scholarly journals The spin polaron theory as a mechanism for high temperature superconductivity

2017 ◽  
Author(s):  
Danilo M. Yanga
Keyword(s):  
High Temperature ◽  
High Temperature Superconductivity ◽  
Spin Polaron ◽  
Polaron Theory

SPIN-POLARON PAIRING AND HIGH-TEMPERATURE SUPERCONDUCTIVITY

1988 ◽  
Vol 02 (05) ◽  
pp. 699-709 ◽  
Author(s):  
Hiroshi Kamimura
Keyword(s):  
High Temperature ◽  
Exchange Interaction ◽  
High Temperature Superconductivity ◽  
Spin Polaron ◽  
S Wave ◽  
Wave Pairing ◽  
Spin Singlet ◽  
Atomic Exchange ◽  
Spin Polarons ◽  
The Right

In this paper a review is given on the mechanism of high temperature superconductivity recently developed by Kamimura, Matsuno, and Saito. In this mechanism spin-polarons associated with itinerant holes in the e v band (Cu dz 2- Op π band) are created in CuO 2 layers by strong intra-atomic exchange interaction (Hund's coupling) with localized dx 2− y 2 holes. Then the interplay of Hund's coupling and superexchange between Cu 2+( dx 2− y 2) spins gives rise to an attractive exchange interaction between spin-polarons, which leads to the formation of spin-singlet spin-polarons pairs. This contributes to high temperature superconductivity. Further the s-wave pairing reproduces the observed x dependence of T c as well as the right magnitudes of T c in ( La 1−x Sr x )2 CuO 4 satisfactorily.

Spin-polaron pairing and high-temperature superconductivity

1988 ◽  
Vol 67 (4) ◽  
pp. 363-367 ◽  
Author(s):  
Hiroshi Kamimura ◽  
Shunichi Matsuno ◽  
Riichiro Saito
Keyword(s):  
High Temperature ◽  
High Temperature Superconductivity ◽  
Spin Polaron
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