一些超导材料在超导转变温度下表现出摩擦系数突然降低,引起科学家极大关注,因而对摩擦的微观起源进行了研究,并探讨了声子的产生和电子激励对摩擦的贡献.综述了低温摩擦学的主要研究方法,重点总结了YBa2Cu3O7-δ在正常态及超导态下的摩擦学特性,分析了YBa2Cu3O7-δ在超导态下具有较低摩擦系数的摩擦机理,展望了YBa2Cu3O7-δ在摩擦学方面的应用前景.
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