Long-range order and pinning of charge-density waves in competition with superconductivity

被引：25

作者：

Caplan, Yosef ^{[1
]}

Wachtel, Gideon ^{[1
,2
]}

Orgad, Dror ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 22期

基金：

以色列科学基金会;

关键词：

QUANTUM OSCILLATIONS; FERMI-SURFACE; MAGNETIC-FIELD; STRIPE ORDER; STATE; FLUCTUATIONS; INSTABILITY; PSEUDOGAP; TRANSPORT; SYMMETRY;

D O I：

10.1103/PhysRevB.92.224504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent experiments show that charge-density-wave correlations are prevalent in underdoped cuprate superconductors. The correlations are short ranged at weak magnetic fields but their intensity and spatial extent increase rapidly at low temperatures beyond a crossover field. Here we consider the possibility of long-range charge-density-wave order in a model of a layered system where such order competes with superconductivity. We show that in the clean limit, low-temperature long-range order is stabilized by arbitrarily weak magnetic fields. This apparent discrepancy with the experiments is resolved by the presence of disorder. Like the field, disorder nucleates halos of charge-density wave, but unlike the former it also disrupts interhalo coherence, leading to a correlation length that is always finite. Our results are compatible with various experimental trends, including the onset of longer range correlations induced by interlayer coupling above a characteristic field scale.

引用

页数：12

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