Crossover from Quarter-Filling to Half-Filling in a One-Dimensional Electron System with a Dimerized and Quarter-Filled Band
作者： Masahisa Tsuchiizu , Hideo Yoshioka , Yoshikazu Suzumura
DOI: 10.1143/JPSJ.70.1460
关键词:
摘要: The interplay between quarter-filled and half-filled umklapp scattering has been examined by applying the renormalization group method to a one-dimensional electron system with dimerization, on-site ( U ) nearest-neighbor V repulsive interactions. phase diagram on - plane is obtained at absolute zero temperature where Mott insulator (the charge ordered insulator) found for smaller (larger) . By choosing moderate parameter in region of insulator, it shown that resistivity exhibits crossover from behavior quarter-filling half-filling decreasing temperature.
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