Spectroscopic observation of charge-density-wave-induced changes in the electronic structure of 2H-TaSe2
- 16 August 1993
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 5 (33) , 6111-6119
- https://doi.org/10.1088/0953-8984/5/33/020
Abstract
The authors have performed a high-energy-resolution photoelectron spectroscopy investigation of the quasi-two-dimensional material 2H-TaSe2. Temperature-dependent constant-binding energy curves reveal that characteristic changes in the electronic density of states occur continuously through the second-order charge-density-wave (CDW) transition at 122 K. The photoelectron spectra indicate that different parts of the Fermi surface are unequally affected by the CDW and suggest the formation of an energy gap in the Gamma K direction of the Brillouin zone.Keywords
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