternatives to our current electronic computing technology, as great, electron-based systems have limitations. A new way of transmitting information is emerging from the field of magnonics: instead of electron exchange, the waves generated in magnetic media could be used for transmission, but magnonics-based computing has been (too) slow to date. Scientists have now discovered a significant new method: When the intensity is increased, the spin waves become shorter and faster -- another step towards magnon computing. Wed, 16 Aug 2023 11:41:42 EDT //www.koonmotors.com/releases/2023/08/230816114142.htm //www.koonmotors.com/releases/2023/08/230816114057.htm Researchers have found a way to control the interaction of light and quantum 'spin' in organic semiconductors, that works even at room temperature. Wed, 16 Aug 2023 11:40:57 EDT //www.koonmotors.com/releases/2023/08/230816114057.htm //www.koonmotors.com/releases/2023/08/230810110406.htm Random telegraph noise (RTN) in semiconductors is typically caused by two-state defects. Two-dimensional (2D) van der Waals (vdW) layered magnetic materials are expected to exhibit large fluctuations due to long-range Coulomb interaction; importantly, which could be controlled by a voltage compared to 3D counterparts having large charge screening. Researchers reported electrically tunable magnetic fluctuations and RTN signal in multilayered vanadium-doped tungsten diselenide (WSe2) by using vertical magnetic tunneling junction devices. They identified bistable magnetic states in the 1/f2 RTNs in noise spectroscopy, which can be further utilized for switching devices via voltage polarity. Thu, 10 Aug 2023 11:04:06 EDT //www.koonmotors.com/releases/2023/08/230810110406.htm //www.koonmotors.com/releases/2023/08/230807121942.htm Researchers have unveiled new information about the anomalous dynamics at play when an electric current is applied to a new class of magnetic materials called non-collinear antiferromagnets. Mon, 07 Aug 2023 12:19:42 EDT //www.koonmotors.com/releases/2023/08/230807121942.htm //www.koonmotors.com/releases/2023/08/230803112955.htm Researchers found a way to tune the spin density in diamond by applying an external laser or microwave beam. The finding could open new possibilities for advanced quantum devices. Thu, 03 Aug 2023 11:29:55 EDT //www.koonmotors.com/releases/2023/08/230803112955.htm //www.koonmotors.com/releases/2023/08/230802162512.htm In a potential boon for quantum computing, physicists have shown that topologically protected quantum states can be entangled with other, highly manipulable quantum states in some electronic materials. Wed, 02 Aug 2023 16:25:12 EDT //www.koonmotors.com/releases/2023/08/230802162512.htm //www.koonmotors.com/releases/2023/08/230802131950.htm 一个研究小组报告的机械反应across a layered magnetic material tied to changing its electron spin. This response could have important applications in nanodevices requiring ultra-precise and fast motion control. Wed, 02 Aug 2023 13:19:50 EDT //www.koonmotors.com/releases/2023/08/230802131950.htm //www.koonmotors.com/releases/2023/07/230731151550.htm Researchers have discovered that nuclear spin influences biological processes, challenging long-held beliefs. They found that certain isotopes behave differently in chiral environments, affecting oxygen dynamics and transport. This breakthrough could advance biotechnology, quantum biology, and NMR technology, with potential applications in isotope separation and medical imaging. Mon, 31 Jul 2023 15:15:50 EDT //www.koonmotors.com/releases/2023/07/230731151550.htm //www.koonmotors.com/releases/2023/07/230719150021.htm Scientists have demonstrated experimentally a long-theorized relationship between electron and nuclear motion in molecules, which could lead to the design of materials for solar cells, electronic displays and other applications that can make use of this powerful quantum phenomenon. Wed, 19 Jul 2023 15:00:21 EDT //www.koonmotors.com/releases/2023/07/230719150021.htm //www.koonmotors.com/releases/2023/07/230710133051.htm A team conducted an in-depth investigation of the magnetism of TbMn6Sn6, a Kagome layered topological magnet. They were surprised to find that the magnetic spin reorientation in TbMn6Sn6 occurs by generating increasing numbers of magnetically isotropic ions as the temperature increases. Mon, 10 Jul 2023 13:30:51 EDT //www.koonmotors.com/releases/2023/07/230710133051.htm //www.koonmotors.com/releases/2023/06/230621164645.htm Quantum researchers twist double bilayers of an antiferromagnet to demonstrate tunable moiré magnetism. Wed, 21 Jun 2023 16:46:45 EDT //www.koonmotors.com/releases/2023/06/230621164645.htm //www.koonmotors.com/releases/2023/06/230614220626.htm A team of physicists recently announced that they have discovered a new