The coexisting state of the staggered flux and d-wave superconducting order in a t-J type model
The coexisting state of the staggered flux and d-wave superconducting order in a t-J type model
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t-J型模型中交错磁通与d波超导级的共存状态
DOI：
10.1088/1742-6596/1293/1/012026
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Ogata M
中科院分区：
文献类型：
--
作者：
Fukuda S;Yamazaki K;Tsuchiura H;Ogata M
本文利用基于Gutzwiller近似的具有附加最近邻库仑斥力V的t-J型模型的重整化平均场理论，研究了d波超导（dSC）和交错通量态共存相中的准粒子结构。我们发现这种共存态表现出相图中dSC的圆顶状行为和ARPES实验中发现的所谓双间隙结构，两者都与实验结果相当一致。
We study the quasiparticle structures in the coexisting phase of the d-wave superconductivity (dSC) and the staggered flux state using the renormalized mean-field theory for the t-J type model with additional nearest-neighbor Coulomb repulsion V, based on the Gutzwiller approximation. We find that this coexisting state exhibits the dome-like behavior of dSC in the phase diagram and also the so-called two-gap structure found in ARPES experiments, both of which are quite consistent with the experimental results.