[1]赵华,李华艳,周晓凡.自旋轨道耦合对超冷排斥费米气体相变的影响[J].深圳大学学报理工版,2014,31(6):570-575.[doi:10.3724/SP.J.1249.2014.06570]
　Zhao Hua,Li Huayan,and Zhou Xiaofan.Effects of the spin-orbit coupling on the phase transition of ultra cold repulsive Fermi gases[J].Journal of Shenzhen University Science and Engineering,2014,31(6):570-575.[doi:10.3724/SP.J.1249.2014.06570]
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自旋轨道耦合对超冷排斥费米气体相变的影响()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第31卷
期数:
2014年第6期
页码:
570-575
栏目:
物理
出版日期:
2014-11-20

文章信息/Info

Title:
Effects of the spin-orbit coupling on the phase transition of ultra cold repulsive Fermi gases
文章编号:
201406003
作者:
赵华1; 李华艳1; 周晓凡2
1）深圳大学物理科学与技术学院， 深圳 518060
2）山西大学理论物理研究所，太原 030006
Author(s):
Zhao Hua1;  Li Huayan1;  and Zhou Xiaofan2
1) College of Physics Science and Technology, Shenzhen University, Shenzhen 518060, P.R.China
2) Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, P.R.China
关键词:
凝聚态物理; Fermi-Hubbard模型; 密度矩阵重整化群; 光学晶格; 自旋轨道耦合; Zeeman场; Mott绝缘态
Keywords:
condensed matter physics;  Fermi-Hubbard model;  density-matrix-renormalization-group （DMRG）;  optical lattice;  spin-orbit coupling （SOC）;  Zeeman field;  Mott insulator phase
分类号:
O 469
DOI:
10.3724/SP.J.1249.2014.06570
文献标志码:
A
摘要:
利用密度矩阵重整化群（density-matrix-renormalization-group，DMRG）方法，研究自旋轨道耦合和Zeeman场作用下处于一维光学晶格中的排斥费米气体的量子相变．研究表明，当自旋轨道耦合与Zeeman场共同作用于系统时，自旋轨道耦合效应将增强系统的金属性，同时削弱Zeeman场对系统的极化作用．当自旋轨道耦合作用较弱使系统保持为Mott绝缘态时，随自旋轨道耦合强度的变化，Zeeman场的极化效应使系统呈现不同的量子态．
Abstract:
By using the density-matrix-renormalization-group （DMRG） method, the phase transition of ultra-cold repulsive Fermi gases loaded on one-dimensional optical lattices is investigated when spin-orbit coupling （SOC） and Zeeman field are involved. It is found that the SOC effects enhance the metal phase and reduce the polarization of the system in the presence of both the SOC and a large Zeeman field. Furthermore, when the system keeps a Mott insulation state under the weak spin orbit coupling, it is shown at different SOC strengths, the system appears as different quantum states due to the polarization effect of Zeeman field.

参考文献/References:

