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We theoretically investigate the inhomogeneous Fulde-Ferrell (FF) superfluidity in a three dimensional atomic Fermi gas with Rashba spin-orbit coupling near a broad Feshbach resonance. We show that within mean-field theory the FF superfluid…

Quantum Gases · Physics 2013-10-10 Hui Hu , Xia-Ji Liu

We investigate theoretically Bose-Einstein condensation of an ideal, trapped Bose gas in the presence of Rashba spin-orbit coupling. Analytic results for the critical temperature and condensate fraction are derived, based on a…

Quantum Gases · Physics 2012-01-30 Hui Hu , Xia-Ji Liu

We investigate the new physics that arises when a correlated quantum impurity hybridizes with Fermi gas with a generalized Rashba spin-orbit coupling produced via a uniform synthetic non-Abelian gauge field. We show that the impurity…

Quantum Gases · Physics 2016-06-29 Adhip Agarwala , Vijay B. Shenoy

We derive expressions for spin and density correlation functions in the (greatly enhanced) pseudogap phase of spin-orbit coupled Fermi superfluids. Density-density correlation functions are found to be relatively insensitive to the presence…

Quantum Gases · Physics 2015-06-22 Chien-Te Wu , Brandon M. Anderson , Rufus Boyack , K. Levin

We propose a model for the two-dimensional electron gas formed at the interface of oxide heterostructures that includes a Rashba spin-orbit coupling proportional to an electric field oriented perpendicularly to the interface. Taking into…

Mesoscale and Nanoscale Physics · Physics 2014-06-06 D. Bucheli , M. Grilli , F. Peronaci , G. Seibold , S. Caprara

We investigate the superconducting instability of a two-dimensional repulsive fermion gas with Rashba spin-orbit coupling $\al_R$. Using renormalization group approach, we find the superconducting transition temperature as a function of the…

Superconductivity · Physics 2013-11-13 Luyang Wang , Oskar Vafek

We theoretically investigate a two-dimensional harmonically-trapped gas of identical atoms with Rashba spin-orbit coupling and no interatomic interactions. In analogy with the spin Hall effect in uniform space, the gas exhibits a spin Hall…

Quantum Gases · Physics 2017-11-28 J. Armaitis , J. Ruseckas , H. T. C. Stoof , R. A. Duine

Exploiting inversion symmetry breaking (ISB) in systems with strong spin-orbit coupling promises control of spin through electric fields - crucial to achieve miniaturization in spintronic devices. Delivering on this promise requires a…

Mesoscale and Nanoscale Physics · Physics 2021-04-14 Chi Ming Yim , Dibyashree Chakraborti , Luke C. Rhodes , Seunghyun Khim , Andrew P. Mackenzie , Peter Wahl

We measure the density profiles for a Fermi gas of $^6$Li containing $N_1$ spin-up atoms and $N_2$ spin-down atoms, confined in a quasi-two-dimensional geometry. The spatial profiles are measured as a function of spin-imbalance $N_2/N_1$…

Quantum Gases · Physics 2015-03-20 W. Ong , C. -Y. Cheng , I. Arakelyan , J. E. Thomas

We analytically evaluate charge and spin density response functions of the clean two-dimensional electron gas with Rashba spin-orbit coupling at finite momenta and frequencies. On the basis of our exact expressions we discuss the accuracy…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. Pletyukhov , S. Konschuh

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

Rashba spin-orbit coupling emerges in materials lacking of structural inversion symmetry, such as heterostructures, quantum wells, surface alloys and polar materials, just to mention few examples. It yields a coupling between the spin and…

Mesoscale and Nanoscale Physics · Physics 2017-08-31 Valentina Brosco , Claudio Grimaldi , Emmanuele Cappelluti , Lara Benfatto

We derive analytical expressions for the quasiparticle lifetime tau, the effective mass m*, and the Green's function renormalization factor Z for a 2D Fermi liquid with electron-electron interaction in the presence of the Rashba spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 D. S. Saraga , Daniel Loss

We propose an experimental scheme to study spin-orbit coupling effects in a of two-dimensional (2D) Fermi atomic gas cloud by coupling its internal electronic states (pseudospins) to radiation in a delta configuration. The induced…

Statistical Mechanics · Physics 2009-11-13 Xiong-Jun Liu , Mario F. Borunda , Xin Liu , Jairo Sinova

We show that Rashba spin-orbit coupling may result in an energy gap in the spectrum of electrons in a two-mode quantum wire if a suitable confining potential is chosen. This leads to a dip in the conductance and a spike in the spin current…

Mesoscale and Nanoscale Physics · Physics 2014-02-03 K. E. Nagaev , A. S. Goremykina

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

The stability of an unpolarized two-component dipolar Fermi gas is studied within mean-field theory. Besides the known instability towards spontaneous magnetization with Fermi sphere deformation, another instability towards spontaneous…

Quantum Gases · Physics 2012-03-26 T. Sogo , M. Urban , P. Schuck , T. Miyakawa

Spin polarization of a two-dimensional electron gas with Rashba spin-orbit interaction, induced by a thermo-current, is considered theoretically. It is shown that a temperature gradient gives rise to an in-plane spin polarization of the…

Mesoscale and Nanoscale Physics · Physics 2013-08-27 A. Dyrdał , M. Inglot , V. K. Dugaev , J. Barnaś

We show the spin-orbital coupling induced by an artificial light-induced gauge field can fully restore superfluidity suppressed by population imbalance in a two-dimensional (2D) Fermi gas, leading to unconventional superfluid states either…

Quantum Gases · Physics 2011-10-12 J. -N. Zhang , Y. -H. Chan , L. -M. Duan

We developed functional integral formulation for the stripe phase of a spinor Bose-Einstein condensates with Rashba spin-orbit coupling. The excitation spectrum is found to exhibit double gapless band structures, identified to be two…

Quantum Gases · Physics 2018-04-05 Renyuan Liao