title: Ta 5d band symmetry of 1T-TaS1.2Se0.8 in the commensurate charge-density-wave phase.
abstract: We present a detailed angle-resolved photoemission study on the layered transition-metal dichalcogenide 1T-TaS1.2Se0.8 in the commensurate charge-density-wave (CDW) phase. A drastic reduction in the spectral weight along the high symmetry line GammaM, particularly around the point M, is observed when s-polarized light was used. This implies that the initial state must be symmetric with respect to a mirror plane perpendicular to the line GammaK, which is consistent with conventional band calculations in the absence of the CDW. We conclude that there is only a limited amount of modification of the electronic structure of 1T-TaS1.2Se0.8 in the commensurate CDW phase due to the CDW-related potential.
authors.affiliation: National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan. y.aiura@aist.go.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Aiura
authors.forename: I
authors.initials: I
authors.lastname: Hase
authors.forename: H
authors.initials: H
authors.lastname: Bando
authors.forename: K
authors.initials: K
authors.lastname: Yagi-Watanabe
authors.forename: K
authors.initials: K
authors.lastname: Ozawa
authors.forename: T
authors.initials: T
authors.lastname: Iwase
authors.forename: Y
authors.initials: Y
authors.lastname: Nishihara
authors.forename: O
authors.initials: O
authors.lastname: Shiino
authors.forename: M
authors.initials: M
authors.lastname: Oshima
authors.forename: M
authors.initials: M
authors.lastname: Kubota
authors.forename: K
authors.initials: K
authors.lastname: Ono