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Chin. Phys. B, 2013, Vol. 22(11): 110309    DOI: 10.1088/1674-1056/22/11/110309
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Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice

Bao Ana, Chen Yao-Huab, Zhang Xiao-Zhonga
a Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;
b Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract  The effect of anisotropy caused by a confining potential on the properties of fermionic cold atoms in a triangular optical lattice is systematically investigated by using the dynamical cluster approximation combined with the continuous time quantum Monte–Carlo algorithm. The quantum phase diagrams which reflect the temperature–interaction relation and the competition between the anisotropic parameter and the interaction are presented with full consideration of the anisotropy of the system. Our results show that the system undergoes a transition from Fermi liquid to Mott insulator when the repulsive interaction reaches a critical value. The Kondo effect also can be observed in this system and the pseudogap is suppressed at low temperatures due to the Kondo effect. A feasible experiment protocol to observe these phenomena in an anisotropic triangular optical lattice with cold atoms is proposed, in which the hopping terms are closely related to the lattice confining potential and the atomic interaction can be adjusted via the Feshbach resonance.
Keywords:  triangular optical lattice      cold atoms      cluster dynamical approximation     
Received:  04 March 2013      Published:  28 September 2013
PACS:  03.75.Ss (Degenerate Fermi gases)  
  37.10.Jk (Atoms in optical lattices)  
  32.80.Hd (Auger effect)  
  67.85.Lm (Degenerate Fermi gases)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11074141, 11174169, and 10934010), the National Natural Science Foundation of China and Research Grant Council (NSFC/RGC) Joint Research Scheme (Grants No. 11061160490), and the National Basic Research Program of China (Grants Nos. 2011CB921502, 2012CB821305, 2010CB922904, 2009CB930701, and 2009CB929202).
Corresponding Authors:  Bao An     E-mail:

Cite this article: 

Bao An, Chen Yao-Hua, Zhang Xiao-Zhong Quantum phase transitions of fermionic atoms in an anisotropic triangular optical lattice 2013 Chin. Phys. B 22 110309

[1] Petsas K I, Coates A B and Grynberg G 1994 Phys. Rev. A 50 5173
[2] Greiner M and Fölling S 2008 Nature 453 736
[3] Jaksch D and Zoller P 2005 Ann. Phys. 315 52
[4] Bloch I, Dalibard J and Zwerger W 2008 Rev. Mod. Phys. 80 885
[5] Jördans R, Strohmaier N, Günter K, Moritz H and Esslinger T 2008 Nature 455 204
[6] Gemelke N, Zhang X, Hung C L and Chin C 2009 Nature 460 995
[7] Helmes RW, Costi T A and Rosch A 2008 Phys. Rev. Lett. 100 056403
[8] Hofstetter W, Cirac J I, Zoller P, Demler E and Lukin M D 2002 Phys. Rev. Lett. 89 220407
[9] Chin C, Grimm R, Julienne P and Tiesinga E 2010 Rev. Mod. Phys. 82 1225
[10] Greiner M, Mandel O, Esslinger T, Hänsch T W and Bloch I 2002 Nature 415 39
[11] Simon J, Bakr W S, Ma R, Tai M E, Preiss P M and Greiner M 2011 Nature 472 307
[12] Wei D, Xiong D Z and Chen H X 2007 Chin. Phys. Lett. 24 1541
[13] Struck J, Ölschläger C, Le Targat R, Soltan-Panahi P, Eckardt A, Lewenstein M, Windpassinger P and Sengstock K 2011 Science 333 996
[14] Shimizu Y, Miyagawa K, Kanoda K, Maesato M and Saito G 2003 Phys. Rev. Lett. 91 107001
[15] Harris M J, Bramwell S T, McMorrow D F, Zeiske T and Godfrey KW 1997 Phys. Rev. Lett. 79 2554
[16] Kurosaki Y, Shimizu Y, Miyagawa K, Kanoda K and Saito G 2005 Phys. Rev. Lett. 95 177001
[17] Castelnovo C, Moessner R and Sondhi S L 2008 Nature 451 42
[18] Ohashi T, Momoi T, Tsunetsugu H and Kawakami N 2008 Phys. Rev. Lett. 100 076402
[19] Yoshioka T, Koga A and Kawakami N 2009 Phys. Rev. Lett. 103 036401
[20] Duan L M, Demler E and Lukin M D 2003 Phys. Rev. Lett. 91 090402
[21] Duan L M 2005 Phys. Rev. Lett. 95 243202
[22] Wu W, Chen Y H, Tao H S, Tong N H and Liu W M 2010 Phys. Rev. B 82 245102
[23] Chen Y H, Tao H S, Yao D X and Liu W M 2012 Phys. Rev. Lett. 108 246402
[24] Chen Y H, Wu W, Tao H S and Liu W M 2010 Phys. Rev. A 82 043625
[25] Santos L, BaranovMA, Cirac J I, Everts H U, Fehrmann H and Lewenstein M 2004 Phys. Rev. Lett. 93 030601
[26] Schneider U, Hackermüller L, Will S, Best Th, Bloch I, Costi T A, Helmes R W, Rasch D and Rosch A 2008 Science 322 1520
[27] Chai S J, Wang P J and Fu Z K 2011 Chin. Phys. B 20 103401
[28] Maier T, Jarrell M, Pruschke T and Hettler M H 2005 Rev. Mod. Phys. 77 1027
[29] Rubtsov A N, Savkin V V and Lichtenstein A I 2005 Phys. Rev. B 72 035122
[30] Metzner W and Vollhardt D 1989 Phys. Rev. Lett. 62 324
[31] Jarrell M and Gubernatis J E 1996 Phys. Rep. 269 133
[32] Parcollet O, Biroli G and Kotliar G 2004 Phys. Rev. Lett. 92 226402
[33] O’Hara K M, Hemmer S L, Gehm M E, Granade S R and Thomas J E 2002 Science 298 2179
[34] Regal C A, Ticknor C, Bohn J L and Jin D S 2003 Nature 424 47
[35] Klempt C, Henninger T, Topic O, Will J, Ertmer W, Tiemann E and Arlt J 2007 Phys. Rev. A 76 020701
[36] Loftus T, Regal C A, Ticknor C, Bohn J L and Jin D S 2002 Phys. Rev. Lett. 88 173201
[37] Zwierlein M W, Schirotzek A, Schunck C H and Ketterle W 2006 Science 311 492
[38] Strohmaier N, Takasu Y, Günter K, Jördens R, Köhl M, Moritz H and Esslinger T 2007 Phys. Rev. Lett. 99 220601
[39] Chin J K, Miller D E, Liu Y, Stan C, Setiawan W, Sanner C, Xu K and Ketterle W 2006 Nature 443 961
[40] Köhl M, Moritz H, Stöferle T, Günter K and Esslinger T 2005 Phys. Rev. Lett. 94 080403
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