Temperature-dependent localized excitations of doped carriers in superconducting diamond

K. Ishizaka; R. Eguchi; S. Tsuda; A. Chainani; T. Yokoya; T. Kiss; T. Shimojima; T. Togashi; S. Watanabe; C. T. Chen; Y. Takano; M. Nagao; I. Sakaguchi; T. Takenouchi; H. Kawarada; S. Shin

doi:10.1103/PhysRevLett.100.166402

Temperature-dependent localized excitations of doped carriers in superconducting diamond

K. Ishizaka^*, R. Eguchi, S. Tsuda, A. Chainani, T. Yokoya, T. Kiss, T. Shimojima, T. Togashi, S. Watanabe, C. T. Chen, Y. Takano, M. Nagao, I. Sakaguchi, T. Takenouchi, H. Kawarada, S. Shin

^*この研究の対応する著者

基幹理工学部

研究成果: Article › 査読

21 被引用数 (Scopus)

抄録

Laser-excited photoemission spectroscopy is used to show that the doped carriers in metallic or superconducting diamond couple strongly to the lattice via high-energy (∼150meV) optical phonons, with direct observations of localized Franck-Condon multiphonon sidebands appearing as Fermi-edge replicas. It exhibits a temperature-dependent spectral weight transfer from higher to lower energy sidebands and zero-phonon Fermi-edge states. The quantified coupling strength shows a systematic increase on lowering temperature, implicating its relation to the normal state transport and superconductivity.

本文言語	English
論文番号	166402
ジャーナル	Physical Review Letters
巻	100
号	16
DOI	https://doi.org/10.1103/PhysRevLett.100.166402
出版ステータス	Published - 2008 4 25

ASJC Scopus subject areas

物理学および天文学（全般）

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10.1103/PhysRevLett.100.166402

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Ishizaka, K., Eguchi, R., Tsuda, S., Chainani, A., Yokoya, T., Kiss, T., Shimojima, T., Togashi, T., Watanabe, S., Chen, C. T., Takano, Y., Nagao, M., Sakaguchi, I., Takenouchi, T., Kawarada, H., & Shin, S. (2008). Temperature-dependent localized excitations of doped carriers in superconducting diamond. Physical Review Letters, 100(16), [166402]. https://doi.org/10.1103/PhysRevLett.100.166402

Temperature-dependent localized excitations of doped carriers in superconducting diamond. / Ishizaka, K.; Eguchi, R.; Tsuda, S.; Chainani, A.; Yokoya, T.; Kiss, T.; Shimojima, T.; Togashi, T.; Watanabe, S.; Chen, C. T.; Takano, Y.; Nagao, M.; Sakaguchi, I.; Takenouchi, T.; Kawarada, H.; Shin, S.

In: Physical Review Letters, Vol. 100, No. 16, 166402, 25.04.2008.

研究成果: Article › 査読

Ishizaka, K, Eguchi, R, Tsuda, S, Chainani, A, Yokoya, T, Kiss, T, Shimojima, T, Togashi, T, Watanabe, S, Chen, CT, Takano, Y, Nagao, M, Sakaguchi, I, Takenouchi, T, Kawarada, H & Shin, S 2008, 'Temperature-dependent localized excitations of doped carriers in superconducting diamond', Physical Review Letters, vol. 100, no. 16, 166402. https://doi.org/10.1103/PhysRevLett.100.166402

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AU - Ishizaka, K.

AU - Eguchi, R.

AU - Tsuda, S.

AU - Chainani, A.

AU - Yokoya, T.

AU - Kiss, T.

AU - Shimojima, T.

AU - Togashi, T.

AU - Watanabe, S.

AU - Chen, C. T.

AU - Takano, Y.

AU - Nagao, M.

AU - Sakaguchi, I.

AU - Takenouchi, T.

AU - Kawarada, H.

AU - Shin, S.

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AB - Laser-excited photoemission spectroscopy is used to show that the doped carriers in metallic or superconducting diamond couple strongly to the lattice via high-energy (∼150meV) optical phonons, with direct observations of localized Franck-Condon multiphonon sidebands appearing as Fermi-edge replicas. It exhibits a temperature-dependent spectral weight transfer from higher to lower energy sidebands and zero-phonon Fermi-edge states. The quantified coupling strength shows a systematic increase on lowering temperature, implicating its relation to the normal state transport and superconductivity.

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Temperature-dependent localized excitations of doped carriers in superconducting diamond

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