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We consider a single electron confined within a quantum wire in a system of two electrostatically-induced QDs defined by nearby gates. The time-varying electric field, of single GHz frequency, perpendicular to the quantum wire, is used to…

Mesoscale and Nanoscale Physics · Physics 2021-07-19 J. Pawłowski , G. Skowron , P. Szumniak , S. Bednarek

We report a giant Rashba-type spin splitting in two-dimensional heterostructure PtSe$_2$/MoSe$_2$ with first-principles calculations. We obtain a large value of spin splitting energy 110 meV at the momentum offset $k_0$=0.23 \AA$^{-1}$…

Materials Science · Physics 2020-01-08 Longjun Xiang , Youqi Ke , Qingyun Zhang

The search for strongly inversion asymmetric topological insulators is an active research field because these materials possess distinct properties compared with the inversion symmetric ones. In particular, it is desirable to realize a…

Materials Science · Physics 2014-01-28 Jin-Jian Zhou , Wanxiang Feng , Ying Zhang , Shengyuan A. Yang , Yugui Yao

We report a Rashba spin splitting of a two-dimensional electron gas in the topological insulator Bi$_2$Se$_3$ from angle-resolved photoemission spectroscopy. We further demonstrate its electrostatic control, and show that spin splittings…

Two-dimensional (2D) superconductors that reside on substrates must be influenced by Rashba spin-orbit coupling (SOC). The intriguing effect of Rashba-type SOCs on iron-based superconductors (IBSs) has remained largely a mystery. In this…

We investigate theoretically the efficiency of the Rashba effect, i.e. the spin splitting resulting from an electric field. This is the mechanism behind the Datta-Das spin transistor. In the research efforts so far the carriers have usually…

Other Condensed Matter · Physics 2009-11-11 D. M. Gvozdic , U. Ekenberg

We present a comprehensive investigation into the atomic and electronic structures of a single-layer Sb(110) rhombohedral crystal formed on an Au(111) substrate. Low-energy electron diffraction (LEED) and scanning tunneling microscopy (STM)…

Materials Science · Physics 2024-07-01 Jinbang Hu , Lina Liu , Xiansi Wang , Yong P. Chen , Justin W Wells

Rashba precession of spins moving along a one-subband quantum channel is calculated. The quantitative influence of unoccupied higher subbands depends on the shape of the transversal confinement and can be accounted for perturbatively.…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Wolfgang Häusler

It is widely believed that Rasba spin splitting occurs only in systems lacking space inversion invariance. In this letter we present analytical analysis which suggests that non-zero Rashba spin splitting occurs in systems possessing space…

Mesoscale and Nanoscale Physics · Physics 2014-06-13 Tihomir G. Tenev

Magnetism-driven nonrelativistic spin splittings (NRSS) are promising for highly efficient spintronics applications. Although 2D centrosymmetric (in four-dimensional spacetime) antiferromagnets are abundant, they have not received extensive…

Materials Science · Physics 2024-04-02 Sajjan Sheoran , Saswata Bhattacharya

Two-dimensional materials with Rashba split bands near the Fermi level are key to developing upcoming next-generation spintronics. They enable generating, detecting, and manipulating spin currents without an external magnetic field. Here,…

Materials Science · Physics 2023-10-19 Muhammad Zubair , Igor Evangelista , Shoaib Khalid , Bharat Medasani , Anderson Janotti

Rashba and linear Dresselhaus interactions are believed to yield dominant contribution to the spin splitting of two-dimensional electrons in the quantum wells based on A$_3$B$_5$ compounds. We show that the interfacial spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2018-03-12 Zh. A. Devizorova , V. A. Volkov

We study the effect of splitting and zitterbewegung of 1D and 2D electron wave packets in the semiconductor quantum well under the influence of the Rashba spin orbit coupling. Results of our investigations show that the spin orbit…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 V. Ya. Demikhovskii , G. M. Maksimova , E. V. Frolova

The effective linear coupling coefficient and the total spin-splitting are calculated in Ga- and N- face InGaN quantum wells. Alloy content, geometry, and gate voltage affect an internal field and an electron density distribution in the…

Materials Science · Physics 2009-11-11 V. I. Litvinov

Topological flat band, on which the kinetic energy of topological electrons is quenched, represents a platform for investigating the topological properties of correlated systems. Recent experimental studies on flattened electronic bands…

Mesoscale and Nanoscale Physics · Physics 2024-05-28 Dong Xing , Bingbing Tong , Senyang Pan , Zezhi Wang , Jianlin Luo , Jinglei Zhang , Cheng-Long Zhang

We study the electronic band structure of monolayer graphene when Rashba spin-orbit coupling is present. We show that if the Rashba spin-orbit coupling is stronger than the intrinsic spin-orbit coupling, the low energy bands undergo…

Mesoscale and Nanoscale Physics · Physics 2010-10-05 Peter Rakyta , Andor Kormanyos , Jozsef Cserti

Using scanning tunneling spectroscopy (STS) at 5 K in B-fields up to 7 T, we investigate the local density of states of a two-dimensional electron system (2DES) created by Cs adsorption on p-type InSb(110). The 2DES, which in contrast to…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 S. Becker , M. Liebmann , T. Mashoff , M. Pratzer , M. Morgenstern

Electronic states on the Bi/InAs(110)-(2$\times$1) surface and its spin-polarized structure are revealed by angle-resolved photoelectron spectroscopy (ARPES), spin-resolved ARPES, and density-functional-theory calculation. The surface state…

We report on the first experimental observation of spin noise in a single semiconductor quantum well embedded into a microcavity. The great cavity-enhanced sensitivity to fluctuations of optical anisotropy has allowed us to measure the Kerr…

We develop a microscopic theory of spin relaxation of a two-dimensional electron gas in quantum wells with anisotropic electron scattering. Both precessional and collision-dominated regimes of spin dynamics are studied. It is shown that, in…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 A. V. Poshakinskiy , S. A. Tarasenko
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