Spin-wave calculation of the field-dependent magnetization pattern around an impurity in Heisenberg antiferromagnets

Article

关键词: SCANNING-TUNNELING-MICROSCOPY;    CONSEQUENCES;    CHAINS;    STATES;   

DOI  :  10.1103/PhysRevB.83.054423

来源: SCIE

【 摘 要 】

We consider the magnetic-field-dependent spatial magnetization pattern around a general impurity embedded in a Heisenberg antiferromagnet using both an analytical and a numerical spin-wave approach. The results are compared to quantum Monte Carlo simulations. The decay of the magnetization pattern away from the impurity follows a universal form which reflects the properties of the pure antiferromagnetic Heisenberg model. Only the overall magnitude of the induced magnetization depends also on the size of the impurity spin and the impurity coupling.

【 授权许可】

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