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相关论文: Density dependent spin polarisation in ultra low-d…

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Chirality-induced spin selectivity is a spin-splitting phenomenon from a helical structure with a considerably effective spin-orbit coupling. This unexpectedly large spin-splitting phenomenon has been experimentally observed in chiral…

强关联电子 · 物理学 2024-05-08 Meng Xu , Yan Chen

We derive the transport equations for two-dimensional electron systems with spin-orbit interaction and short-range spin-independent disorder. In the limit of slow spatial variations of the electron distribution we obtain coupled diffusion…

介观与纳米尺度物理 · 物理学 2007-05-23 E. G. Mishchenko , A. V. Shytov , B. I. Halperin

We report the observation of spin segregation, i.e., separation of spin density profiles, in a trapped ultracold Fermi gas of $^6$Li with a magnetically tunable scattering length close to zero. The roles of the spin components are inverted…

其他凝聚态物理 · 物理学 2009-11-13 X. Du , L. Luo , B. Clancy , J. E. Thomas

Possibility of electronic charge and spin separation leading to charge density wave and spin density wave is well established in one dimensional systems in presence and absence of Coulomb interaction. We start from quasi one dimension and…

介观与纳米尺度物理 · 物理学 2013-07-17 Urbashi Satpathi , Sumit Ghosh , A. K. Ray , P. Singha Deo

We present analysis of the interacting quantum wire problem in the presence of magnetic field and spin-orbit interaction. We show that an interesting interplay of Zeeman and spin-orbit terms, facilitated by the electron-electron…

强关联电子 · 物理学 2007-05-23 Jianmin Sun , Suhas Gangadharaiah , Oleg A. Starykh

Nonequilibrium electronic transport through a quantum dot coupled to ferromagnetic leads (electrodes) is studied theoretically by the nonequilibrium Green function technique. The system is described by the Anderson model with arbitrary…

介观与纳米尺度物理 · 物理学 2009-11-11 R. Swirkowicz , M. Wilczynski , J. Barnas

The theoretical possibility to use an electron microscope as a spin polarizer is studied. It turns out that a Bessel beam passing a standard magnetic objective lens is intrinsically spin polarized. In the limit of infinitely small detectors…

量子物理 · 物理学 2015-12-08 Peter Schattschneider , Vincenzo Grillo

We analyze the spin transport through a finite-size one-dimensional interacting wire connected to noninteracting leads. By combining renormalization-group arguments with other analytic considerations such as the memory function technique…

量子气体 · 物理学 2020-04-28 A. -M. Visuri , M. Lebrat , S. Häusler , L. Corman , T. Giamarchi

We investigate the density of states (DOS) near the Fermi energy of one-dimensional spin-polarized electron systems in the quantum regime where the localization length is comparable to or larger than the inter-particle distance. The Wigner…

凝聚态物理 · 物理学 2009-10-28 Gun Sang Jeon , M. Y. Choi , S. -R. Eric Yang

The magnetic field dependence of the spin-susceptibility, $\chi_{s}$ was measured in the superconducting state of high purity MgB$_{2}$ fine powders below 1.3 T. $\chi_{s}$ was determined from the intensity of the conduction electron spin…

超导电性 · 物理学 2012-10-23 F. Simon , A. Janossy , T. Feher , F. Muranyi , S. Garaj , L. Forro , C. Petrovic , S. Bud'ko , R. A. Ribeiro , P. C. Canfield

We show that in a quantum wire the spin-orbit interaction leads to a narrow spin resonance at low temperatures, even in the absence of an external magnetic field. A relatively weak dc magnetic field of a definite direction strongly…

强关联电子 · 物理学 2010-08-09 Ar. Abanov , V. L. Pokrovsky , W. M. Saslow , P. Zhou

Short dangling bond wires (DB wires), fabricated on H-terminated Si(001) surfaces, show patterns of displacement that depend on their length. We have performed density function calculations, with and without spin-polarisation, designed to…

材料科学 · 物理学 2009-11-10 C. F. Bird , D. R. Bowler

The spin accumulation in an n-GaAs channel produced by spin extraction into a (Ga,Mn)As contact is measured by cross-sectional imaging of the spin polarization in GaAs. The spin polarization is observed in a 1 \mum thick n-GaAs channel with…

We consider the relaxation of a spin qubit in a quantum dot propagating as a whole in a one-dimensional semiconductor with hyperfine coupling. We show that this motion leads to qualitatively new features in this process compared to static…

介观与纳米尺度物理 · 物理学 2015-06-15 C. Echeverria-Arrondo , E. Ya. Sherman

We argue that a pseudo-one-dimensional electron gas is magnetized when a voltage bias is applied with the Fermi level tuned to be in the energy gap generated by a spin-orbit interaction. The magnetization is an indication of spin-carrying…

介观与纳米尺度物理 · 物理学 2007-05-23 Naomichi Hatano , Ryoen Shirasaki , Hiroaki Nakamura

Spin-polarized two-dimensional materials with large and tunable spin-splitting energy promise the field of 2D spintronics. While graphene has been a canonical 2D material, its spin properties and tunability are limited. Here, we demonstrate…

We investigated the effect due to perpendicular magnetic field on quantum wires where spin-orbit interaction (SOI) of electrons is not neglected. Based on the calculated energy dispersion, the nonlinear ballistic conductance ($G$) and…

介观与纳米尺度物理 · 物理学 2015-05-30 Godfrey Gumbs , Antonios Balassis , Danhong Huang , Sheehan Ahmed , Ryan Brennan

The main source of decoherence for an electron spin confined to a quantum dot is the hyperfine interaction with nuclear spins. To analyze this process theoretically we diagonalize the central spin Hamiltonian in the high magnetic B-field…

介观与纳米尺度物理 · 物理学 2015-05-27 Oleksandr Tsyplyatyev , Daniel Loss

We investigate a one--dimensional wire of interacting electrons connected to one--dimensional noninteracting leads in the absence and in the presence of a backscattering potential. The ballistic wire separates the charge and spin parts of…

强关联电子 · 物理学 2009-10-31 Inès Safi , H. J. Schulz

One-dimensional quantum wires are considered as prospective elements for spin transport and manipulation in spintronics. We study spin dynamics in semiconductor GaAs-like nanowires with disorder and spin-orbit interaction by using a…

介观与纳米尺度物理 · 物理学 2015-06-04 Carlos Echeverría-Arrondo , E. Ya. Sherman