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Exciton Mediated Superconductivity in PrOs4Sb12
- Publication Year :
- 2005
-
Abstract
- The most important character of the exotic superconductor PrOs4Sb12 is the existence of low-lying excitations (excitons) with a finite energy gap and it appears as the magnetic field-induced order above 4.5 T. We focus on the a_u conduction band, which hybridizes with a Pr 4f^2 state strongly, coupled to the excitons. It results in an attractive interaction between the conduction electrons. The symmetry of the superconducting order parameter is determined by dispersion relation of the exciton. For the bcc system PrOs4Sb12, a d-wave state [kx ky + omega ky kz + omega^2 kz kx, omega=exp(pm i 2 pi/3)] is stabilized with broken time reversal symmetry.<br />4 pages
- Subjects :
- Physics
Superconductivity
Strongly Correlated Electrons (cond-mat.str-el)
Condensed matter physics
Band gap
Exciton
Condensed Matter - Superconductivity
FOS: Physical sciences
General Physics and Astronomy
Electron
Omega
Symmetry (physics)
Superconductivity (cond-mat.supr-con)
Condensed Matter - Strongly Correlated Electrons
T-symmetry
Dispersion relation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....de5987ec9040d241b9e9d8613e52f3a7