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Carrier Dynamics in a Series of Organic Magnetic Superconductors
| Title: | Carrier Dynamics in a Series of Organic Magnetic Superconductors |
| Authors: | Naito, Toshio Browse this author | | Matsuo, Saori Browse this author | | Inabe, Tamotsu Browse this author | | Toda, Yasunori Browse this author →KAKEN DB |
| Issue Date: | 26-Jan-2012 |
| Publisher: | American Chemical Society |
| Journal Title: | Journal of Physical Chemistry C |
| Volume: | 116 |
| Issue: | 3 |
| Start Page: | 2588 |
| End Page: | 2593 |
| Publisher DOI: | 10.1021/jp210966u |
| Abstract: | Understanding how electrons behave, i.e., carrier dynamics, in superconductors is indispensable for understanding the mechanism of superconductivity. Recently we have reported the carrier dynamics of κ- and λ-(BETS)2MCl4 (BETS = bis(ethylenedithio)tetraselenafulvalene, M = Ga, Fe) based on ultrafast spectroscopy, but the interpretation of the results remains an open question. In this paper we interpreted the results with the aid of newly measured magnetic susceptibility, X-ray single crystal structural analysis, and band calculation. Observation of coherent phonons only in the λ-type salts indicated that e-ph interaction should be characteristically strong in the λ-type salts. By comparison of the observed carrier dynamics with a two-temperature model, the temperature-dependence of carrier dynamics is consistently explained by the different strengths of the e-ph interaction between the λ- and the κ-type salts. The difference in strength of the e-ph interactions is related to their crystal structures. In conclusion, their carrier dynamics is consistently interpreted and classified by their crystal structures. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/48386 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 戸田 泰則
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