Orbital‐selective Mott transitions in the 2‐band J z ‐model: a high‐precision quantum Monte Carlo study
Orbital‐selective Mott transitions in the 2‐band J z ‐model: a high‐precision quantum Monte Carlo study
复制标题
2 带 J z 模型中的轨道选择性莫特跃迁:高精度量子蒙特卡罗研究
DOI:
10.1002/pssb.200562449
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
N. Blümer
中科院分区:
文献类型:
--
作者:
P. van Dongen;C. Knecht;N. Blümer
Using high‐precision quantum Monte Carlo (QMC) simulations within the framework of dynamical mean field theory (DMFT), we show that the anisotropic degenerate two‐orbital Hubbard model contains two consecutive orbital‐selective Mott transitions (OSMTs) even in the absence of spin‐flip terms and pair‐hopping processes. In order to reveal the second transition we carefully analyze the low‐frequency part of the self‐energy and the local spectral functions. This paper extends our previous work to lower temperatures. We discuss the nature – in particular the order – of both Mott transitions and list various possible extensions. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
影响因子:
8.6
作者:
Nakatsuji, S;Maeno, Y
通讯作者:
Maeno, Y