Angle-resolved photoemission spectra in one-dimensional Hubbard-Holstein model

作     者：SUN Peijian HUAI Ping ZHANG Wei CHENG Cheng ZHU Zhiyuan 

作者机构：Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China Graduate University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2011年第22卷第5期

页      面：299-303页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 07[理学] 08[工学] 070204[理学-等离子体物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：Supported by National Basic Research Program of China Grant No.2010CB934504 National Natural Science Foundation of China Grant Nos.10874197, 10905040 the CAS Hundred Talents Program 

主　　题：角分辨光电子能谱 一维模型 库仑相互作用 声子耦合 一维系统 平均场理论 电荷密度波 模拟方法 

摘      要：In order to understand the effects of electron-phonon coupling and Coulomb interactions in angle-resolved photoemission spectroscopy(ARPES),a spin-1/2 Hubbard-Holstein model at half-filling is theoretically investigated by means of the mean field theory and classical Monte Carlo simulation *** shows that the spectral shape of the one-dimensional system is significantly modified by the electron-phonon coupling and Coulomb *** suppression of charge-density wave in one-dimensional system has been ascribed to the short-range Coulomb repulsion and thermal lattice *** competition between these interactions can induce zero energy gaps in APPES as well as complete cancellation of charge or spin ordering.