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All-electrical control of spin transport in nanostructures has been the central interest and chal- lenge of spin physics and spintronics. Here we demonstrate on-chip spin polarizing/filtering actions by driving the gate-defined one…

介观与纳米尺度物理 · 物理学 2012-11-13 T. -M. Chen , M. Pepper , I. Farrer , G. A. C. Jones , D. A. Ritchie

Electrical manipulation of spin-polarized current is highly desirable yet tremendously challenging in developing ultracompact spintronic device technology. Here we propose a scheme to realize the all-electrical manipulation of…

介观与纳米尺度物理 · 物理学 2024-09-19 Rui Peng , Jin Yang , Lin Hu , Wee-Liat Ong , Pin Ho , Chit Siong Lau , Junwei Liu , Yee Sin Ang

Spin injection and detection in silicon is a difficult problem, in part because the weak spin-orbit coupling and indirect gap preclude using standard optical techniques. We propose two ways to overcome this difficulty, and illustrate their…

其他凝聚态物理 · 物理学 2015-06-24 Igor Zutic , Jaroslav Fabian , Steven C. Erwin

Well-controlled sub-unit-cell layer-by-layer epitaxial growth of spinel alumina is achieved at room temperature on the TiO2-terminated SrTiO3 single crystalline substrate. By tailoring the interface redox reaction, two-dimensional electron…

材料科学 · 物理学 2013-12-16 Y. Z. Chen , N. Bovet , T. Kasama , W. W. Gao , S. Yazdi , C. Ma , N. Pryds , S. Linderoth

Controlling polarisation directly at low temperature is crucial for development of optical spectroscopy techniques at sub-Kelvin temperatures, for example, in a hybrid scheme where light is fed into and collected in the cryostat by fibres…

光学 · 物理学 2025-01-07 Thierry Chanelière , Alexei D. Chepelianskii

Topological insulators are candidates to open up a novel route in spin based electronics. Different to traditional ferromagnetic materials, where the carrier spin-polarization and magnetization are based on the exchange interaction, the…

Majority of the A$_2$B$_3$ type chalcogenide systems with strong spin-orbit coupling, like Bi$_2$Se$_3$, Bi$_2$Te$_3$ and Sb$_2$Te$_3$ etc., are topological insulators. One important exception is Sb$_2$Se$_3$, where a topological…

介观与纳米尺度物理 · 物理学 2018-06-13 Shekhar Das , Suman Kamboj , Anshu Sirohi , Aastha Vasdev , Sirshendu Gayen , Prasenjit Guptasarma , Goutam Sheet

Magnetic and spin-based technologies for data storage and processing pose unique challenges for information transduction to light because of magnetic metals' optical loss, and the inefficiency and resistivity of semiconductor spin-based…

介观与纳米尺度物理 · 物理学 2014-07-24 Ferran Macià , Fujian Wang , Nicholas J. Harmon , Andrew D. Kent , Markus Wohlgenannt , Michael E. Flatté

Strongly interacting spins underlie many intriguing phenomena and applications ranging from magnetism to quantum information processing. Interacting spins combined with motion display exotic spin transport phenomena, such as superfluidity…

Spin-based electronics in topological insulators (TIs) is favored by the long spin coherence1,2 and consequently fault-tolerant information storage. Magnetically doped TIs are ferromagnetic up to 13 K,3 well below any practical operating…

By combining optical spin injection techniques with transport spectroscopy tools, we demonstrate a spin-photodetector allowing for the electrical measurement and active filtering of conduction band electron spin at room temperature in a…

其他凝聚态物理 · 物理学 2010-03-01 F. Zhao , A. Balocchi , A. Kunold , J. Carrey , H. Carrère , T. Amand , N. Ben Abdallah , J. C. Harmand , X. Marie

We study spintronics and spincaloritronics in topological insulators. We show spintronics effects in 2D topological insulator junctions and 3D topological insulators coupled to ferromagnets. We also investigate spin polarization on the…

介观与纳米尺度物理 · 物理学 2015-06-12 Takehito Yokoyama , Shuichi Murakami

With nearly complete spin polarization, the ferromagnetic semiconductor europium monoxide could enable next-generation spintronic devices by providing efficient ohmic spin injection into silicon. Spin injection is greatly affected by the…

We inject spin-polarized electrons from an Fe/MgO tunnel barrier contact into n-type Ge(001) substrates with electron densities 2e16 < n < 8e17 cm-3, and electrically detect the resulting spin accumulation using three-terminal Hanle…

材料科学 · 物理学 2012-02-20 A. T. Hanbicki , S. -. F. Cheng , R. Goswami , O. M. J. van `t Erve , B. T. Jonker

The discovery of stable room temperature ferroelectricity in Croconic Acid, an organic ferroelectric material, with polarization values on par with those found in inorganic ferroelectric materials and highest among organic ferroelectric…

Transition-metal phthalocyanine molecules have attracted considerable interest in the context of spintronics device development due to their amenability to diverse bonding regimes and their intrinsic magnetism. The latter is highly…

强关联电子 · 物理学 2024-12-19 Sumanta Bhandary , Emiliano Poli , Gilberto Teobaldi , David D. O'Regan

We propose an experiment-based strategy for finding new high transition temperature superconductors that is based on the well-established spin fluctuation magnetic gateway to superconductivity in which the attractive quasiparticle…

超导电性 · 物理学 2013-11-19 David Pines

When a charge current is applied to a junction comprising two different conductors, its temperature increases or decreases depending on the direction of the charge current. This phenomenon is called the Peltier effect, which is used in…

介观与纳米尺度物理 · 物理学 2016-12-30 Shunsuke Daimon , Ryo Iguchi , Tomosato Hioki , Eiji Saitoh , Ken-ichi Uchida

Controlling the momentum of carriers in semiconductors, known as valley polarization, is a new resource for optoelectronics and information technologies. Materials exhibiting high polarization are needed for valley-based devices. Few-layer…

介观与纳米尺度物理 · 物理学 2022-12-14 Rasmus H. Godiksen , Shaojun Wang , T. V. Raziman , Jaime Gómez Rivas , Alberto G. Curto

The magnetic tetrapyrrole molecules (such as porphyrins and phthalocyanines) with an active transition metal atom in their centre are currently intensively studied as prosperous potential elements of devices for high-density information…

材料科学 · 物理学 2022-10-06 Aleksei Koshevarnikov , Tomi Ketolainen , Jacek A. Majewski