Charge-Density-Wave induced modifications to the quasiparticle self-energy in 2H TaSe2

Preprint

1 November 2000

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0005477

Abstract

The self-energy of the photo-hole in 2H-TaSe2 is measured by angle-resolved photoemission spectroscopy (ARPES) as a function of binding energy and temperature. In the charge-density wave (CDW) state, a structure in the self- energy is detected at ~ 65 meV that can not be explained by electron-phonon scattering. A reduction in the scattering rates below this energy indicates the collapse of a major scattering channel with the formation of the CDW state, accompanying the appearance of a bosonic "mode" in the excitation spectrum of the system.

Keywords

SPECTRUM OF THE SYSTEM
CHARGE DENSITY WAVE
ENERGY IS DETECTED
ENERGY INDICATES
DENSITY WAVE
SCATTERING
2H TASE2
PHONON
TASE2

All Related Versions

Version 1, 2000-05-26, ArXiv
Version 2, 2000-11-01, ArXiv
Published version: Physical Review Letters, 85 (22), 4759.

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