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Spin-spin correlation function response in the low electronic density regime and externally applied electric field is evaluated for 2D metallic crystals under Rashba-type coupling, fixed number of particles and two-fold energy band…

Strongly Correlated Electrons · Physics 2017-10-06 H. Vivas

Strong spin-orbit coupling can have a profound effect on the electronic structure in a metal or semiconductor, particularly for low electron concentrations. We show how, for small values of the Fermi energy compared to the spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 E. Cappelluti , C. Grimaldi , F. Marsiglio

We study how the Rashba spin-orbit interaction influences unconventional superconductivity in a two dimensional electron gas partially spin-polarized by a magnetic field. Somewhat surprisingly, we find that for all field orientations, only…

Superconductivity · Physics 2016-07-01 Ethan Lake , Caleb Webb , D. A. Pesin , O. A. Starykh

We study the interaction corrections to the transport coefficients in open quantum dots (i.e. dots connected to leads of large conductance $G \gg e^2/\pi\hbar$), via a quantum kinetic equation approach. The effects of all the channels of…

Mesoscale and Nanoscale Physics · Physics 2008-09-25 Y. Ahmadian , G. Catelani , I. L. Aleiner

We study thermal conductivity in the disordered two-dimensional electron liquid in the presence of long-range Coulomb interactions. We describe a microscopic analysis of the problem using as a starting point the partition function defined…

Mesoscale and Nanoscale Physics · Physics 2016-06-22 G. Schwiete , A. M. Finkel'stein

We present semiclassical and quantum mechanical results for the effects of a strong magnetic field in Quantum Wires in the presence of Rashba Spin Orbit coupling. Analytical and numerical results show how the perturbation acts in the…

Mesoscale and Nanoscale Physics · Physics 2016-08-31 S. Bellucci , P. Onorato

The two-dimensional electron system in (110)Al$_2$O$_{3-\delta}$/SrTiO$_3$ heterostructures displays anisotropic electronic transport. Largest and lowest conductivity and electron mobility $\mu$ are observed along the $[001]$ and…

Strongly Correlated Electrons · Physics 2018-09-19 K. Wolff , R. Eder , R. Schäfer , R. Schneider , D. Fuchs

We study the superconducting instability and the resulting superconducting states in a two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling at low electron density (namely the Fermi energy $E_F$ is lower than the energy $E_R$…

Superconductivity · Physics 2017-09-15 Luyang Wang

Semi-Dirac semimetals have received enthusiastic research both theoretically and experimentally in the recent years. Due to the anisotropic dispersion, its physical properties are highly direction-dependent. In this work we employ the…

Mesoscale and Nanoscale Physics · Physics 2022-03-08 Shihao Bi , Yiting Deng , Yan He , Peng Li

We discuss the transport properties of a disordered two-dimensional electron gas with strong Rashba spin-orbit coupling. We show that in the high-density regime where the Fermi energy overcomes the energy associated with spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2016-04-28 Valentina Brosco , Lara Benfatto , Emmanuele Cappelluti , Claudio Grimaldi

Quantum geometry appears as a key factor in understanding the optical properties of quantum materials, with the anticipation on diverging or quantized responses near the Dirac and Weyl points. Here we investigate linear and nonlinear…

It was recently shown that a spatially modulated Rashba spin-orbit coupling in a quantum wire drives a transition from a metallic to an insulating state when the wave number of the modulation becomes commensurate with the Fermi wave length…

Strongly Correlated Electrons · Physics 2011-09-02 Mariana Malard , Inna Grusha , G. I. Japaridze , Henrik Johannesson

Quantum interference between time-reversed electron paths in two dimensions leads to the well-known weak localization correction to resistance. If spin-orbit coupling is present, the resistance correction is negative, termed weak…

Mesoscale and Nanoscale Physics · Physics 2019-08-21 Xinxin Cai , Yilikal Ayino , Jin Yue , Peng Xu , Bharat Jalan , Vlad S. Pribiag

We develop a theory of electron transport through quantum dots that are weakly coupled to ferromagnetic leads. The theory covers both the linear and nonlinear transport regime, takes non-collinear magnetization of the leads into account,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Matthias Braun , Jürgen König , Jan Martinek

We investigate theoretically the spin-dependent electron transport in a Rashba quantum wire with rough edges. The charge and spin conductances are calculated as function of the electron energy or the wire length by adopting the spinresolved…

Mesoscale and Nanoscale Physics · Physics 2012-09-06 Xianbo Xiao , Huili Li , Guanghui Zhou , Nianhua Liu

We calculate the electrically induced spin accumulation in diffusive systems due to both Rashba (with strength $\alpha)$ and Dresselhaus (with strength $\beta)$ spin-orbit interaction. Using a diffusion equation approach we find that…

Mesoscale and Nanoscale Physics · Physics 2010-02-03 Mathias Duckheim , Daniel Loss , Matthias Scheid , Klaus Richter , Inanc Adagideli , Philippe Jacquod

We study a quantum network extending in one-dimension (chain of square loops connected at one vertex) made up of quantum wires with Rashba spin-orbit coupling. We show that the Rashba effect may give rise to an electron localization…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Dario Bercioux , Michele Governale , Vittorio Cataudella , Vincenzo Marigliano Ramaglia

The z axis magnetization of a two dimensional electron gas with contact repulsive interaction and in presence of a Rashba potential is computed by means of quantum field theory at second order. A striking effect of the pure Rashba…

Mesoscale and Nanoscale Physics · Physics 2011-12-21 Alberto Ambrosetti , Pier Luigi Silvestrelli , Flavio Toigo

Fermi liquid theory has been a foundation in understanding the electronic properties of materials. For weakly interacting two-dimensional (2D) electron or hole systems, electron-electron interactions are known to introduce quantum…

Strongly Correlated Electrons · Physics 2023-06-30 Arvind Shankar Kumar , Chieh-Wen Liu , Shuhao Liu , Loren N. Pfeiffer , Kenneth W. West , Alex Levchenko , Xuan P. A. Gao

We introduce an analytical approximation scheme to diagonalize parabolically confined two dimensional electron systems with both the Rashba and Dresselhaus spin-orbit interactions. The starting point of our perturbative expansion is a…

Mesoscale and Nanoscale Physics · Physics 2014-04-07 Sigurdur I. Erlingsson , J. Carlos Egues , Daniel Loss