Analysis of Impurity-Induced Circular Currents for the Chiral Superconductor Sr_2RuO_4

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概要

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• The nnicroscopic tnechatnisra? of' cir'ctrlsrr ctrrrents indtrced in the vicinity of a non-naagrneticinuptrrit)' is analyzed for the (tiraae-rex'ersstl sytaanaetry breaking) clairal strpercondtrcting stated(k) ::: ink. i iA.) xvl?ich is ver'y likely re?x1ized in Sr3RtrO.j. Frotaa the analytic, not selfconsisterat soltztiorn of' tlae Bogolitnbov-de Gennes eqtr?xtions xve find txx'o types of' qtrasiparticlestates, 21 lcotrnd state and tlxe contir?v.rtttaa state. Tlarough itaujctrrity scattering the condensatetransfers angttlar ttaouaaenttrraa to the qtrasip?trtic1e states which gerterate a circtrlar ctrrrent. Atlow tertaperattrre the contintntrtta patrt of' the qtratsijcarticle spectrtruaa gixzes the taaain contribtrtion.The non-selfconsistent soltrtion yields a st;tie of' finite aragtrlar uaaornenttrtaa. The conaparison xvithClue correspondit?g Ginzbttrg-Landattr theory rexxeatls the existence of' a conaapetasating cotrnterfloxvcreated by the strpercondtrcting condensate. Tlae ctrr'rents and uaaagrtetic fields stjope?tring arotrndthe itnpurity laave possibly been obser'ved l.>y IIILIOII spin re1?txation nmeastrretaaents.

• 社団法人日本物理学会の論文
• 1999-09-15

著者

• Sigrist Manfred

  Yukawa Institute For Theoretical Physics Kyoto University

• MATSUMOTO Masashige

  Department of Physics, Shizuoka University

• Matsumoto Masashige

  Department Of Physics Faculty Of Science Shizuoka University

• OKUNO Yukihiro

  Yukawa Institute for Theoretical Physics,Kyoto University

• Okuno Yukihiro

  Yukawa Institute For Theoretical Physics Kyoto University

• Sigrist Manfred

  Yukawa Institute For Theoretical Phyasics Kyoto University

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