Broken time-reversal symmetry in strongly correlated ladder structures -: art. no. 186401

被引:66
|
作者
Schollwöck, U
Chakravarty, S
Fjærestad, JO
Marston, JB
Troyer, M
机构
[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[3] Brown Univ, Dept Phys, Providence, RI 02912 USA
[4] ETH, CH-8093 Zurich, Switzerland
关键词
D O I
10.1103/PhysRevLett.90.186401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We provide, for the first time, in a doped strongly correlated system (two-leg ladder), a controlled theoretical demonstration of the existence of a state in which long-range ordered orbital currents are arranged in a staggered pattern, coexisting with a charge density wave. The method used is the highly accurate density-matrix renormalization group technique. This brings us closer to recent proposals that this order is realized in the enigmatic pseudogap phase of the cuprate high temperature superconductors.
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页数:4
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