TY - JOUR
T1 - High-resolution angle-resolved photoemission study of incommensurate charge-density-wave compound CeTe3
AU - Komoda, H.
AU - Sato, T.
AU - Souma, S.
AU - Takahashi, T.
AU - Ito, Y.
AU - Suzuki, K.
N1 - Funding Information:
We thank H. Komatsu and T. Dobashi for their help in the experiment. This work is supported by a grant from the MEXT of Japan. S.S. thanks JSPS for financial support.
PY - 2004/11
Y1 - 2004/11
N2 - High-resolution angle-resolved photoemission spectroscopy (ARPES) has been performed on layered cerium trichalcogenide CeTe3 to study the incommensurate charge-density-wave (CDW) mechanism. We found that ARPES spectra near the Fermi level along the superlattice direction (ΓY direction) show existence of multiple shadow bands due to the CDW formation, while those along the ΓX direction perpendicular to ΓY do not show such a band folding. The energy dispersion of shadow bands is understood in terms of the momentum transfer due to the periodic lattice distortion vector. The observed sizable CDW gap amplitude (>250 meV) around Y point is in accordance with the observation of higher order shadow bands.
AB - High-resolution angle-resolved photoemission spectroscopy (ARPES) has been performed on layered cerium trichalcogenide CeTe3 to study the incommensurate charge-density-wave (CDW) mechanism. We found that ARPES spectra near the Fermi level along the superlattice direction (ΓY direction) show existence of multiple shadow bands due to the CDW formation, while those along the ΓX direction perpendicular to ΓY do not show such a band folding. The energy dispersion of shadow bands is understood in terms of the momentum transfer due to the periodic lattice distortion vector. The observed sizable CDW gap amplitude (>250 meV) around Y point is in accordance with the observation of higher order shadow bands.
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U2 - 10.1103/PhysRevB.70.195101
DO - 10.1103/PhysRevB.70.195101
M3 - Article
AN - SCOPUS:12344262575
SN - 0163-1829
VL - 70
SP - 1
EP - 6
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 19
M1 - 195101
ER -