Ground State Properties and Localized Excited States aroud a Magnetic Impurity Described by the Anisotropic s-d Interaction in Supercondustivity
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We investigate the electronic state around a magnetic irnptrrity in the strperconductivity inorder to clarify how the anisotropy of the s-d interaction works in the presence of the strperconducting energy gap. Using the ntrrnerical renornnalization grotrp nuethod, we obtain regionsinduced by the anisotropy where txvo localized excited states with different energies appear atthe same tinae; tlaey cannot obtain as far as the isotropic interaction is considered. This meansthat the anisotropy of' the s-d interarction works reJevantJy in some cases in the supercondttctingstate. We also exataaine whether or not the bound state energy for the anisotropic and antiferro-magnetic s-d interaction is scaled by V'K / ,A (TK : Kondo ternperature, ,A : supercondtmcting orderparanaeter), and find that it does not hold in the regions with two bound states.
- 社団法人日本物理学会の論文
- 1998-04-15
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