Stripes due to the next-nearest-neighbor exchange in high-T-c cuprates

Article

关键词: PHASE-SEPARATION;    COMPETITION;    DIAGRAM;    ORDER;    SPINS;    HOLES;   

DOI  :  10.1103/PhysRevB.63.140509

来源: SCIE

【 摘 要 】

We propose a possible mechanism of the charge stripe order due to the next-nearest-neighbor exchange interaction J' in the two-dimensional t-J model, based on the concept of the phase separation. We also calculate some hole correlation functions of the finite cluster of the model using the numerical diagonalization, to examine the realization of the mechanism. It is also found that the next-nearest-neighbor hopping t' suppresses the stripe order induced by the present mechanism for t'<0, while it enhances for t'>0.

【 授权许可】

Free