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题名: Dynamical mass generation of composite Dirac fermions and fractional quantum Hall effects near charge neutrality in graphene
作者: Cai, F ;  Yu, Y ;  Wang, ZQ
刊名: JOURNAL OF PHYSICS-CONDENSED MATTER
出版日期: 2013
卷号: 25, 期号:30, 页码:305601
关键词: LANDAU-LEVEL ;  SUPERFLUID ;  BREAKING ;  SYSTEMS ;  STATES ;  FIELD
学科分类: Physics
通讯作者: Cai, F (reprint author), Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA.
部门归属: [Cai, Feng; Wang, Ziqiang] Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA; [Yu, Yue] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: We develop a composite Dirac fermion theory for the fractional quantum Hall effects (QHE) near charge neutrality in graphene. We show that the interactions between the composite Dirac fermions lead to a dynamical mass generation through exciton condensation. The four-fold spin-valley degeneracy is fully lifted due to the mass generation and exchange effects such that the odd-denominator fractional QHE observed in the vicinity of charge neutrality can be understood in terms of the integer QHE of composite Dirac fermions. At a filling factor nu = 1/2, we show that the massive composite Dirac fermion liquid is unstable against chiral p-wave pairing for weak Coulomb interactions and the ground state is a paired non-Abelian quantum Hall state described by the Moore-Read Pfaffian in the long wavelength limit.
资助者: DOE [DE-FG02-99ER45747]; NNSF of China; 973 program of MOST of China
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000321752800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15312
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Cai, F,Yu, Y,Wang, ZQ. Dynamical mass generation of composite Dirac fermions and fractional quantum Hall effects near charge neutrality in graphene[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2013,25(30):305601.
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