Holographic model for the paramagnetism/antiferromagnetism phase transition

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	Holographic model for the paramagnetism/antiferromagnetism phase transition
	Cai, RG; Yang, RQ
刊名	PHYSICAL REVIEW D
	2015
卷号	91 期号:8 页码:86001
通讯作者	Cai, RG (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
英文摘要	In this paper we build a holographic model of paramagnetism/antiferromagnetism phase transition, which is realized by introducing two real antisymmetric tensor fields coupling to the background gauge field strength and interacting with each other in a dyonic black brane background. In the case without an external magnetic field and in low temperatures, the magnetic moments condense spontaneously in an antiparallel manner with the same magnitude and the time reversal symmetry is also broken spontaneously (if the boundary spatial dimension is more than 2, spatial rotational symmetry is broken spontaneously as well), which leads to an antiferromagnetic phase. In the case with the weak external magnetic field, the magnetic susceptibility density has a peak at the critical temperature and satisfies the Curie-Weiss law in the paramagnetic phase of antiferromagnetism. In the strong external magnetic field case, there is a critical magnetic field B-c in the antiferromagnetic phase: when the magnetic field reaches Bc, the system will return into the paramagnetic phase by a second order phase transition.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	SUPERCONDUCTIVITY ; FERROMAGNETISM ; ANTIFERROMAGNETISM
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21042]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Cai, RG,Yang, RQ. Holographic model for the paramagnetism/antiferromagnetism phase transition[J]. PHYSICAL REVIEW D,2015,91(8):86001.
APA	Cai, RG,&Yang, RQ.(2015).Holographic model for the paramagnetism/antiferromagnetism phase transition.PHYSICAL REVIEW D,91(8),86001.
MLA	Cai, RG,et al."Holographic model for the paramagnetism/antiferromagnetism phase transition".PHYSICAL REVIEW D 91.8(2015):86001.