Spin-12magnetic impurity in a two-dimensional magnetic system close to a quantum critical point

2000/04/05 by O. P. Sushkov · 6 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.dis-nn #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.62.12135

9 pages, 9 figures

arxiv created 2000/04/05 · openalex publication_date 2000/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We consider a magnetic impurity in a spin liquid state of a magnetic system which is close to the quantum phase transition to the magnetically ordered state. There is similarity between this problem and the Kondo problem. We derive the impurity Green's function, consider renormalizations of the magnetic moments of the impurity, calculate critical indexes for the magnetic susceptibilities, and finally consider specific heat and magnetic interaction of two impurities.

Citations

• Low Temperature Properties of the Double Layer Quantum Heisenberg Antiferromagnet -Modified Spin Wave Method-

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