Higgs mode in electric-field-induced superconductors

被引：1
|
作者：
Koyama, Tomio [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
PHYSICAL REVIEW B | 2014年 / 90卷 / 06期
关键词：
CHARGE-DENSITY WAVES; 2-BAND SUPERCONDUCTORS; ORDER-PARAMETER; INSULATOR;
D O I：
10.1103/PhysRevB.90.064514
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We develop a theory for the Higgs (gap-amplitude) mode excitation in electric-field-induced (EFI) superconductors. The Higgs mode can be excited directly by an oscillating electric field in EFI superconductors since the gap value depends sensitively on the external electric field that induces superconducting carriers. The mass of the Higgs mode in EFI superconductors does not coincide with the threshold energy of pair-breaking two-particle excitations.
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页数：7
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