phase of matter. Called the 'chiral bose-liquid state,' the discovery opens a new path in the age-old effort to understand the nature of the physical world. Wed, 14 Jun 2023 22:06:26 EDT //www.koonmotors.com/releases/2023/06/230614220626.htm //www.koonmotors.com/releases/2023/06/230609125659.htm With the need for hardware to process large amounts of digital information ever growing, researchers are working hard to improve magnetoresistive devices. The magnetoresistance ratio indicates the efficiency of these devices, the higher the better. Most magnetoresistive devices comprise magnesium oxide and iron-based magnetic alloys. But a group of researchers has unveiled a new material that also exhibits enormous magnetoresistance. Fri, 09 Jun 2023 12:56:59 EDT //www.koonmotors.com/releases/2023/06/230609125659.htm //www.koonmotors.com/releases/2023/05/230511164524.htm In the study, a team of researchers describe what they believe to be the first measurement showing direct interaction between electrons spinning in a 2D material and photons coming from microwave radiation. Thu, 11 May 2023 16:45:24 EDT //www.koonmotors.com/releases/2023/05/230511164524.htm //www.koonmotors.com/releases/2023/05/230508104927.htm Quantum dots in semiconductors such as silicon or gallium arsenide have long been considered hot candidates for hosting quantum bits in future quantum processors. Scientists have now shown that bilayer graphene has even more to offer here than other materials. The double quantum dots they have created are characterized by a nearly perfect electron-hole-symmetry that allows a robust read-out mechanism -- one of the necessary criteria for quantum computing. Mon, 08 May 2023 10:49:27 EDT //www.koonmotors.com/releases/2023/05/230508104927.htm //www.koonmotors.com/releases/2023/05/230504154031.htm An international team of researchers has developed a comprehensive manual for engineering spin dynamics in nanomagnets -- an important step toward advancing spintronic and quantum-information technologies. Thu, 04 May 2023 15:40:31 EDT //www.koonmotors.com/releases/2023/05/230504154031.htm //www.koonmotors.com/releases/2023/04/230418195439.htm Perturbing electron spins in a magnet usually results in excitations called 'spin waves' that ripple through the magnet like waves moving across the surface of a pond that's been struck by a pebble. Physicists have now discovered dramatically different excitations called 'spin excitons' that can also 'ripple' through a nickel-based magnet as a coherent wave. Tue, 18 Apr 2023 19:54:39 EDT //www.koonmotors.com/releases/2023/04/230418195439.htm //www.koonmotors.com/releases/2023/04/230413154411.htm The flow of matter, from macroscopic water currents to the microscopic flow of electric charge, underpins much of the infrastructure of modern times. In the search for breakthroughs in energy efficiency, data storage capacity, and processing speed, scientists search for ways in which to control the flow of quantum aspects of matter such as the 'spin' of an electron -- its magnetic moment -- or its 'valley state', a novel quantum aspect of matter found in many two dimensional materials. A team of researchers has recently discovered a route to induce and control the flow of spin and valley currents at ultrafast times with specially designed laser pulses, offering a new perspective on the ongoing search for the next generation of information technologies. Thu, 13 Apr 2023 15:44:11 EDT //www.koonmotors.com/releases/2023/04/230413154411.htm //www.koonmotors.com/releases/2023/04/230412131130.htm Researchers report record-high magnetoresistance that appears in graphene under ambient conditions. Wed, 12 Apr 2023 13:11:30 EDT //www.koonmotors.com/releases/2023/04/230412131130.htm //www.koonmotors.com/releases/2023/04/230404161711.htm An international group of researchers has created a mixed magnon state in an organic hybrid perovskite material by utilizing the Dzyaloshinskii--Moriya-Interaction (DMI). The resulting material has potential for processing and storing quantum computing information. Tue, 04 Apr 2023 16:17:11 EDT //www.koonmotors.com/releases/2023/04/230404161711.htm //www.koonmotors.com/releases/2023/03/230329091949.htm Thanks to a breakthrough in the field of magnonics, researchers have sent and stored data using charge-free magnetic waves, rather than traditional electron flows. The discovery could solve the dilemma of energy-hungry computing technology in the age of big data. Wed, 29 Mar 2023 09:19:49 EDT //www.koonmotors.com/releases/2023/03/230329091949.htm //www.koonmotors.com/releases/2023/03/230322140331.htm A model system created by stacking a pair of monolayer semiconductors is giving physicists a simpler way to study confounding quantum behavior, from heavy fermions to exotic quantum