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Two-Photon Absorption by Impurity Scattering and Amplitude Mode in Conventional Superconductors

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dc.contributor.author Jujo, Takanobu en
dc.date.accessioned 2017-09-19T05:06:45Z en
dc.date.available 2017-09-19T05:06:45Z en
dc.date.issued 2015-10-23 en
dc.identifier.issn 0031-9015 en
dc.identifier.uri http://hdl.handle.net/10061/12122 en
dc.description.abstract We theoretically investigate the two-photon absorption spectrum of conventional s-wave superconductors. The calculation is carried out in the local limit at absolute zero. The direct excitation of quasiparticles is excluded under the condition that the frequency of the external field is lower than twice the magnitude of the superconducting gap. We calculate vertex corrections with the conserving approximation, and show that the amplitude mode is independent of the impurity scattering in the local limit. Because of this property, a diverging absorption edge appears in the dirty limit. We propose this behavior as a probe of the amplitude mode. en
dc.language.iso en en
dc.publisher The Physical Society of Japan en
dc.rights Copyright c 2015 The Physical Society of Japan en
dc.title Two-Photon Absorption by Impurity Scattering and Amplitude Mode in Conventional Superconductors en
dc.type.nii Journal Article en
dc.contributor.transcription ジュウジョウ, タカノブ ja
dc.contributor.alternative 重城, 貴信 ja
dc.textversion author en
dc.identifier.jtitle Journal of the Physical Society of Japan en
dc.identifier.volume 84 en
dc.identifier.issue 11 en
dc.relation.doi 10.7566/JPSJ.84.114711 en
dc.identifier.artnum 114711 en
dc.identifier.NAIST-ID 73293318 en


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