Spectroscopic Signatures on Increase in Charge-Density-Wave Potential of 1\em T-TaS_1.2Se_0.8

2003/10/27 by Y. Aiura, Aiura, Y., I. Hase +27
Chemistry · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Inorganic Chemistry and Materials #Organic and Molecular Conductors Research #Solid-state spectroscopy and crystallography #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0310614

5 pages, 4 figures

arxiv created 2003/10/27 · openalex publication_date 2003/10/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present an angle-resolved photoemission (ARPES) study on the layered transition-metal dichalcogenide 1\em T-TaS_1.2Se_0.8 in the metallic commensurate charge-density-wave (CDW) phase. A model calculation of the spectral function captures the main features of the ARPES spectra well qualitatively, that is, the gross splits of unreconstructed band structure in the absence of the CDW superlattice. The observed enhancement of the size of the gap between the lower and middle fragments of the Ta \em 5d band along the ΓM line by cooling is interpreted in terms of the increase in the CDW-related potential.

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