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利用阻尼映射Gross-Pitaevkii方程, 研究了二维体系中自旋轨道耦合的 23Na自旋-1 玻色-爱因斯坦凝聚体中的涡旋斑图, 探索自旋轨道耦合强度对涡旋斑图的影响. 研究发现, 较弱的自旋轨道耦合就可以完全破坏不考虑自旋轨道耦合情况下出现的周期性涡旋晶格; 在自旋轨道耦合较强的情况下, 各自旋态的涡旋易形成涡旋组, 它们绕凝聚体中心形成花瓣状涡旋斑图.
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关键词:
- 玻色-爱因斯坦凝聚体 /
- 自旋 /
- 涡旋
Using the damped projecting Gross-Pitaevkii align, we study the vortex pattern in the two-dimensional spin-orbit coupled spin-1 Bose-Einstein condensate of 23Na. We concentrate on the influence of spin-orbit coupling on the vortex pattern and find that the periodic vortex lattice which would occur without any spin-orbit coupling, can be completely destroyed although the strength of spin-orbit coupling is not very strong. With a strong spin-orbit coupling, vortexes in the condensate of each spin state tend to form some vortex groups and then they create a flower-like lattice around the center.-
Keywords:
- Bose-Einstein condensate /
- spin /
- vortex
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[18] Xu X Q, Han J H 2011 Phys. Rev. Lett. 107 200401
[19] Zhou X F, Zhou J, Wu C 2011 Phys. Rev. A 84 063624
[20] Zhao L, Yang J, Xie Q Y, Tian M, Duan Y S 2012 Chin. Phys. B 21 057401
[21] Chen A X, Qiu W Y, Wang Z P 2008 Chin. Phys. B 17 4204
[22] Liu C F, Liu W M 2012 Phys. Rev. A 86 033602
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[24] Rooney S J, Bradley A S, Blakie P B 2010 Phys. Rev. A 81 023630
[25] Liu C F, Yu Y M, Gou S C, Liu W M 2013 Phys. Rev. A 87 063630
[26] Su S W, Hsueh C H, Liu I K, Horng T L, Tsai Y C, Gou S C, Liu W M 2011 Phys. Rev. A 84 023601
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[1] Bychkov Y A, Rashba E I 1984 J. Phys. C 17 6039
[2] Dresselhaus G 1955 Phys. Rev. 100 580
[3] Kato Y K, Myers R C, Gossard A C, Awschalom D D 2004 Science 306 1910
[4] König M, Wiedmann S, Brne C, Roth A, Buhmann H, Molenkamp L W, Qi X L, Zhang S C 2007 Science 318 766
[5] Kane C L, Mele E J 2005 Phys. Rev. Lett. 95 146802
[6] Bernevig B A, Hughes T L, Zhang S C 2006 Science 314 1757
[7] Hsieh D, Qian D, Wray L, Xia Y, Hor Y S, Cava R J, Hasan M Z 2008 Nature 452 970
[8] Sun K, Liu W V, Hemmerich A, Sarma S D 2012 Nature Phys. 8 67
[9] Lin Y J, Jiménez-García K, Spielman I B 2011 Nature 471 83
[10] Liao R, Yi-Xiang Y, Liu W M 2012 Phys. Rev. Lett. 108 080406
[11] Wang C, Gao C, Jian C M, Zhai H 2010 Phys. Rev. Lett. 105 160403
[12] Ho T L, Zhang S Z 2011 Phys. Rev. Lett. 107 150403
[13] Jian C M, Zhai H 2011 Phys. Rev. B 84 060508(R)
[14] Sinha S, Nath R, Santos L 2011 Phys. Rev. Lett. 107 270401
[15] Hu H, Ramachandhran B, Pu H, Liu X J 2012 Phys. Rev. Lett. 108 010402
[16] Wu C, Mondragon-Shem I, Zhou X F 2011 Chin. Phys. Lett. 28 097102
[17] Liu C F, Fan H, Zhang Y C, Wang D S, Liu W M 2012 Phys. Rev. A 86 053616
[18] Xu X Q, Han J H 2011 Phys. Rev. Lett. 107 200401
[19] Zhou X F, Zhou J, Wu C 2011 Phys. Rev. A 84 063624
[20] Zhao L, Yang J, Xie Q Y, Tian M, Duan Y S 2012 Chin. Phys. B 21 057401
[21] Chen A X, Qiu W Y, Wang Z P 2008 Chin. Phys. B 17 4204
[22] Liu C F, Liu W M 2012 Phys. Rev. A 86 033602
[23] Bradley A S, Gardiner C W, Davis M J 2008 Phys. Rev. A 77 033616
[24] Rooney S J, Bradley A S, Blakie P B 2010 Phys. Rev. A 81 023630
[25] Liu C F, Yu Y M, Gou S C, Liu W M 2013 Phys. Rev. A 87 063630
[26] Su S W, Hsueh C H, Liu I K, Horng T L, Tsai Y C, Gou S C, Liu W M 2011 Phys. Rev. A 84 023601
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