Higgs criticality in a two-dimensional metal

被引：29
作者：
Chowdhury, Debanjan [1 ]
Sachdev, Subir [1 ,2 ]
机构：
[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[2] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada
来源：
PHYSICAL REVIEW B | 2015年 / 91卷 / 11期
基金：
美国国家科学基金会;
关键词：
FERMI-SURFACE; QUANTUM OSCILLATIONS; CRITICAL-POINTS; DENSITY-WAVE; CHARGE ORDER; TEMPERATURE; PHASE; PSEUDOGAP; TL2BA2CUO6+DELTA; COMPETITION;
D O I：
10.1103/PhysRevB.91.115123
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We analyze a candidate theory for the strange metal near optimal hole doping in the cuprate superconductors. The theory contains a quantum phase transition between metals with large and small Fermi surfaces of spinless fermions carrying the electromagnetic charge of the electron, but the transition does not directly involve any broken global symmetries. The two metals have emergent SU(2) and U(1) gauge fields respectively, and the transition is driven by the condensation of a real Higgs field, carrying a finite lattice momentum and an adjoint SU(2) gauge charge. This Higgs field measures the local antiferromagnetic correlations in a "rotating reference frame." We propose a global phase diagram around this Higgs transition, and describe its relationship to a variety of recent experiments on the cuprate superconductors.
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页数：13
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