Abstract
The self-energy of the photohole in 2H-TaSe2 is measured by angle-resolved photoemission spectroscopy as a function of binding energy and temperature. In the charge-density wave (CDW) state, a structure in the self-energy is detected at approximately 65 meV that cannot 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
QuasiparticleCharge (physics)PhysicsComputer scienceAtomic physicsCondensed matter physicsQuantum mechanics
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Publication Info
- Year
- 2000
- Type
- article
- Volume
- 85
- Issue
- 22
- Pages
- 4759-4762
- Citations
- 91
- Access
- Closed
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Cite This
T. Valla,
А. В. Федоров,
P. D. Johnson
et al.
(2000).
Charge-Density-Wave-Induced Modifications to the Quasiparticle Self-Energy in 2H-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>TaSe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>.
Physical Review Letters
, 85
(22)
, 4759-4762.
https://doi.org/10.1103/physrevlett.85.4759
Identifiers
- DOI
- 10.1103/physrevlett.85.4759