Isotopic Fingerprint of Electron-Phonon Coupling in High-Tc Cuprates

被引：88

作者：

Iwasawa, H. ^{[1
,2
]}

Douglas, J. F. ^{[3
]}

Sato, K. ^{[1
,4
]}

Masui, T. ^{[5
]}

Yoshida, Y. ^{[1
]}

Sun, Z. ^{[3
]}

Eisaki, H. ^{[1
]}

Bando, H. ^{[1
]}

Ino, A. ^{[6
]}

Arita, M. ^{[7
]}

Shimada, K. ^{[7
]}

Namatame, H. ^{[7
]}

Taniguchi, M. ^{[6
,7
]}

Tajima, S. ^{[5
]}

Uchida, S. ^{[8
]}

Saitoh, T. ^{[2
]}

Dessau, D. S. ^{[3
]}

Aiura, Y. ^{[1
,7
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[2] Tokyo Univ Sci, Dept Appl Phys, Tokyo 1628601, Japan

[3] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[4] Ibaraki Univ, Fac Sci, Ibaraki 3108512, Japan

[5] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[6] Hiroshima Univ, Grad Sch Sci, Higashihiroshima 7398526, Japan

[7] Hiroshima Univ, Hiroshima Synchrotron Radiat Ctr, Higashihiroshima 7398526, Japan

[8] Univ Tokyo, Dept Phys, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.101.157005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Angle-resolved photoemission spectroscopy with low-energy tunable photons along the nodal direction of oxygen isotope substituted Bi2Sr2CaCu2O8+delta reveals a distinct oxygen isotope shift near the electron-boson coupling "kink" in the electronic dispersion. The magnitude (a few meV) and direction of the kink shift are as expected due to the measured isotopic shift of phonon frequency, and are also in agreement with theoretical expectations. This demonstrates the participation of the phonons as dominant players, as well as pinpointing the most relevant of the phonon branches.

引用

页数：4

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