MOMENTUM-DEPENDENT SPECTRAL CHANGES INDUCED BY THE CHARGE-DENSITY-WAVE IN 2H-TASE2 AND THE IMPLICATION ON THE CDW MECHANISM

Authors
LIU R OLSON CG TONJES WC FRINDT RF
Citation
R. Liu et al., MOMENTUM-DEPENDENT SPECTRAL CHANGES INDUCED BY THE CHARGE-DENSITY-WAVE IN 2H-TASE2 AND THE IMPLICATION ON THE CDW MECHANISM, Physical review letters, 80(26), 1998, pp. 5762-5765
Citations number
9
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
26
Year of publication
1998
Pages
5762 - 5765
Database
ISI
SICI code
0031-9007(1998)80:26<5762:MSCIBT>2.0.ZU;2-D
Abstract
We report a high energy and high angular resolution angle resolved pho toemission study of 2H-TaSe2 at temperatures both above and below the charge-density-wave (CDW) transition. In the normal state, an extended saddle band very close to the Fermi energy was observed. The CDW-indu ced energy gap is near zero on a well defined Fermi surface and large in the extended saddle band region. The implication of these results o n the CDW mechanism is discussed.