Dual nature of a charge-density-wave transition on In/Cu(001)

T. Nakagawa, H. Okuyama, M. Nishijima, T. Aruga, H. W. Yeom, E. Rotenberg, B. Krenzer, S. D. Kevan

研究成果: ジャーナルへの寄稿学術誌査読

21 被引用数 (Scopus)


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.

ジャーナルPhysical Review B - Condensed Matter and Materials Physics
出版ステータス出版済み - 6月 10 2003

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学


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