Temperature-dependent localized excitations of doped carriers in superconducting diamond

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

Research output: Contribution to journalArticle

18 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 languageEnglish
Article number166402
JournalPhysical Review Letters
Volume100
Issue number16
DOIs
Publication statusPublished - Apr 25 2008

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sidebands
diamonds
replicas
excitation
phonons
photoelectric emission
superconductivity
temperature
energy
spectroscopy
lasers

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Temperature-dependent localized excitations of doped carriers in superconducting diamond. / Ishizaka, K.; Eguchi, Ritsuko; Tsuda, S.; Chainani, A.; Yokoya, Takayoshi; 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.

Research output: Contribution to journalArticle

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
Ishizaka, K. ; Eguchi, Ritsuko ; Tsuda, S. ; Chainani, A. ; Yokoya, Takayoshi ; Kiss, T. ; Shimojima, T. ; Togashi, T. ; Watanabe, S. ; Chen, C. T. ; Takano, Y. ; Nagao, M. ; Sakaguchi, I. ; Takenouchi, T. ; Kawarada, H. ; Shin, S. / Temperature-dependent localized excitations of doped carriers in superconducting diamond. In: Physical Review Letters. 2008 ; Vol. 100, No. 16.
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AU - Yokoya, Takayoshi

AU - Kiss, T.

AU - Shimojima, T.

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AU - Watanabe, S.

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AU - Nagao, M.

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AU - Shin, S.

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