Temperature-dependent localized excitations of doped carriers in superconducting diamond

K. Ishizaka, R. Eguchi, S. Tsuda, Ashish Atma 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

研究成果: Article

19 引文 斯高帕斯(Scopus)


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.

期刊Physical review letters
出版狀態Published - 2008 四月 25

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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