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Chemical potential evidence for phase transitions in Fermi systems

机译:费米系统中相变的化学势证据

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摘要

We apply the generalized s-f model with intersiteCooper pairing to magnetic and superconducting alloys to showthat all phase transitions (temperature, pressure and concentrationdriven) can be detected either from the chemical potential criticalbehaviour or from the average occupation numbers (criticalelectron redistribution) of the electronic system. As evidence forphase transitions these quantities exhibit small (of about 1O-4 -1O-3) but well localized kinks at all critical temperatures andconcentrations. We expect that this observation, after experimentalverification and confirmation, should provide a completely newexperimental method to detect and predict critical behaviour of real solids.
机译:我们将具有sitesite Cooper配对的广义s-f模型应用于磁性和超导合金,以表明可以从化学势临界行为或从电子系统的平均占据数(临界电子再分布)检测到所有相变(温度,压力和浓度驱动)。作为相变的证据,这些量在所有临界温度和浓度下均表现出较小的(约1O-4 -1O-3)但局部扭结良好。我们希望这一观察结果在经过实验验证和确认后,应提供一种全新的实验方法来检测和预测真实固体的关键行为。

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