Thermal coupling parameters between electron, phonon, and magnon of Nickel
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kyuhwe Kang | - |
dc.contributor.author | Gyung-Min Choi | - |
dc.date.accessioned | 2020-12-22T06:26:41Z | - |
dc.date.accessioned | 2020-12-22T06:26:41Z | - |
dc.date.available | 2020-12-22T06:26:41Z | - |
dc.date.available | 2020-12-22T06:26:41Z | - |
dc.date.created | 2020-07-22 | - |
dc.date.issued | 2020-11 | - |
dc.identifier.issn | 0304-8853 | - |
dc.identifier.uri | https://pr.ibs.re.kr/handle/8788114/8451 | - |
dc.description.abstract | © 2020 Elsevier B.V.Thermal interaction in an electron-phonon-magnon system in a ferromagnetic Ni film is investigated using a time-resolved pump-probe technique with thermoreflectance and magneto-optical Kerr effect. A nanoscale Au/Ni bilayer is used to induce thermal excitation of Ni in two ways: direct heating of Ni and indirect heating of Ni via Au. By comparing experiments and thermal modeling, we obtain the coupling parameters for electron-phonon, electron-magnon, and phonon-magnon pairs: 8.55 × 1017, 1.0–1.3 × 1017, and 0.8–1.1 × 1017 W m−3 K−1, respectively. In particular, we find that the phonon-magnon coupling parameter plays a significant role as a fast heat dissipation channel from magnon to phonon during the initial few picoseconds. In addition, both direct and indirect heating can be explained by similar coupling parameters with a variation less then 30%. Consequently, we conclude that the heat exchange between electron, phonon, and magnon is the dominant mechanism for the ultrafast demagnetization | - |
dc.description.uri | 1 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | HEAT-CONDUCTION | - |
dc.subject | SPIN | - |
dc.subject | FEMTOSECOND | - |
dc.subject | NI | - |
dc.subject | DYNAMICS | - |
dc.subject | SPECTRA | - |
dc.subject | FERROMAGNET | - |
dc.subject | RELAXATION | - |
dc.subject | EXCITATION | - |
dc.subject | TRANSPORT | - |
dc.title | Thermal coupling parameters between electron, phonon, and magnon of Nickel | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.identifier.wosid | 000569702300011 | - |
dc.identifier.scopusid | 2-s2.0-85086745191 | - |
dc.identifier.rimsid | 72640 | - |
dc.contributor.affiliatedAuthor | Gyung-Min Choi | - |
dc.identifier.doi | 10.1016/j.jmmm.2020.167156 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.514, pp.167156 | - |
dc.citation.title | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | - |
dc.citation.volume | 514 | - |
dc.citation.startPage | 167156 | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | HEAT-CONDUCTION | - |
dc.subject.keywordPlus | SPIN | - |
dc.subject.keywordPlus | FEMTOSECOND | - |
dc.subject.keywordPlus | NI | - |
dc.subject.keywordPlus | DYNAMICS | - |
dc.subject.keywordPlus | SPECTRA | - |
dc.subject.keywordPlus | FERROMAGNET | - |
dc.subject.keywordPlus | RELAXATION | - |
dc.subject.keywordPlus | EXCITATION | - |
dc.subject.keywordPlus | TRANSPORT | - |