2010 Fiscal Year Final Research Report

Possible enhancement of transition temperature due to magnetic impurities with internal structure in a superconductor

Research Project

Project/Area Number	20540353
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Condensed matter physics II
Research Institution	Shizuoka University
Principal Investigator	KOGA Mikito 静岡大学, 教育学部, 准教授 (40324321)
Co-Investigator(Kenkyū-buntansha)	MATSUMOTO Masashige 静岡大学, 理学部, 教授 (20281058) KUSUNOSE Hiroaki 愛媛大学, 大学院・理工学研究科, 准教授 (00292201)
Project Period (FY)	2008 – 2010
Keywords	物性理論 / 強相関系 / 超伝導
Research Abstract	Superconductivity is one of central issues in progress of science technology. We investigate additional degrees of freedom such as orbital that differ from magnetic degrees of freedom, which are relevant to stability conditions of higher temperature superconductors. In a multiband case, for increase of the transition temperature of superconductivity, we focus on(1) relative signs of order parameters in superconducting bands and(2) multipole(orbital moment) types of magnetic impurities coupled to band electrons. This result gives a new concept for the study of superconductivity and magnetism.

(5 results)