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We theoretically investigate the momentum-resolved radio-frequency spectroscopy of a harmonically trapped atomic Fermi gas near a Feshbach resonance in the presence of equal Rashba and Dresselhaus spin-orbit coupling. The system is…

量子气体 · 物理学 2012-12-13 Shi-Guo Peng , Xia-Ji Liu , Hui Hu , Kaijun Jiang

We investigate experimentally and theoretically radio-frequency spectroscopy and pairing of a spin-orbit-coupled Fermi gas of $^{40}$K atoms near a Feshbach resonance at $B_{0}=202.2$ G. Experimentally, the integrated spectroscopy is…

量子气体 · 物理学 2015-06-15 Zhengkun Fu , Lianghui Huang , Zengming Meng , Pengjun Wang , Xia-Ji Liu , Han Pu , Hui Hu , Jing Zhang

We briefly review recent progress on ultracold atomic Fermi gases with different types of synthetic spin-orbit coupling, including the one-dimensional (1D) equal weight Rashba-Dresselhaus and two-dimensional (2D) Rasbha spin-orbit…

量子气体 · 物理学 2017-08-23 Jing Zhang , Hui Hu , Xia-Ji Liu , Han Pu

Ultracold atomic gases provide a novel platform with which to study spin-orbit coupling, a mechanism that plays a central role in the nuclear shell model, atomic fine structure and two-dimensional electron gases. This paper introduces a…

量子气体 · 物理学 2015-06-22 Q. Guan , X. Y. Yin , S. E. Gharashi , D. Blume

We investigate theoretically momentum-resolved radio-frequency (rf) spectroscopy of a noninteracting atomic Fermi gas in a spin-orbit coupled lattice. This lattice configuration has been recently created at MIT [Cheuk et al.,…

量子气体 · 物理学 2012-10-03 Xia-Ji Liu

Motivated by the prospect of realizing a Fermi gas of $^{40}$K atoms with a synthetic non-Abelian gauge field, we investigate theoretically a strongly interacting Fermi gas in the presence of a Rashba spin-orbit coupling. As the two-fold…

量子气体 · 物理学 2011-11-18 Hui Hu , Lei Jiang , Xia-Ji Liu , Han Pu

We study interacting Rashba-Dresselhaus fermions in two spatial dimensions. First, we present a new exact solution to the two-particle pairing problem of spin-orbit-coupled fermions for arbitrary Rashba and Dresselhaus spin-orbit…

量子气体 · 物理学 2013-10-16 So Takei , Chien-Hung Lin , Brandon M. Anderson , Victor Galitski

We theoretically investigate a Rashba spin-orbit coupled Fermi gas near Feshbach resonances, by using mean-field theory and a two-channel model that takes into account explicitly Feshbach molecules in the close channel. In the absence of…

量子气体 · 物理学 2013-01-23 Jing-Xin Cui , Xia-Ji Liu , Gui Lu Long , Hui Hu

We examine pairing and molecule formation in strongly-interacting Fermi gases, and we discuss how radio-frequency (RF) spectroscopy can reveal these features. For the balanced case, the emergence of stable molecules in the BEC regime…

其他凝聚态物理 · 物理学 2014-11-18 P. Massignan , G. M. Bruun , H. T. C. Stoof

We derive general conditions for the emergence of singlet Feshbach molecules in the presence of artificial Zeeman fields for arbritary mixtures of Rashba and Dresselhaus spin-orbit orbit coupling in two or three dimensions. We focus on the…

量子气体 · 物理学 2016-02-10 Doga Murat Kurkcuoglu , C. A. R. Sa de Melo

We calculate the reflection and transmission probabilities in a one-dimensional Fermi gas with an equal mixing of the Rashba and Dresselhaus spin-orbit coupling (RD-SOC) produced by an external Raman laser field. These probabilities are…

量子物理 · 物理学 2016-12-07 Su-Ju Wang , Chris H. Greene

Ultracold gases of interacting spin-orbit coupled fermions are predicted to display exotic phenomena such as topological superfluidity and its associated Majorana fermions. Here, we experimentally demonstrate a route to strongly-interacting…

量子气体 · 物理学 2013-08-28 R. A. Williams , M. C. Beeler , L. J. LeBlanc , K. Jimenez-Garcia , I. B. Spielman

We present calculations of the frequency-dependent spin susceptibility tensor of a two-dimensional electron gas with competing Rashba and Dresselhaus spin-orbit interaction. It is shown that the interplay between both types of spin-orbit…

介观与纳米尺度物理 · 物理学 2015-05-13 Catalina López-Bastidas , Jesús A. Maytorena , Francisco Mireles

Rf spectroscopy is one of the most powerful probing techniques in the field of ultracold gases. We report on a novel rf spectroscopy scheme with which we can detect very weak signals of only a few atoms. Using this method, we extended the…

量子气体 · 物理学 2018-09-12 Constantine Shkedrov , Yanay Florshaim , Gal Ness , Andrey Gandman , Yoav Sagi

We investigate thermal evolution of radio-frequency (RF) spectra of a spin-imbalanced Fermi gas near a Feshbach resonance in which degenerate Fermi-polaron and classical Boltzmann-gas regimes emerge in the low-temperature and…

量子气体 · 物理学 2019-06-19 Hiroyuki Tajima , Shun Uchino

The coupling of the spin of electrons to their motional state lies at the heart of recently discovered topological phases of matter. Here we create and detect spin-orbit coupling in an atomic Fermi gas, a highly controllable form of quantum…

We study the frequency dependent spin- and charge- conductivity tensors of a two-dimensional electron gas (2DEG) with Rashba and Dresselhaus spin-orbit interaction. We show that the angular anisotropy of the spin-splitting energy induced by…

介观与纳米尺度物理 · 物理学 2009-11-11 Jesús A. Maytorena , Catalina López-Bastidas , Francisco Mireles

In this paper we explore the spin-orbit-induced bound state and molecular signature of the degenerate Fermi gas in a narrow Feshbach resonance based on a generalized two-channel model. Without the atom-atom interactions, only one bound…

量子气体 · 物理学 2013-07-10 Kuang Zhang , Gang Chen , Suotang Jia

We realize and study a strongly interacting two-component atomic Fermi gas confined to two dimensions in an optical lattice. Using radio-frequency spectroscopy we measure the interaction energy of the strongly interacting gas. We observe…

We explore the two-body spectra of spin-$1/2$ fermions in isotropic harmonic traps with external spin-orbit potentials and short range two-body interactions. Using a truncated basis of total angular momentum eigenstates, non-perturbative…

量子气体 · 物理学 2015-04-16 Cory D. Schillaci , Thomas C. Luu
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