Impurities and quantum interference in the chains of YBa2Cu3O6+x -: art. no. 067005

被引：21
|
作者：
Morr, DK [1 ]
Balatsky, AV
机构：
[1] Univ Illinois, Dept Phys, Chicago, IL 60607 USA
[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.90.067005
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Motivated by recent experiments, we study the electronic structure near impurities in the chains of YBa2Cu3O6+x. Using a model of proximity induced chain superconductivity, we show that a resonance state in the chain density of states is induced only by a magnetic impurity. The spatial form of the resonance reflects the particle-hole nature of chain superconductivity and therefore distinguishes it from other broken symmetry phases. Because of quantum interference effects between impurities, the chains can undergo a quantum phase transition into a polarized state.
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页数：4
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