TY - JOUR
T1 - Dual nature of a charge-density-wave transition on In/Cu(001)
AU - Nakagawa, T.
AU - Okuyama, H.
AU - Nishijima, M.
AU - Aruga, T.
AU - Yeom, H. W.
AU - Rotenberg, E.
AU - Krenzer, B.
AU - Kevan, S. D.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/6/10
Y1 - 2003/6/10
N2 - A surface phase transition on In/Cu(001) with In coverage of 0.63 was studied. The structural analysis shows that the reversible phase transition at 405 K between the high-temperature (2 × 2) and the low-temperature (Formula presented) phases belongs to an order-disorder type. The angle-resolved photoemission experiment shows that the low-temperature phase is stabilized by the partial gap formation at the Fermi surface, indicating that the transition is due to the Peierls-type Fermi-surface nesting. While the above observations point to a strong-coupling charge-density-wave (SCDW) scenario, the temperature-dependent behavior of the gap is in better agreement with the weak-coupling CDW theory. Thus, the results serve the first experimental characterization of the CDW transition driven cooperatively by electronic and lattice entropies.
AB - A surface phase transition on In/Cu(001) with In coverage of 0.63 was studied. The structural analysis shows that the reversible phase transition at 405 K between the high-temperature (2 × 2) and the low-temperature (Formula presented) phases belongs to an order-disorder type. The angle-resolved photoemission experiment shows that the low-temperature phase is stabilized by the partial gap formation at the Fermi surface, indicating that the transition is due to the Peierls-type Fermi-surface nesting. While the above observations point to a strong-coupling charge-density-wave (SCDW) scenario, the temperature-dependent behavior of the gap is in better agreement with the weak-coupling CDW theory. Thus, the results serve the first experimental characterization of the CDW transition driven cooperatively by electronic and lattice entropies.
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U2 - 10.1103/PhysRevB.67.241401
DO - 10.1103/PhysRevB.67.241401
M3 - Article
AN - SCOPUS:0043030125
SN - 1098-0121
VL - 67
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 24
ER -