Competing order scenario of two-gap behavior in hole-doped cuprates

Permanent URL: http://hdl.handle.net/2047/d20000415
Title:
Competing order scenario of two-gap behavior in hole-doped cuprates
Creator:
Das, Tanmoy (Author)
Markiewicz, R. S. (Author)
Bansil, A. (Author)
Publisher:
January 01, 2008
Type of resource:
Text
Genre:
Texts
Format:
electronic
Digital origin:
born digital
Abstract/Description:
Angle-dependent studies of the gap function provide evidence for the coexistence of two distinct gaps in hole doped cuprates, where the gap near the nodal direction scales with the superconducting transition temperature Tc, while that in the antinodal direction scales with the pseudogap temperature. We present model calculations which show that most of the characteristic features observed in the recent angle-resolved photoemission spectroscopy (ARPES) as well as scanning tunneling microscopy (STM) two-gap studies are consistent with a scenario in which the pseudogap has a non-superconducting origin in a competing phase. Our analysis indicates that, near optimal doping, superconductivity can quench the competing order at low temperatures, and that some of the key differences observed between the STM and ARPES results can give insight into the superlattice symmetry of the competing order.
Comments:
Originally posted at http://arxiv.org/abs/0711.0480v2. Preprint of an article published in Physical Review B, v.77 no.13, 2008.
Subjects and keywords:
Superconductivity
Photoemission
gap function
hole doped cuprates
ARPES
STM
Physics
Permanent Link:
http://hdl.handle.net/2047/d20000415

Downloads