phase transitions. Wed, 22 Mar 2023 14:03:31 EDT //www.koonmotors.com/releases/2023/03/230322140331.htm //www.koonmotors.com/releases/2023/03/230317145102.htm Research using a quantum computer as the physical platform for quantum experiments has found a way to design and characterize tailor-made magnetic objects using quantum bits, or qubits. That opens up a new approach to develop new materials and robust quantum computing. Fri, 17 Mar 2023 14:51:02 EDT //www.koonmotors.com/releases/2023/03/230317145102.htm //www.koonmotors.com/releases/2023/03/230306143325.htm Scientists develop method for chemically modifying nanoscale tubes of carbon atoms, so they can host spinning electrons to serve as stable quantum bits in quantum technologies. Mon, 06 Mar 2023 14:33:25 EST //www.koonmotors.com/releases/2023/03/230306143325.htm //www.koonmotors.com/releases/2023/02/230215143644.htm Researchers propose a new approach to making qubits, the basic units in quantum computing, and controlling them to read and write data. The method is based on measuring and controlling the spins of atomic nuclei, using beams of light from two lasers of slightly different colors. Wed, 15 Feb 2023 14:36:44 EST //www.koonmotors.com/releases/2023/02/230215143644.htm //www.koonmotors.com/releases/2023/02/230213134700.htm Researchers chiral phonons to convert wasted heat into spin information -- without needing magnetic materials. The finding could lead to new classes of less expensive, energy-efficient spintronic devices for use in applications ranging from computational memory to power grids. Mon, 13 Feb 2023 13:47:00 EST //www.koonmotors.com/releases/2023/02/230213134700.htm //www.koonmotors.com/releases/2023/02/230201134227.htm In the search for new forces and interactions beyond the Standard Model, an international team of researchers has now taken a good step forward. The researchers are using an amplification technique based on nuclear magnetic resonance. They use their experimental setup to study a particular exotic interaction between spins: a parity-violating interaction mediated by a new hypothetical exchange particle, called a Z' boson, which exists in addition to the Z boson mediating the weak interaction in the standard Model. Wed, 01 Feb 2023 13:42:27 EST //www.koonmotors.com/releases/2023/02/230201134227.htm //www.koonmotors.com/releases/2023/01/230131101902.htm An international research team has developed a new method for the efficient coupling of terahertz waves with much shorter wavelengths, so-called spin waves. Their experiments, in combination with theoretical models, clarify the fundamental mechanisms of this process previously thought impossible. The results are an important step for the development of novel, energy-saving spin-based technologies for data processing. Tue, 31 Jan 2023 10:19:02 EST //www.koonmotors.com/releases/2023/01/230131101902.htm //www.koonmotors.com/releases/2023/01/230130144803.htm Researchers have developed a new method for manipulating information in quantum systems by controlling the spin of electrons in silicon quantum dots. The results provide a promising new mechanism for control of qubits, which could pave the way for the development of a practical, silicon-based quantum computer. Mon, 30 Jan 2023 14:48:03 EST //www.koonmotors.com/releases/2023/01/230130144803.htm //www.koonmotors.com/releases/2023/01/230127131213.htm In the global push for practical quantum networks and quantum computers, an international team of researchers has demonstrated a leap in preserving the quantum coherence of quantum dot spin qubits. Fri, 27 Jan 2023 13:12:13 EST //www.koonmotors.com/releases/2023/01/230127131213.htm //www.koonmotors.com/releases/2023/01/230124101547.htm A research group has succeeded in measuring spin transport in a thin film of specific molecules -- a material well-known in organic light emitting diodes -- at room temperature. They found that this thin molecular film has a spin diffusion length of approximately 62 nm, a length that could have practical applications in developing spintronics technology. In addition, while electricity has been used to control spin transport in the past, the thin molecular film used in this study is photoconductive, allowing spin transport control using visible light. Tue, 24 Jan 2023 10:15:47 EST //www.koonmotors.com/releases/2023/01/230124101547.htm //www.koonmotors.com/releases/2022/12/221221154653.htm Researchers developed a new graphene-based nanoelectronics platform compatible with conventional microelectronics manufacturing, paving the way for a successor to silicon. Wed, 21 Dec 2022 15:46:53 EST //www.koonmotors.com/releases/2022/12/221221154653.htm //www.koonmotors.com/releases/2022/12/221215161553.htm 研究人员已经发现了一个完全的新类型of fractal appearing in a class of magnets called spin ices. The discovery was surprising because the fractals were seen in a clean three-dimensional crystal, where they conventionally would not be expected. Even more remarkably, the fractals are visible in dynamical properties of the crystal, and hidden in static ones. These features motivated the appellation of 'emergent dynamical fractal'. Thu, 15 Dec 2022 16:15:53 EST //www.koonmotors.com/releases/2022/12/221215161553.htm //www.koonmotors.com/releases/2022/12/221206135333.htm Physicists have developed a completely new class of materials for transporting spin waves: antiferromagnets with tilted magnetic moments. Tue, 06 Dec 2022 13:53:33 EST //www.koonmotors.com/releases/2022/12/221206135333.htm //www.koonmotors.com/releases/2022/11/221123113221.htm Physicists have experimentally demonstrated for the first time that there is a negative correlation between the two spins of an entangled pair of electrons from a superconductor. For their study, the researchers used spin filters made of nanomagnets and quantum dots. Wed, 23 Nov 2022 11:32:21 EST //www.koonmotors.com/releases/2022/11/221123113221.htm //www.koonmotors.com/releases/2022/11/221111103047.htm The transformation between skyrmions and bimerons has now been realized by scientists. Fri, 11 Nov 2022 10:30:47 EST //www.koonmotors.com/releases/2022/11/221111103047.htm //www.koonmotors.com/releases/2022/11/221103120036.htm The challenge of fabricating nanowires directly on silicon substrates for the creation of the next generation of electronics has finally been solved. Next generation spintronics will lead to better memory storage mechanisms in computers, making them faster and more efficient. Thu, 03 Nov 2022 12:00:36 EDT //www.koonmotors.com/releases/2022/11/221103120036.htm //www.koonmotors.com/releases/2022/10/221027124014.htm Researchers have found that a novel metallic crystal displays unusual electronic behavior on its surface, thanks to the crystal's unique atomic structure. Their findings open up the possibility of using this material to develop faster and smaller microelectronic devices. Thu, 27 Oct 2022 12:40:14 EDT //www.koonmotors.com/releases/2022/10/221027124014.htm //www.koonmotors.com/releases/2022/10/221027123929.htm 一种新的方式来结合两种材料和特殊的electrical properties -- a monolayer superconductor and a topological insulator -- provides the best platform to date to explore an unusual form of superconductivity called topological superconductivity. The combination could provide the basis for topological quantum computers that are more stable than their traditional counterparts. Thu, 27 Oct 2022 12:39:29 EDT //www.koonmotors.com/releases/2022/10/221027123929.htm //www.koonmotors.com/releases/2022/10/221025120127.htm 科学家们创造了玻色-爱因斯坦凝聚态out of excitons -- quasiparticles that combine electrons and positively charged 'holes' -- in a semiconductor. Quasiparticle Bose-Einstein condensates have for six decades been something of a holy grail of low-temperature physics. Tue, 25 Oct 2022 12:01:27 EDT //www.koonmotors.com/releases/2022/10/221025120127.htm //www.koonmotors.com/releases/2022/10/221003164509.htm Neutron scattering is considered the method of choice for investigating magnetic structures and excitations in quantum materials. Now, for the first time, the evaluation of measurement data from the 2000s with new methods has provided much deeper insights into a model system -- the 1D Heisenberg spin chains. A new toolbox is available for elucidating future quantum materials has been achieved. Mon, 03 Oct 2022 16:45:09 EDT //www.koonmotors.com/releases/2022/10/221003164509.htm //www.koonmotors.com/releases/2022/09/220929203718.htm Engineers have substantially extended the time that their quantum computing processors can hold information by more than 100 times compared to previous results. Thu, 29 Sep 2022 20:37:18 EDT //www.koonmotors.com/releases/2022/09/220929203718.htm //www.koonmotors.com/releases/2022/09/220929133448.htm Researchers have engineered a record number of six, silicon-based, spin qubits in a fully interoperable array. Importantly, the qubits can be operated with a low error-rate that is achieved with a new chip design, an automated calibration procedure, and new methods for qubit initialization and readout. These advances will contribute to a scalable quantum computer based on silicon. Thu, 29 Sep 2022 13:34:48 EDT //www.koonmotors.com/releases/2022/09/220929133448.htm //www.koonmotors.com/releases/2022/09/220922124427.htm Quantum researchers have demonstrated a method for encoding vastly more information into a single photon, opening the door to even faster and more powerful quantum communication tools. Thu, 22 Sep 2022 12:44:27 EDT //www.koonmotors.com/releases/2022/09/220922124427.htm //www.koonmotors.com/releases/2022/09/220922103140.htm Millions