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Interlayer coherence and superconducting condensate in the c-axis response of optimally doped Ba(Fe(1-x)Co(x))2As2 high-T(c) superconductor using infrared spectroscopy.

Authors
  • Moon, S J1
  • Schafgans, A A
  • Tanatar, M A
  • Prozorov, R
  • Thaler, A
  • Canfield, P C
  • Sefat, A S
  • Mandrus, D
  • Basov, D N
  • 1 Department of Physics, University of California, San Diego, La Jolla, California 92093, USA.
Type
Published Article
Journal
Physical Review Letters
Publisher
American Physical Society
Publication Date
Mar 01, 2013
Volume
110
Issue
9
Pages
97003–97003
Identifiers
PMID: 23496739
Source
Medline
License
Unknown

Abstract

We report on the infrared studies of the interlayer charge dynamics of a prototypical pnictide superconductor Ba(Fe(0.926)Co(0.074))(2)As(2). We succeeded in probing the intrinsic interlayer response by performing infrared experiments on the crystals with a cleaved ac surface. Our experiments identify the coexistence of the suppression of the electronic spectral weight and the development of a coherent Drude-like response in the normal state. The formation of the interlayer condensate is clearly observed in the superconducting state and appears to be linked to coherent contribution to the normal-state conductivity.

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