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Abstract <p>One of the scenarios of high-temperature superconductivity is based on spin-polar pairing. The theory of the spin polaron is based on the properties of a 2D magnet. A common algorithm for investigating these properties is a spherically symmetric approach that preserves the constraints of exact theorems. The present paper provides a concise overview of some of the outcomes of the spherical approach with a focus on the stability of a self-consistent solution. The last section presents a model that does not allow for a stable solution, and discusses possible ways to overcome the problem.</p>

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On the Stability of a Spherically Symmetric Solution for a Two-Dimensional Magnet

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. V. Mikheyenkov,
  • P. S. Savchenkov

摘要

Abstract

One of the scenarios of high-temperature superconductivity is based on spin-polar pairing. The theory of the spin polaron is based on the properties of a 2D magnet. A common algorithm for investigating these properties is a spherically symmetric approach that preserves the constraints of exact theorems. The present paper provides a concise overview of some of the outcomes of the spherical approach with a focus on the stability of a self-consistent solution. The last section presents a model that does not allow for a stable solution, and discusses possible ways to overcome the problem.