Protected Nodes and the Collapse of Fermi Arcs in High-T_c Cuprate Superconductors

Thumbnail Image

Files

fac_RanderiaM_PhysicalReviewLetters_2007_99_15.pdf (273.24 KB)

Date

2007-10-08

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Research Projects

Organizational Units

Journal Issue

Abstract

Angle resolved photoemission on underdoped Bi_2Sr_2CaCu_2O_8 reveals that the magnitude and d-wave anisotropy of the superconducting state energy gap are independent of temperature all the way up to T_c. This lack of T variation of the entire k-dependent gap is in marked contrast to mean field theory. At T_c the point nodes of the d-wave gap abruptly expand into finite length "Fermi arcs." This change occurs within the width of the resistive transition, and thus the Fermi arcs are not simply thermally broadened nodes but rather a unique signature of the pseudogap phase.

Description

Keywords

Citation

A. Kanigel et al, "Protected Nodes and the Collapse of Fermi Arcs in High-T_c Cuprate Superconductors," Physical Review Letters 99, no. 15 (2007), doi:10.1103/PhysRevLett.99.157001

URI

http://hdl.handle.net/1811/48070

Collections

Ohio State University Research and Scholarship