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Superconducting Energy Gap and Pairing Interaction in High Tc Oxides

Maekawa, S. / Ebisawa, H. / Isawa, Y.

Abstract We propose two characteristic features in high Tc oxides, La-Sr-Cu-0 and Y-Ba-Cu-O: (i) The apparent discrepancy of the superconducting energy gap between far-infrared and quasi- particle tunneling measurements can be an indication of anisotropic Cooper pairing with spin singlet. (ii) The Coulomb interaction induces spin wave mode with the wave number of the Brillouin zone boundary and the energy close to 2Δ0, Δ0 being the maximum value of the superconducting energy gap. This mode may be observed by neutron inelastic scattering and tunneling experiments.

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Superconducting Energy Gap and Pairing Interaction in High Tc Oxides

Maekawa, S. / Ebisawa, H. / Isawa, Y.

Abstract We propose two characteristic features in high Tc oxides, La-Sr-Cu-0 and Y-Ba-Cu-O: (i) The apparent discrepancy of the superconducting energy gap between far-infrared and quasi- particle tunneling measurements can be an indication of anisotropic Cooper pairing with spin singlet. (ii) The Coulomb interaction induces spin wave mode with the wave number of the Brillouin zone boundary and the energy close to 2Δ0, Δ0 being the maximum value of the superconducting energy gap. This mode may be observed by neutron inelastic scattering and tunneling experiments.

Superconducting Energy Gap and Pairing Interaction in High Tc Oxides

Maekawa, S. / Ebisawa, H. / Isawa, Y.

Abstract We propose two characteristic features in high Tc oxides, La-Sr-Cu-0 and Y-Ba-Cu-O: (i) The apparent discrepancy of the superconducting energy gap between far-infrared and quasi- particle tunneling measurements can be an indication of anisotropic Cooper pairing with spin singlet. (ii) The Coulomb interaction induces spin wave mode with the wave number of the Brillouin zone boundary and the energy close to 2Δ0, Δ0 being the maximum value of the superconducting energy gap. This mode may be observed by neutron inelastic scattering and tunneling experiments.

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Titel:

Superconducting Energy Gap and Pairing Interaction in High Tc Oxides

Beteiligte:

Maekawa, S. (Autor:in) / Ebisawa, H. (Autor:in) / Isawa, Y. (Autor:in)

Erschienen in:

Novel Superconductivity ; 411-419

Erscheinungsdatum:

01.01.1987

Format / Umfang:

9 pages

ISBN:

978-1-4612-9076-6 , 978-1-4613-1937-5

DOI:

https://doi.org/10.1007/978-1-4613-1937-5_46

Medientyp:

Aufsatz/Kapitel (Buch)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Optical Conductivity , Neutron Inelastic Scattering , Tunneling Conductance , Oxide Superconductor , Spin Singlet Physics , Strongly Correlated Systems, Superconductivity , Characterization and Evaluation of Materials

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