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相关论文: Spin susceptibility and polarization field in a di…

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The optical susceptibility is a local, minimally-invasive and spin-selective probe of the ground state of a two-dimensional electron gas. We apply this probe to a gated monolayer of MoS$_2$. We demonstrate that the electrons are spin…

We present a detailed analysis of the relativistic electronic structure and the momentum dependent spin-polarization of the Tl/Si(111) surface. Our first principle calculations reveal the existence of fully spin-polarized electron pockets…

材料科学 · 物理学 2013-07-01 Julen Ibañez-Azpiroz , Asier Eiguren , Aitor Bergara

Under an in-plane magnetic field, the density of states of quasi two-dimensional carriers deviates from the occasionally stereotypic step-like form both quantitatively and qualitatively. For the first time, we study how this affects the…

材料科学 · 物理学 2008-02-04 Constantinos Simserides

The results of scanning tunneling microscopy experiments using iron-coated tungsten tips and current-carrying bismuth selenide ($Bi_2Se_3$) samples are reported. Asymmetry in tunneling currents with respect to the change in the direction of…

介观与纳米尺度物理 · 物理学 2019-11-04 S. Tyagi , M. Dreyer , D. Bowen , D. Hinkel , P. J. Taylor , A. L. Friedman , R. E. Butera , C. Krafft , I. Mayergoyz

We report on an investigation of spin-polarized secondary electron emission from the chemically inert system: graphene/Ni(111). An ordered passivated graphene layer (monolayer of graphite, MG) was formed on Ni(111) surface via cracking of…

材料科学 · 物理学 2010-10-08 Yu. S. Dedkov , C. Laubschat

We show that an initially unpolarized electron flow acquires spin polarization after passing through a lateral barrier in two-dimensional (2D) system with spin-orbit interaction (SOI) even if the current is directed normally to the barrier.…

介观与纳米尺度物理 · 物理学 2009-02-26 Yurii Ya. Tkach , Vladimir A. Sablikov , Aleksei A. Sukhanov

We investigate the two-dimensional (2D) highly spin-polarized electron accumulation layers commonly appearing near the surface of n-type polar semiconductors BiTeX (X = I, Br, and Cl) by angular-resolved photoemission spectroscopy. Due to…

We investigate mesoscopic fluctuations in the spin polarization generated by a static electric field and by Rashba spin-orbit interaction in a disordered 2D electron gas. In a diagrammatic approach we find that the out-of-plane polarization…

介观与纳米尺度物理 · 物理学 2009-12-08 Mathias Duckheim , Daniel Loss

We present a method to create spin-polarized beams of ballistic electrons in a two-dimensional electron system in the presence of spin-orbit interaction. Scattering of a spin-unpolarized injected beam from a lithographic barrier leads to…

介观与纳米尺度物理 · 物理学 2007-05-23 Hong Chen , J. J. Heremans , J. A. Peters , J. P. Dulka , A. O. Govorov , N. Goel , S. J. Chung , M. B. Santos

The 2-D electron system (2DES) in Si metal-oxide field-effect transistors (MOSFETS) consists of two distinct electron fluids interacting with each other. We calculate the total energy as a function of the density $n$, and the spin…

强关联电子 · 物理学 2007-05-23 M. W. C. Dharma-wardana , François Perrot

In this work we have studied the parallel magnetoresistance of a 2DEG near a vicinal silicon surface. An unusual, linear magnetoconductance is observed in the fields up to $B = 15$ T, which we explain by the effect of spin olarization on…

介观与纳米尺度物理 · 物理学 2009-11-10 Y. Y. Proskuryakov , Z. D. Kvon , A. K. Savchenko

We study the renormalization of a single impurity potential in one-dimensional interacting electron systems in the presence of magnetic field. Using the bosonization technique and Bethe ansatz solutions, we determine the renormalization…

强关联电子 · 物理学 2007-05-23 T. Hikihara , A. Furusaki , K. A. Matveev

We report measurements of the spin susceptibility in dilute (rs up to 10) AlAs two-dimensional (2D) electrons occupying a single conduction-band valley with an anisotropic in-plane Fermi contour, characterized by longitudinal and transverse…

介观与纳米尺度物理 · 物理学 2009-11-13 T. Gokmen , Medini Padmanabhan , E. Tutuc , M. Shayegan , S. De Palo , S. Moroni , Gaetano Senatore

We report magnetic susceptibility performed on overdoped Bi2Sr2CuO6+d powders as a function of oxygen doping d and temperature T. The decrease of the spin susceptibility chis with increasing T is confirmed. At sufficient high temperature,…

We consider an oblate Bose-Einstein condensate of heteronuclear polar molecules in a weak applied electric field. This system supports a rich quasiparticle spectrum that plays a critical role in determining its bulk dielectric properties.…

量子气体 · 物理学 2015-06-18 Ryan M. Wilson , Brandon M. Peden , Charles W. Clark , Seth T. Rittenhouse

Spin states of two-dimensional Wigner clusters are considered at low temperatures, when all electrons are in ground coordinate states. The spin subsystem behavior is determined by antiferromagnetic exchange integrals. The spin states in…

介观与纳米尺度物理 · 物理学 2022-12-08 Mehrdad M. Mahmoodian , M. M. Mahmoodian , M. V. Entin

The magnitude of electron spin polarization in topologically protected surface states is an important parameter with respect to spintronics applications. In order to analyze the warped spin texture in Bi$_2$Te$_3$ thin films, we combine…

介观与纳米尺度物理 · 物理学 2012-10-09 A. Herdt , L. Plucinski , G. Bihlmayer , G. Mussler , S. Döring , J. Krumrain , D. Grützmacher , S. Blügel , C. M. Schneider

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

Density-functional calculations using an exact exchange potential for a two-dimensional electron gas (2DEG) formed in a GaAs single quantum well predict the existence of a spin-polarized phase, when an excited subband becomes slightly…

介观与纳米尺度物理 · 物理学 2009-11-10 A. R. Goñi , P. Giudici , F. A. Reboredo , C. R. Proetto , C. Thomsen , K. Eberl , M. Hauser

We study theoretically the disorder-induced smearing of the density of states in a two-dimensional electron system taking into account a spin-orbit term in the Hamiltonian of a free electron. We show that the characteristic energy scale for…

介观与纳米尺度物理 · 物理学 2009-10-30 A. G. Galstyan , M. E. Raikh