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Inspired by the recent experimental observation of topological superconductivity in ferromagnetic chains, we consider a dilute 2D lattice of magnetic atoms deposited on top of a superconducting surface with a Rashba spin-orbit coupling. We…

介观与纳米尺度物理 · 物理学 2015-06-17 Joel Röntynen , Teemu Ojanen

We study the two-dimensional Hubbard model with the Rashba type spin-orbit coupling within and beyond the mean-field theory. The antiferromagnetic ground state for the model at half-filling and the Cooper pairing induced by…

超导电性 · 物理学 2022-03-23 Jingxiang Zhao , Qiang Gu

We show that the pair spin-orbit interaction (PSOI) created by the Coulomb fields of interacting electrons leads to the appearance of an unconventional correlated electronic state in two-dimensional materials with the large Rashba effect.…

强关联电子 · 物理学 2023-02-06 Yasha Gindikin , Vladimir A. Sablikov

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…

量子气体 · 物理学 2012-03-26 T. Sogo , M. Urban , P. Schuck , T. Miyakawa

A consistent picture on the mean-field level of the magnetic properties and electronic structure of the superconducting itinerant ferromagnet UGe$_2$ is shown to require inclusion of correlation effects beyond the local density…

超导电性 · 物理学 2009-10-31 A. B. Shick , W. E. Pickett

We use the density matrix renormalization group method(DMRG) and the infinite time evolved block decimation method(iTEBD) to investigate the ground states of the spin-orbit coupled Fermi gas in a one dimensional optical lattice with a…

量子气体 · 物理学 2014-11-25 Y. H. Chan

We study the fate of a two-dimensional system of interacting fermions with Rashba spin-orbit coupling in the dilute limit. The interactions are strongly renormalized at low densities, and give rise to various fermionic liquid crystalline…

强关联电子 · 物理学 2014-12-12 Jonathan Ruhman , Erez Berg

We study the edge states in a two dimensional electron gas with a transverse magnetic field and Rashba spin-orbit coupling. In the bulk, the interplay between the external field perpendicular to the gas plane and the spin-orbit coupling…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Reynoso , Gonzalo Usaj , M. J. Sanchez , C. A. Balseiro

We study the superconducting instabilities of a single species of two-dimensional Rashba-Dirac fermions, as it pertains to the surface of a three-dimensional time-reversal symmetric topological band insulators. We also discuss the…

超导电性 · 物理学 2013-05-29 Luiz Santos , Titus Neupert , Claudio Chamon , Christopher Mudry

The problem of scattering of the two-dimensional electron gas on the lateral one-dimensional superlattice both having different strengths of Rashba spin-orbit coupling is investigated. The scattering is considered for all the electron…

介观与纳米尺度物理 · 物理学 2009-11-11 D. V. Khomitsky

Multi-band effects in hybrid structures provide a rich playground for unconventional superconductivity. We combine two complementary approaches based on density-functional theory (DFT) and effective low-energy model theory in order to…

超导电性 · 物理学 2023-11-29 Philipp Rüßmann , Masoud Bahari , Stefan Blügel , Björn Trauzettel

We study a Rashba superconductor thin film with ferromagnetic insulators (FIs) placed on top of it. We show that the ferromagnetic insulators generate circular super-currents, enabling long-range magnetic interactions (LRMI), decaying in…

超导电性 · 物理学 2026-05-18 Ming Yan Wang , Yi Liu , Yao Lu

We study a chain of magnetic moments exchange coupled to a conventional three dimensional superconductor. In the normal state the chain orders into a collinear configuration, while in the superconducting phase we find that ferromagnetism is…

超导电性 · 物理学 2016-04-27 M. Schecter , K. Flensberg , M. H. Christensen , B. M. Andersen , J. Paaske

In two-dimensional system with Rashba spin-orbit coupling, it is well-known that superconductivity can have mixed spin-singlet and -triplet parity, and the $\boldsymbol{d}$-vector of spin-triplet pairing is parallel to…

超导电性 · 物理学 2024-10-21 Ran Wang , Jiayang Li , Xinliang Huang , Lichuan Wang , Rui Song , Ning Hao

We investigate thermoelectric properties of a ferromagnet-superconductor hybrid structure with Rashba spin-orbit interaction and delta function potential barrier at the interfacial layer. The exponential rise of thermal conductance with…

介观与纳米尺度物理 · 物理学 2017-09-07 Paramita Dutta , Arijit Saha , A. M. Jayannavar

The transport properties of a magnetic two dimensional electron gas consisting of a modulation doped n type HgMnTe/HgCdTe quantum well, QW, have been investigated. By analyzing the Shubnikov-de Haas oscillations and the node positions of…

强关联电子 · 物理学 2007-05-23 Y. S. Gui , C. R. Becker , J. Liu , V. Daumer , V. Hock , H. Buhmann , L. W. Molenkamp

The Rashba Hamiltonian describes the splitting of the conduction band as a result of spin-orbit coupling in the presence of an external field and is commonly used to model the electronic structure of confined narrow-gap semiconductors. Due…

介观与纳米尺度物理 · 物理学 2009-11-07 Laurens W. Molenkamp , Georg Schmidt , Gerrit E. W. Bauer

We study spectroscopic properties of ferromagnetic-superconductor heterostructures with strong spin-orbit coupling of the Rashba type and in the presence of exchange fields. The superconducting layer (film) experiences both an intrinsic…

超导电性 · 物理学 2014-03-28 P. M. Svetlichnyy , Z. Jiang , C. A. R. Sá de Melo

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…

介观与纳米尺度物理 · 物理学 2014-02-03 K. E. Nagaev , A. S. Goremykina

Interacting one-dimensional conductors with Rashba spin-orbit coupling are shown to exhibit a spin-selective Peierls-type transition into a mixed spin-charge-density-wave state. The transition leads to a gap for one-half of the conducting…

介观与纳米尺度物理 · 物理学 2010-08-03 Bernd Braunecker , George I. Japaridze , Jelena Klinovaja , Daniel Loss