Superconductors with a Topological Gap

Condensed Matter

article

Maria Cristina Diamantini¹ 

[1] NiPS Laboratory, INFN and Dipartimento di Fisica e Geologia, University of Perugia

关键词: topological mass;    superconductivity;    topological field theory;   

DOI  :  10.3390/condmat8020046

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

I review a new superconductivity mechanism in which the gap is opened through a topological mechanism and not through the Landau mechanism of spontaneous symmetry breaking. As a consequence, the low-energy effective theory which describes these new superconductors is not the Landau–Ginzburg theory, formulated in terms of a local-order parameter, but a topological-field theory formulated in terms of emerging gauge fields. This new mechanism is realized as global superconductivty in Josephson junction arrays and in thin superconducting films with thicknesses comparable to the superconducting coherence length, which exhibits emergent granularity.

【 授权许可】

CC BY