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题名: d-wave superconductivity induced by short-range antiferromagnetic correlations in the two-dimensional Kondo lattice model
作者: Liu, Y ;  Li, H ;  Zhang, GM ;  Yu, L
刊名: PHYSICAL REVIEW B
出版日期: 2012
卷号: 86, 期号:2, 页码:24526
关键词: QUANTUM PHASE-TRANSITIONS ;  FERMI-LIQUID ;  SPIN LIQUID ;  HEAVY ;  ELECTRON ;  INSTABILITY ;  EXPANSION ;  SYSTEMS ;  DIAGRAM ;  METALS
学科分类: Physics
通讯作者: Liu, Y (reprint author), Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China.
部门归属: [Liu, Yu; Li, Huan; Zhang, Guang-Ming] Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China; [Liu, Yu; Li, Huan; Zhang, Guang-Ming] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Yu, Lu] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; [Yu, Lu] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: The possible heavy fermion superconductivity is carefully reexamined in the two-dimensional Kondo lattice model with an antiferromagnetic Heisenberg superexchange between local magnetic moments. To establish an effective mean field theory in the limit of paramagnetic heavy Fermi liquid and near the half-filling case, we find that the spinon singlet pairing from the local antiferromagnetic short-range correlations can reduce the ground state energy substantially. In the presence of the Kondo screening effect, the Cooper pairs between the conduction electrons are induced. Depending on the ratio of the Heisenberg and the Kondo exchange couplings, the resulting superconducting state is characterized by either a d-wave nodal or d-wave nodeless state, and a continuous phase transition exists between these two states. These results are related to some quasi-two-dimensional heavy fermion superconductors.
资助者: NSF of China; National Program for Basic Research of MOST-China
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000306923400011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15057
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Liu, Y,Li, H,Zhang, GM,et al. d-wave superconductivity induced by short-range antiferromagnetic correlations in the two-dimensional Kondo lattice model[J]. PHYSICAL REVIEW B,2012,86(2):24526.
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