“APPLICATIONS OF THE SPIN POLARON THEORY AS A MICROSCOPIC MECHANISM OF HIGH TEMPERATURE SUPERCONDUCTIVITY”

APPC 2000 ◽  
2001 ◽  
Author(s):  
DANILO M. YANGA ◽  
AUGUSTO A. MORALES
Keyword(s):  
High Temperature ◽  
High Temperature Superconductivity ◽  
Spin Polaron ◽  
Microscopic Mechanism ◽  
Polaron Theory

A Microscopic Mechanism of Coulomb Driven Effective Negative Interaction for the High-Temperature Superconductivity

2008 ◽  
Vol 77 (Suppl.C) ◽  
pp. 109-112
Author(s):  
Koichi Kusakabe ◽  
Hiroshi Katayama-Yoshida ◽  
Hidetoshi Kizaki ◽  
Akitaka Nakanishi
Keyword(s):  
High Temperature ◽  
High Temperature Superconductivity ◽  
Negative Interaction ◽  
Microscopic Mechanism

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

scholarly journals GLASS MODEL, HUBBARD MODEL AND HIGH-TEMPERATURE SUPERCONDUCTIVITY

1999 ◽  
Vol 10 (01) ◽  
pp. 309-320 ◽  
Author(s):  
INGO MORGENSTERN ◽  
WERNER FETTES ◽  
THOMAS HUSSLEIN ◽  
DENNIS M. NEWNS ◽  
PRATAP C. PATTNAIK
Keyword(s):  
High Temperature ◽  
Hubbard Model ◽  
High Temperature Superconductivity ◽  
High Temperature Superconductors ◽  
Finite Size ◽  
Microscopic Level ◽  
Finite Size Scaling ◽  
Microscopic Mechanism ◽  
Glass Model ◽  
Superconducting Correlations

In this paper we revisit the glass model describing the macroscopic behavior of the High-Temperature superconductors. We link the glass model at the microscopic level to the striped phase phenomenon, recently discussed widely. The size of the striped phase domains is consistent with earlier predictions of the glass model when it was introduced for High-Temperature Superconductivity in 1987. In an additional step we use the Hubbard model to describe the microscopic mechanism for d-wave pairing within these finite size stripes. We discuss the implications for superconducting correlations of the Hubbard model, which are much higher for stripes than for squares, for finite size scaling, and for the new view of the glass model picture.

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