Finite-temperature Mott transitions in the multiorbital Hubbard model

被引：50
|
作者：
Inaba, K [1 ]
Koga, A [1 ]
Suga, S [1 ]
Kawakami, N [1 ]
机构：
[1] Osaka Univ, Dept Appl Phys, Suita, Osaka 5650871, Japan
来源：
PHYSICAL REVIEW B | 2005年 / 72卷 / 08期
关键词：
D O I：
10.1103/PhysRevB.72.085112
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate the Mott transitions in the multiorbital Hubbard model at half-filling by means of the self-energy functional approach. The phase diagrams are obtained at finite temperatures for the Hubbard model with up to fourfold degenerate bands. We discuss how the first-order Mott transition points U-c1 and U-c2 as well as the critical temperature T-c depend on the orbital degeneracy. It is elucidated that enhanced orbital fluctuations play a key role to control the Mott transitions in the multiorbital Hubbard model.
引用
收藏
页数：7
相关论文
共 50 条
  • [1] Finite-temperature phase transitions in the ionic Hubbard model
    Kim, Aaram J.
    Choi, M. Y.
    Jeon, Gun Sang
    PHYSICAL REVIEW B, 2014, 89 (16):
  • [2] Finite-temperature Mott transition in the two-dimensional Hubbard model
    Onoda, S.
    Imada, M.
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 : E275 - E276
  • [3] Finite-temperature dynamics of the Mott insulating Hubbard chain
    Nocera, Alberto
    Essler, Fabian H. L.
    Feiguin, Adrian E.
    PHYSICAL REVIEW B, 2018, 97 (04)
  • [4] Finite-temperature phase transitions in the SU(N) Hubbard model
    Yanatori, Hiromasa
    Koga, Akihisa
    PHYSICAL REVIEW B, 2016, 94 (04)
  • [5] Single Mott transition in the multiorbital Hubbard model
    Liebsch, A
    PHYSICAL REVIEW B, 2004, 70 (16): : 1 - 8
  • [6] Finite-temperature phase transitions in a two-dimensional boson Hubbard model
    Cha, Min-Chul
    Lee, Ji-Woo
    PHYSICAL REVIEW LETTERS, 2007, 98 (26)
  • [7] Finite-temperature phase diagram of the Hubbard model
    G. Migliorini
    A. Nihat Berker
    The European Physical Journal B - Condensed Matter and Complex Systems, 2000, 17 : 3 - 6
  • [8] Finite-temperature phase diagram of the Hubbard model
    Migliorini, G
    Berker, AN
    EUROPEAN PHYSICAL JOURNAL B, 2000, 17 (01): : 3 - 6
  • [9] FINITE-TEMPERATURE MAGNETISM IN THE HUBBARD-MODEL
    SZCZECH, YH
    TUSCH, MA
    LOGAN, DE
    PHYSICAL REVIEW LETTERS, 1995, 74 (14) : 2804 - 2807
  • [10] Finite-temperature superconducting correlations of the Hubbard model
    Khatami, Ehsan
    Scalettar, Richard T.
    Singh, Rajiv R. P.
    PHYSICAL REVIEW B, 2015, 91 (24):
12345