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Quasiclassical Theory on Third-Harmonic Generation in Conventional Superconductors with Paramagnetic Impurities

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dc.contributor.author Jujo, Takanobu en
dc.date.accessioned 2018-10-23T01:33:51Z en
dc.date.available 2018-10-23T01:33:51Z en
dc.date.issued 2017-12-27 en
dc.identifier.issn 0031-9015 en
dc.identifier.uri http://hdl.handle.net/10061/12604 en
dc.description.abstract We investigate the third-harmonic generation (THG) of s-wave superconductors under microwave pulse irradiation. We consider the effect of paramagnetic impurities on the THG intensity of dirty superconductors. The nonlinear response function is calculated using the method of the quasiclassical Green function. It is shown that the amplitude mode is included as the vertex correction and makes a predominant contribution to the THG intensity. When the effect of paramagnetic impurities is weak, the THG intensity shows a peak at the temperature at which the superconducting gap is about the same as the frequency of the incident pulse, similarly to in experiments. As the effect of paramagnetic impurities is strengthened, the peak of the THG intensity disappears. This indicates that time-reversal symmetry breaking due to paramagnetic impurities eliminates the well-defined amplitude mode. The result of our calculation shows that the existence of the amplitude mode can be confirmed through the THG intensity. The result of a semiquantitative calculation is in good agreement with the experimental result, and it also shows that the diamagnetic term is negligible. en
dc.language.iso en en
dc.publisher The Physical Society of Japan en
dc.rights ©2018 The Physical Society of Japan ja
dc.rights 出版社許諾条件により、本文は2018年12月27日以降に公開 ja
dc.title Quasiclassical Theory on Third-Harmonic Generation in Conventional Superconductors with Paramagnetic Impurities 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.ncid AA00704814 en
dc.identifier.jtitle Journal of the Physical Society of Japan en
dc.identifier.volume 87 en
dc.identifier.issue 2 en
dc.relation.doi 10.7566/JPSJ.87.024704 en
dc.identifier.artnum 024704 en
dc.identifier.NAIST-ID 73293318 en


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