Theory of Multipole Fluctuation Mediated Superconductivity and Multipole Phase

Theory of Multipole Fluctuation Mediated Superconductivity and Multipole Phase
Author :
Publisher : Springer Nature
Total Pages : 128
Release :
ISBN-10 : 9789811610264
ISBN-13 : 9811610266
Rating : 4/5 (64 Downloads)

Book Synopsis Theory of Multipole Fluctuation Mediated Superconductivity and Multipole Phase by : Rina Tazai

Download or read book Theory of Multipole Fluctuation Mediated Superconductivity and Multipole Phase written by Rina Tazai and published by Springer Nature. This book was released on 2021-05-18 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: A strong spin-orbit interaction and Coulomb repulsion featuring strongly correlated d- and f-electron systems lead to various exotic phase transition including unconventional superconductivity and magnetic multipole order. However, their microscopic origins are long standing problem since they could not be explained based on conventional Migdal-Eliashberg theorem. The book focuses on many-body correlation effects beyond conventional theory for the d- and f-electron systems, and theoretically demonstrates the correlations to play significant roles in “mode-coupling” among multiple quantum fluctuations, which is called U-VC here. The following key findings are described in-depth: (i) spin triplet superconductivity caused by U-VC, (ii) being more important U-VC in f-electron systems due to magnetic multipole degrees of freedom induced by a spin-orbit interaction, and (iii) s-wave superconductivity stabilized cooperatively by antiferromagnetic fluctuations and electron-phonon interaction contrary to conventional understanding. The book provides meaningful step for revealing essential roles of many-body effects behind long standing problems in strongly correlated materials.


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