Accession Number:

ADA526809

Title:

Pinpointing Gap Minima in Ba(Fe0:94Co0:06)2 via Band Structure Calculations and Electronic Raman Scattering

Descriptive Note:

Electronic preprint

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

2010-08-03

Pagination or Media Count:

6.0

Abstract:

A detailed knowledge of the gap structure for the Fe-pnictide superconductors is still rather rudimentary, with several conflicting reports of either nodes, deep gap minima, or fully isotropic gaps on the Fermi surface sheets, both in the kx-ky plane and along the c-axis. In this paper we present considerations for electronic Raman scattering which can help clarify the gap structure and topology using different light scattering geometries. Using density functional calculations for the Raman vertices, it is shown that the location of the gap minima may occur on loops stretching over a portion of the c-axis in BaFe0.94-Co0.062.

Subject Categories:

  • Electrical and Electronic Equipment
  • Numerical Mathematics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE