Incoherent Bragg reflection and Fermi-surface hot spots in a quasi-two-dimensional metal

Authors

I. Mihut, Clark University
C. C. Agosta, Clark UniversityFollow
C. Martin, Clark University
C. H. Mielke, National High Magnetic Field Laboratory Los Almos
T. Coffey, National High Magnetic Field Laboratory Los Almos
M. Tokumoto, National Institute of Advanced Industrial Science and Technology
M. Kurmoo, The Royal Institution of Great Britain
J. A. Schlueter, Argonne National Laboratory
P. Goddard, National High Magnetic Field Laboratory Los Almos
N. Harrison, National High Magnetic Field Laboratory Los Almos

Document Type

Article

Abstract

We propose a mechanism whereby a finite correlation length associated with the periodicity of the crystalline lattice gives rise to incoherent Bragg reflection of quasiparticles. This introduces an additional effective scattering rate τhot -1 [kF] that selectively damps quantum oscillations originating from orbits that are the product of Bragg reflection. The model is applied to the dimerization in κ- (BEDT-TTF)2 Cu (NCS)2 where we show that τhot -1 [kF] is strongly dependent on the Fermi momentum kF, being concentrated at "hot spots" located on the Brillouin zone boundary. © 2006 The American Physical Society.

Publication Title

Physical Review B - Condensed Matter and Materials Physics

Publication Date

4-4-2006

Volume

73

Issue

12

ISSN

1098-0121

DOI

10.1103/PhysRevB.73.125118

Keywords

Bragg reflection, Fermi, quasiparticles

Repository Citation

Mihut, I.; Agosta, C. C.; Martin, C.; Mielke, C. H.; Coffey, T.; Tokumoto, M.; Kurmoo, M.; Schlueter, J. A.; Goddard, P.; and Harrison, N., "Incoherent Bragg reflection and Fermi-surface hot spots in a quasi-two-dimensional metal" (2006). Physics. 30.
https://commons.clarku.edu/faculty_physics/30

Cross Post Location

Student Publications