Electronic spectrum and superconductivity in the t-J model on the honeycomb lattice

被引：0
|
作者：
Plakida, N. M. [1 ]
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Russia
来源：
CONDENSED MATTER PHYSICS | 2018年 / 21卷 / 03期
关键词：
strong electron correlations; t-J model; honeycomb lattice; superconductivity;
D O I：
10.5488/CMP.21.33706
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A microscopic theory of electronic spectrum and superconductivity within the t-J model on the honeycomb lattice is formulated. The Dyson equation for the normal and anomalous Green functions for the two-band model in terms of the Hubbard operators is derived by applying the Mori-type projection technique. The self-energy is evaluated in the self-consistent Born approximation for electron scattering on spin and charge fluctuations induced by the kinematical interaction for the Hubbard operators. Superconducting pairing mediated by the antiferromagnetic exchange and spin fluctuations is discussed.
引用
收藏
页数：11
相关论文
共 50 条
  • [1] Phase diagram of the t-J model on a honeycomb lattice
    Kadolkar, CY
    Basu, S
    PHYSICAL REVIEW B, 2006, 73 (10)
  • [2] Competing orders in the honeycomb lattice t-J model
    Xu, Zheng-Tao
    Gu, Zheng-Cheng
    Yang, Shuo
    PHYSICAL REVIEW B, 2023, 108 (03)
  • [3] Spin excitations and thermodynamics of the t-J model on the honeycomb lattice
    Artem A. Vladimirov
    Dieter Ihle
    Nikolay M. Plakida
    The European Physical Journal B, 2018, 91
  • [4] Spin excitations and thermodynamics of the t-J model on the honeycomb lattice
    Vladimirov, Artem A.
    Ihle, Dieter
    Plakida, Nikolay M.
    EUROPEAN PHYSICAL JOURNAL B, 2018, 91 (08):
  • [5] Electron spectrum and superconductivity in the t-J model at moderate doping
    Plakida, NM
    Oudovenko, VS
    PHYSICAL REVIEW B, 1999, 59 (18) : 11949 - 11961
  • [6] Single-hole properties of the t-J model on the honeycomb lattice
    Lüscher, A
    Läuchli, A
    Zheng, WH
    Sushkov, OP
    PHYSICAL REVIEW B, 2006, 73 (15):
  • [7] Coexistence of antiferromagnetism and superconductivity of t-t′-J model on honeycomb lattice
    Zhong, Yin
    Zhang, Lan
    Lu, Han-Tao
    Luo, Hong-Gang
    PHYSICA B-CONDENSED MATTER, 2015, 462 : 1 - 7
  • [8] Pseudogap and superconductivity in the t-J model
    Ramsak, A
    Prelovsek, P
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2004, 408 : 279 - 280
  • [9] MAGNETISM AND SUPERCONDUCTIVITY IN THE T-J MODEL
    OHKAWA, FJ
    PHYSICAL REVIEW B, 1990, 42 (07): : 4163 - 4174
  • [10] On a spectrum of the t-J model on a deformed lattice "necklace ladder"
    Cheranovskii, V. O.
    Ezerskaya, E. V.
    Kravchenko, A. A.
    LOW TEMPERATURE PHYSICS, 2012, 38 (06) : 473 - 480
12345