Influence of Chiral Surface States on the London Penetration Depth in Sr_2RuO_4 : Condensed Matter: Electronic Properties, etc.

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概要

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• The London penetration depth for the unconventional Superconductor Sr_2RuO_4 is analyzed assuming an order parameter which breaks time-reversal symmetry and parity simultaneously. Such a superconductor possesses gapless chiral quasiparticle states at the surface. We show that these subgap states contribute significantly to the low-temperature behavior of the London penetration depth, yielding a T^2 power law even though bulk quasiparticle spectrum is gapped. The presence of several electron bands gives rise to interband transition among the subgap Surface states and influences the properties of the surface impedance. The surface states also lead to a nonlinear Meissner effect.

• 社団法人日本物理学会の論文
• 2000-08-15

著者

• Morinari Takao

  Yukawa Institute For Theoretical Physics Kyoto University

• Sigrist M

  Eth‐hoenggerberg Zuerich Che

• Sigrist Manfred

  Department Of Physics Massachusetts Institute Of Technology

• Sigrist Manfred

  Yukawa Institute For Theoretical Physics Kyoto University

• Morinari T

  Kyoto Univ. Kyoto Jpn

• Sigrist Manfred

  Yukawa Institute For Theoretical Phyasics Kyoto University

• Sigrist Manfred

  Yukawa Institute for Theoretical Physics, Kyoto University

• SIGRIST Manfred

  Yukawa Institute for Theoretical Phyasics, Kyoto University

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