Kondo screening in d-wave superconductors in a Zeeman field and implications for STM spectra of Zn-doped cuprates

Details Kondo screening in d-wave superconductors in a Zeeman field and implications for STM spectra of Zn-doped cuprates Kondo screening in d-wave superconductors in a Zeeman field and implications for STM spectra of Zn-doped cuprates

2002-02-21

arxiv.org/abs/cond-mat/0202359v3

Phys. Rev. B 66, 134527 (2002)

Physics

Condensed Matter

Superconductivity

5 pages, 4 figs, (v2) remark on c-axis field added, discussion extended, (v3) final version as published

Scientific paper

10.1103/PhysRevB.66.134527

We consider the screening of an impurity moment in a d-wave superconductor under the influence of a Zeeman magnetic field. Using the Numerical Renormalization Group technique, we investigate the resulting pseudogap Kondo problem, in particular the field-induced crossover behavior in the vicinity of the zero-field boundary quantum phase transition. The impurity spectral function and the resulting changes in the local host density of states are calculated, giving specific predictions for high-field STM measurements on impurity-doped cuprates.

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