of quantum bits are required for quantum computers to prove useful in practical applications. But this is still a long way off. One problem is that the qubits have to be very close to each other on the chip. Researchers have now come a significant step closer to solving the problem. They succeeded in transferring electrons over several micrometers on a quantum chip. Thu, 22 Sep 2022 10:31:40 EDT //www.koonmotors.com/releases/2022/09/220922103140.htm //www.koonmotors.com/releases/2022/09/220915104728.htm Strong alternating magnetic fields can be used to generate a new type of spin wave that was previously just theoretically predicted. This was achieved by a team of physicists. Thu, 15 Sep 2022 10:47:28 EDT //www.koonmotors.com/releases/2022/09/220915104728.htm //www.koonmotors.com/releases/2022/09/220912100326.htm Researchers proposed a scenario of a light-induced topological phase called a Floquet-Weyl semimetal. They find that the motion of the electrons when excited by a laser allows a spin-polarized surface state to be generated. This work may lead to optical control of topological states of condensed matter. Mon, 12 Sep 2022 10:03:26 EDT //www.koonmotors.com/releases/2022/09/220912100326.htm //www.koonmotors.com/releases/2022/09/220912100323.htm Researchers demonstrated a topological insulator device that opens the way towards observing the quantum anomalous Hall effect. Because the currents generated are resistant to scattering, but very sensitive to applied magnetic fields, they may be used for reducing power consumption in computing applications. 星期一,2022年9月12日10:03:23美国东部时间 //www.koonmotors.com/releases/2022/09/220912100323.htm //www.koonmotors.com/releases/2022/09/220907192611.htm Research shows that spinning quasiparticles, or magnons, light up when paired with a light-emitting quasiparticle, or exciton, with potential quantum information applications. Wed, 07 Sep 2022 19:26:11 EDT //www.koonmotors.com/releases/2022/09/220907192611.htm //www.koonmotors.com/releases/2022/09/220906161456.htm Physicists have demonstrated a new magnetized state in a monolayer of tungsten ditelluride. This material of one-atom thickness has an insulating interior but a conducting edge, which has important implications for controlling electron flow in nanodevices. Tue, 06 Sep 2022 16:14:56 EDT //www.koonmotors.com/releases/2022/09/220906161456.htm //www.koonmotors.com/releases/2022/09/220902131146.htm A general formula that can calculate the spin current induced by oscillating magnetic fields in magnetic materials and aid our understanding of novel spintronics functionality has been developed. The formula predicts large spin currents arising from a hitherto unknown contribution in antiferromagnetic chromium trihalides, opening doors to material design for novel spintronics devices. Fri, 02 Sep 2022 13:11:46 EDT //www.koonmotors.com/releases/2022/09/220902131146.htm //www.koonmotors.com/releases/2022/08/220829112821.htm Scientists have developed a mathematical description of what happens within tiny magnets as they fluctuate between states when an electric current and magnetic field are applied. Their findings could act as the foundation for engineering more advanced computers that can quantify uncertainty while interpreting complex data. Mon, 29 Aug 2022 11:28:21 EDT //www.koonmotors.com/releases/2022/08/220829112821.htm //www.koonmotors.com/releases/2022/08/220825094826.htm Topological insulators are regarded as the key to novel 'spintronic' devices and quantum computers of the future due to their unique electronic properties. Physicists have now been able to understand for the first time how the topological properties of multilayer systems of Tungsten di-telluride can be changed systematically by means of scanning tunneling microscopy. The chemical compound has recently proven to be a promising material for the realization of topological states. Thu, 25 Aug 2022 09:48:26 EDT //www.koonmotors.com/releases/2022/08/220825094826.htm //www.koonmotors.com/releases/2022/08/220823162747.htm A research team has demonstrated efficient spin transport in an antiferromagnet/ferromagnet hybrid that remains robust up to room temperature. Tue, 23 Aug 2022 16:27:47 EDT //www.koonmotors.com/releases/2022/08/220823162747.htm //www.koonmotors.com/releases/2022/08/220818122348.htm When some materials are cooled to a certain temperature, they lose electric resistance, becoming superconductors. Thu, 18 Aug 2022 12:23:48 EDT //www.koonmotors.com/releases/2022/08/220818122348.htm //www.koonmotors.com/releases/2022/08/220818122326.htm An advance in the use of antiferromagnetic materials in memory storage devices has been made by an international team of physicists. Thu, 18 Aug 2022 12:23:26 EDT //www.koonmotors.com/releases/2022/08/220818122326.htm