Abstract :Superconducting (SC) fluctuations, discovered in the late 1960s, have constituted an important research area in superconductivity as they are manifest in a variety of phenomena. Strong fluctuations lead to anomalous properties of the normal state in some high-temperature superconductor materials. In this talk, the physics of SC fluctuations is reviewed, commencing from a qualitative description of thermodynamic fluctuations close to the critical temperature and quantum fluctuations at zero temperature in the vicinity of the second critical field. This review highlights a series of experimental findings followed by microscopic description and numerical analysis of the effects of fluctuations on numerous properties of superconductors in the entire phase diagram and beyond the superconducting phase.

References:

1. A. Varlamov, A. Galda, and A. Glatz, Rev. Mod. Phys. 90, 015009 (2018).

2.A. Larkin, A. Varlamov, “Theory of Fluctuations in Superconductors” , OUP Oxford, (2009).

主讲人简介：安德烈·瓦尔拉莫夫（Andrey Varlamov）教授是超导理论和凝聚态物理学领域的著名科学家，1980年在阿历克斯·阿布里科索夫（2003年获诺贝尔物理学奖得主）指导下获凝聚态物理学博士学位，1986年获苏联国家青年科学家物理学奖，1990～1999任莫斯科钢铁与合金研究所理论物理系教授；1999年起任意大利国家研究委员会超导、新材料和器件研究所研究主任，罗马大学教授；2009年起任意大利科学院通讯院士；有8本超导理论方面的专著和130余篇科学论文；已有50余篇科普作品发表于《量子》等著名科普刊物，主要由这些科普作品结集成书的《奇妙的物理学》，自1987年面世以来，以6种语言出版了12版，直接影响了世界各国的科普读者。