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

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

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.

Original language	English
Article number	166402
Journal	Physical Review Letters
Volume	100
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.100.166402
Publication status	Published - 2008 Apr 25

ASJC Scopus subject areas

Physics and Astronomy(all)

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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

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.

PY - 2008/4/25

Y1 - 2008/4/25

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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

Abstract

ASJC Scopus subject areas

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