Sum rules and interlayer infrared response of the high temperature YBa2Cu3Oy superconductor in an external magnetic field

被引：17

作者：

LaForge, A. D. ^{[1
]}

Padilla, W. J. ^{[1
]}

Burch, K. S. ^{[1
]}

Li, Z. Q. ^{[1
]}

Schafgans, A. A. ^{[1
]}

Segawa, Kouji ^{[2
,3
]}

Ando, Yoichi ^{[3
]}

Basov, D. N. ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Cent Res Inst Elect Power Ind, Tokyo 2018511, Japan

[3] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 09期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.101.097008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present infrared magneto-optical measurements of the c-axis conductivity of YBa2Cu3Oy in both the underdoped (y = 6.67 and 6.75) and optimally doped (y = 6.95) regimes. We show that modest c-axis magnetic fields radically modify the condensate formation and restore conventional BCS-like energetics. Additionally, we demonstrate the pivotal role of interplane coherence in the anomalous high-energy contribution to the superfluid density.

引用

页数：4

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