Structure of a vortex in the t-J model

Structure of a vortex in the t-J model
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t-J 模型中涡流的结构

DOI:
10.1103/physrevlett.85.1100
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发表时间:
2000
影响因子:
8.6
通讯作者:
Dung
Dung
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Jung Hoon Han;Dung

文献摘要

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在共振价键平均场理论下,我们研究了t-J模型的单涡解。根据模型的参数,我们发现了两种类型的涡核,绝缘涡核和金属涡核。两核附近的配对序参数具有d(x(2)-y(2))+ietad(Xy)对称性。在一定的t/J范围内,金属涡核的隧穿谱与BSCCO的STM隧穿数据定性地吻合。
We study the single-vortex solution of the t-J model within resonating-valence-bond mean-field theory. We find two types of vortex cores, insulating and metallic, depending on the parameters of the model. The pairing order parameter near both cores have d(x(2)-y(2))+ietad(xy) symmetry. For some range of t/J the calculated tunneling spectrum of the metallic vortex core agrees qualitatively with the STM tunneling data for BSCCO.