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

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • LaForge, AD; Padilla, WJ; Burch, KS; Li, ZQ; Schafgans, AA; Segawa, K; Ando, Y; Basov, DN

Published Date

  • August 29, 2008

Published In

Volume / Issue

  • 101 / 9

Start / End Page

  • 097008 -

PubMed ID

  • 18851646

Pubmed Central ID

  • 18851646

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.101.097008

Language

  • eng