Effects of frustration on the anisotropic triangular lattice bosons

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	Effects of frustration on the anisotropic triangular lattice bosons
	Gan, JY
刊名	PHYSICAL REVIEW B
	2008
卷号	78 期号:1
关键词	QUANTUM MONTE-CARLO MODEL SUPERFLUID
ISSN号	1098-0121
通讯作者	Gan, JY: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	We study the extended hard-core Bose-Hubbard model with nearest-neighbor interactions on a triangular lattice with spatial anisotropy by quantum Monte Carlo simulations. The effects of the geometric frustration or the anisotropic strength, represented by the ratio t(')/t between the intrachain nearest-neighbor hopping t(') and the interchain hopping t, are studied. We find that for small values of anisotropy ratio t(')/t, a solid state emerges at rho=1/2 and a supersolid is unstable toward phase separation; for large values of anisotropy ratio t(')/t, solid states emerge at rho=1/3, 2/3, and a supersolid phase is stable in the region rho < 2/3; for intermediate values of anisotropy ratio t(')/t, three kinds of solid states at fillings rho=1/3, 1/2, and rho=2/3 coexist and no stable supersolid phase is observed. At half filling, we find that with increasing frustration t(')/t, the rho=1/2 solid transitions indirectly into the supersolid via an intervening superfluid.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/36716]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Gan, JY. Effects of frustration on the anisotropic triangular lattice bosons[J]. PHYSICAL REVIEW B,2008,78(1).
APA	Gan, JY.(2008).Effects of frustration on the anisotropic triangular lattice bosons.PHYSICAL REVIEW B,78(1).
MLA	Gan, JY."Effects of frustration on the anisotropic triangular lattice bosons".PHYSICAL REVIEW B 78.1(2008).