Using high-resolution angle-resolved photoemission spectroscopy (ARPES). we examined the charge density wave (CDW) compound 1T-TaS2 as a function of the photon energy (energy range from 11 up to 33 eV) for both quasicommensurate (QC) and commensurate (C) CDW phases, While the QC-phase normal emission ARPES spectra coincide with previous results, normal emission spectra of the C phase reveal evidence for a fine structure in the CDW-induced features between 1 eV binding energy and the Fermi level. This fine structure may be explained by the subband manifold of the Ta 5d band, split off due to the CDW-induced root13 x root13 superstructure.
Pillo, T., Hayoz, J., Naumovic, D., Berger, H., Perfetti, L., Gavioli, L., Taleb Ibrahimi, A., Schlapbach, L., Aebi, P., Fine structure in high-resolution photoemission spectra of quasi-two-dimensional 1T-TaS2, <<PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS>>, 2001; 64 (24): 245105-245108. [doi:10.1103/PhysRevB.64.245105] [http://hdl.handle.net/10807/19937]
Fine structure in high-resolution photoemission spectra of quasi-two-dimensional 1T-TaS2
Gavioli, Luca;
2001
Abstract
Using high-resolution angle-resolved photoemission spectroscopy (ARPES). we examined the charge density wave (CDW) compound 1T-TaS2 as a function of the photon energy (energy range from 11 up to 33 eV) for both quasicommensurate (QC) and commensurate (C) CDW phases, While the QC-phase normal emission ARPES spectra coincide with previous results, normal emission spectra of the C phase reveal evidence for a fine structure in the CDW-induced features between 1 eV binding energy and the Fermi level. This fine structure may be explained by the subband manifold of the Ta 5d band, split off due to the CDW-induced root13 x root13 superstructure.
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