［1］ Anderson M H, Ensher J R, Matthews M R. Observation of Bose-Einstein condensation in a dilute stomic vapor［J］. Science, 1995, 269（5221）: 198-201.
［2］ Davis K B, Mewes M O, Andrews M R, et al. Bose-Einstein condensation in a gas of sodium atoms［J］. Physical Review Letters, 1995, 75（22）:3969-3973.
［3］ Bradley C C, Sackett C A, Tollett J J, et al. Evidence of Bose-Einstein condensation in an atomic gas with attractive interactions［J］. Physical Review Letters, 1995, 75: 1687-1690.
［4］ O’Hara K M, Hemmer S L, Gehm M E, et al. Observation of a strongly interacting degenerate Fermi gas of atoms［J］. Science, 2002, 298（5061）: 2179-2182.
［5］ Zwierlein M W, Stan C A, Schunck C H, et al. Observation of Bose-Einstein condensation of molecules［J］. Physical Review Letters, 2003, 91（25）: 250401-1-250401-5.
［6］ Gong Ming, Chen Gang, Jia Suotang, et al. Searching for majorana fermions in 2D spin-orbit coupled Fermi superfluids at finite temperature［J］. Physical Review Letters, 2012,109（10）: 105302-1-105302-6.
［7］ Iskin M, Subasi A L. Topological superfluid phases of an atomic Fermi gas with in- and out-of-plane Zeeman fields and equal Rashba-Dresselhaus spin-orbit coupling［J］. Physical Review A, 2013, 87（06）: 063627-1-063627-5.
［8］ Seo K, Han L. Emergence of majorana and Dirac particles in ultracold fermions via tunable interactions, spin-orbit effects, and Zeeman fields［J］. Physical Review Letters, 2012, 109（10）: 105303-1-105303-5.
［9］ Hu Hui, Jiang Lei, Han Pu, et al. Universal impurity-induced bound state in topological superfluids［J］. Physical Review Letters, 2013, 110（2）: 020401-1-020401-5.
［10］ Xiong Hongwei, Lu Baolong, Liu Shujuan, et al. New advances in ultracold Fermi gases［J］. Progress in Physics, 2005, 25（3）: 296-316.（in Chinese）
熊宏伟, 吕宝龙, 刘淑娟, 等. 超冷费米气体研究的新进展［J］. 物理学进展, 2005, 25（3）: 296-316.
［11］ Wan Langhui，Wang Bin，Wei Yadong．Nonlinear thermoelectric transport of carbon nanotube［J］. Journal of Shenzhen University Science and Engineering, 2009, 26（4）:356-359.（in Chinese）
万浪辉, 王斌, 卫亚东. 纳米碳管的非线性热电输运［J］．深圳大学学报理工版, 2009, 26（4）:356-359.
［12］ Liang Junjun，Zhou Xiaofan，Chui Pak Hong，et al．Spin-orbit coupling induced unconventional pairings in a one-dimensional lattice ［J］. Theoretical Model, 2013, 1404.3009v1.
［13］ Li Xiaolei, Liang Junjun. Suoerfluidity in a trappped gas of repulsive Fermi gases loaded on an optical lattice［J］. Journal of Shanxi University Natural Science Edition, 2013, 36（2）: 204-207.（in Chinese）
李小磊, 梁军军. 光学晶格中一维排斥费米气体的超流特性［J］. 山西大学学报自然科学版, 2013, 36（2）: 204-207.
［14］ Chen Ahai, Gao Xianlong. Pure Fulde-Ferrell-Larkin ovchinnikov state in optical lattices［J］. Physical Review B, 2012, 85（13）:134203-1-134203-5.
［15］ Chen Ahai, Gao Xianlong. Phase separation in optical lattices in a spin-dependent external potential［J］. Physical Review A, 2010, 81（1）: 013628-1-013628-6.
［16］ Chen Gang, Gong Ming, Zhang Chuanwei. BCS-BEC crossover in spin-orbit-coupled two-dimensional Fermi gases［J］. Physical Review A, 2012, 85（1）: 013601-1-013601-6.
［17］ Rigol M, Muramatsu A, Batrouni G G, et al. Local quantum criticality in confined fermions on optical lattices［J］. Physical Review Letters, 2003, 91（13）: 130403-1-130403-4.
［18］ Machida M, Okumura M, Yamada S, et al. Mott phase in polarized two-component atomic Fermi lattice gas［J］. Physical Review B, 2008, 78（23）: 235117-1-235117-5.
［19］ Zhang Jinyi, Ji Sicong, Chen Zhu, et al. Collective dipole oscillations of a spin-orbit coupled bose-einstein conden［J］. Physical Review Letters, 2012, 109（11）: 115301-1-115301-5.
［20］ Qu Chunlei, Hamner C, Gong Ming, et al. Observation of Zitterbewegung in a spin-orbit-coupled Bose-Einstein condensate［J］. Physical Review A, 2013, 88（2）: 021604-1-021604-5.
［21］ Wang Pengjun, Yu Zengqiang, Fu Zhengkun, et al. Spin-orbit coupled degenerate Fermi gases［J］. Physical Review Letters, 2012, 109（9）: 095301-1-095301-5.
［22］ Williams R A, Beeler M C, LeBlanc L J, et al. Raman-induced interactions in a single-component Fermi gas near an s-wave feshbach resonance［J］. Physical Review Letters, 2013,111（9）: 095301-1-095301-5.
［23］ Cheuk L W, Sommer A T, Hadzibabic Z, et al. Spin-injection spectroscopy of a spin-orbit coupled Fermi gas［J］. Physical Review Letters, 2012, 109（9）: 095302-1-095302-5.
［24］ Zhang Chuanwei, Sumanta Tewari, Roman M, et al. px+ipy superfluid from s-wave interactions of fermionic cold atoms［J］. Physical Review Letters, 2008, 101（16）: 160401-1-160401-4.
［25］ Liu Xiaji, Hu Hui. Topological Fulde-Ferrell superfluid in spin-orbit-coupled atomic Fermi gases［J］. Physical Review A, 2013, 88（2）: 023622-1-023622-5.
［26］ Fulde P, Ferrell R A. Superconductivity in a strong spin-exchange field［J］. Physical Review, 1964, 135（3A）: A550-A562.
［27］ Qu Chunlei, Gong Ming, Zhang Chuanwei. FFLO or majorana superfluids: the fate of fermionic cold atoms in spin-orbit coupled optical lattices［J］. Physical Review A, 2014, 89（5）: 053618-1-053618-7.

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备注/Memo

备注/Memo:
Received：2014-03-21；Revised：2014-08-17；Accepted：2014-09-08
Foundation：National Natural Science Foundation of China （10774095）; Shenzhen Science and Technology Research Foundation （JC201005280474A）
Corresponding author：Associate professor Zhao Hua．E-mail: zhaohua@szu.edu.cn
Citation：Zhao Hua, Li Huayan，Zhou Xiaofan．Effects of the spin-orbit coupling on the phase transition of ultra cold repulsive Fermi gases［J］. Journal of Shenzhen University Science and Engineering, 2014, 31（6）: 570-575.（in Chinese）
基金项目：国家自然科学基金资金项目（10774095）；深圳市科技研发基金资助项目（JC201005280474A）
作者简介：赵华（1973—），女（汉族），山西省中阳县人，深圳大学副教授、博士．E-mail：zhaohua@szu.edu.cn
引文：赵华，李华艳，周晓凡．自旋轨道耦合对超冷排斥费米气体相变的影响［J］. 深圳大学学报理工版，2014，31（6）：570-575.
更新日期/Last Update: 2014-10-29