Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $
Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has iti...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Thalmeier, P. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2002 |
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| Systematik: |
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| Anmerkung: |
© EDP Sciences, Springer-Verlag 2002 |
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| Übergeordnetes Werk: |
Enthalten in: The European physical journal / B - EDP Sciences, Springer-Verlag, 1998, 27(2002), 1 vom: Mai, Seite 29-48 |
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| Übergeordnetes Werk: |
volume:27 ; year:2002 ; number:1 ; month:05 ; pages:29-48 |
| Links: |
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| DOI / URN: |
10.1140/epjb/e20020127 |
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| Katalog-ID: |
OLC2065638249 |
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| 520 | |a Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. | ||
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10.1140/epjb/e20020127 doi (DE-627)OLC2065638249 (DE-He213)e20020127-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ UA 3858.B VZ rvk Thalmeier, P. verfasserin aut Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $ 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © EDP Sciences, Springer-Verlag 2002 Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. Enthalten in The European physical journal / B EDP Sciences, Springer-Verlag, 1998 27(2002), 1 vom: Mai, Seite 29-48 (DE-627)235469769 (DE-600)1397768-4 (DE-576)061879142 1434-6028 nnns volume:27 year:2002 number:1 month:05 pages:29-48 https://doi.org/10.1140/epjb/e20020127 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_105 GBV_ILN_120 GBV_ILN_130 GBV_ILN_170 GBV_ILN_267 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2185 GBV_ILN_2192 GBV_ILN_2221 GBV_ILN_2409 GBV_ILN_4029 GBV_ILN_4082 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4700 UA 3858.B AR 27 2002 1 05 29-48 |
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10.1140/epjb/e20020127 doi (DE-627)OLC2065638249 (DE-He213)e20020127-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ UA 3858.B VZ rvk Thalmeier, P. verfasserin aut Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $ 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © EDP Sciences, Springer-Verlag 2002 Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. Enthalten in The European physical journal / B EDP Sciences, Springer-Verlag, 1998 27(2002), 1 vom: Mai, Seite 29-48 (DE-627)235469769 (DE-600)1397768-4 (DE-576)061879142 1434-6028 nnns volume:27 year:2002 number:1 month:05 pages:29-48 https://doi.org/10.1140/epjb/e20020127 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_105 GBV_ILN_120 GBV_ILN_130 GBV_ILN_170 GBV_ILN_267 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2185 GBV_ILN_2192 GBV_ILN_2221 GBV_ILN_2409 GBV_ILN_4029 GBV_ILN_4082 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4700 UA 3858.B AR 27 2002 1 05 29-48 |
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10.1140/epjb/e20020127 doi (DE-627)OLC2065638249 (DE-He213)e20020127-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ UA 3858.B VZ rvk Thalmeier, P. verfasserin aut Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $ 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © EDP Sciences, Springer-Verlag 2002 Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. Enthalten in The European physical journal / B EDP Sciences, Springer-Verlag, 1998 27(2002), 1 vom: Mai, Seite 29-48 (DE-627)235469769 (DE-600)1397768-4 (DE-576)061879142 1434-6028 nnns volume:27 year:2002 number:1 month:05 pages:29-48 https://doi.org/10.1140/epjb/e20020127 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_105 GBV_ILN_120 GBV_ILN_130 GBV_ILN_170 GBV_ILN_267 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2185 GBV_ILN_2192 GBV_ILN_2221 GBV_ILN_2409 GBV_ILN_4029 GBV_ILN_4082 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4700 UA 3858.B AR 27 2002 1 05 29-48 |
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10.1140/epjb/e20020127 doi (DE-627)OLC2065638249 (DE-He213)e20020127-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ UA 3858.B VZ rvk Thalmeier, P. verfasserin aut Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $ 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © EDP Sciences, Springer-Verlag 2002 Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. Enthalten in The European physical journal / B EDP Sciences, Springer-Verlag, 1998 27(2002), 1 vom: Mai, Seite 29-48 (DE-627)235469769 (DE-600)1397768-4 (DE-576)061879142 1434-6028 nnns volume:27 year:2002 number:1 month:05 pages:29-48 https://doi.org/10.1140/epjb/e20020127 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_105 GBV_ILN_120 GBV_ILN_130 GBV_ILN_170 GBV_ILN_267 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2185 GBV_ILN_2192 GBV_ILN_2221 GBV_ILN_2409 GBV_ILN_4029 GBV_ILN_4082 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4700 UA 3858.B AR 27 2002 1 05 29-48 |
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10.1140/epjb/e20020127 doi (DE-627)OLC2065638249 (DE-He213)e20020127-p DE-627 ger DE-627 rakwb eng 530 VZ 530 VZ UA 3858.B VZ rvk Thalmeier, P. verfasserin aut Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $ 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © EDP Sciences, Springer-Verlag 2002 Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. Enthalten in The European physical journal / B EDP Sciences, Springer-Verlag, 1998 27(2002), 1 vom: Mai, Seite 29-48 (DE-627)235469769 (DE-600)1397768-4 (DE-576)061879142 1434-6028 nnns volume:27 year:2002 number:1 month:05 pages:29-48 https://doi.org/10.1140/epjb/e20020127 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_105 GBV_ILN_120 GBV_ILN_130 GBV_ILN_170 GBV_ILN_267 GBV_ILN_2005 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2185 GBV_ILN_2192 GBV_ILN_2221 GBV_ILN_2409 GBV_ILN_4029 GBV_ILN_4082 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4323 GBV_ILN_4700 UA 3858.B AR 27 2002 1 05 29-48 |
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Dual model for magnetic excitations and superconductivity in $ UPd_{2} $$ Al_{3} $ |
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Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. © EDP Sciences, Springer-Verlag 2002 |
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Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. © EDP Sciences, Springer-Verlag 2002 |
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Abstract: The Heavy Fermion state in $ UPd_{2} $$ Al_{3} $ may be approximately described by a dual model where two of the three U-5f electrons are in a localized state split by the crystalline electric field into two low lying singlets with a splitting energy Δ≃ 6 meV. The third 5f electron has itinerant character and forms the Heavy Electron bands. Inelastic neutron scattering and tunneling experiments suggest that magnetic excitons, the collective propagating crystal field excitations of the localized 5f electrons, mediate superconducting (sc) pairing in $ UPd_{2} $$ Al_{3} $. A theory for this novel mechanism is developed within a nonretarded approach. A model for the magnetic exciton bands is analyzed and compared with experiment. The sc pair potential which they mediate is derived and the gap equations are solved. It is shown that this mechanism favors an odd parity state which is nondegenerate due to the combined symmetry breaking by the crystalline electric field and the AF order parameter. A hybrid model including the spin fluctuation contribution to the pairing is also discussed. © EDP Sciences, Springer-Verlag 2002 |
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