Temperature-dependent localized excitations of doped carriers in superconducting diamond

被引：23

作者：

Ishizaka, K. ^{[1
]}

Eguchi, R. ^{[1
]}

Tsuda, S. ^{[2
]}

Chainani, A. ^{[3
]}

Yokoya, T. ^{[4
]}

Kiss, T. ^{[1
]}

Shimojima, T. ^{[1
]}

Togashi, T. ^{[3
]}

Watanabe, S. ^{[1
]}

Chen, C. -T. ^{[5
]}

Takano, Y. ^{[2
]}

Nagao, M. ^{[2
]}

Sakaguchi, I. ^{[2
]}

Takenouchi, T. ^{[6
]}

Kawarada, H. ^{[6
]}

Shin, S. ^{[1
,3
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[3] RIKEN, Inst Phys & Chem Res, Hyogo 6795143, Japan

[4] Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan

[5] Chinese Acad Sci, Beijing Ctr Crystal R&D, Beijing 100080, Peoples R China

[6] Waseda Univ, Sch Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.100.166402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 (similar to 150 meV) 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.

引用

页数：4

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