Electron-phonon coupling in potassium-doped graphene: Angle-resolved photoemission spectroscopy

被引：90

作者：

Bianchi, M. ^{[1
]}

Rienks, E. D. L. ^{[2
,3
]}

Lizzit, S. ^{[4
]}

Baraldi, A. ^{[1
,5
,6
]}

Balog, R. ^{[2
,3
]}

Hornekaer, L. ^{[2
,3
]}

Hofmann, Ph. ^{[2
,3
]}

机构：

[1] Univ Trieste, Dept Phys, I-34127 Trieste, Italy

[2] Univ Aarhus, Inst Storage Ring Facil, DK-8000 Aarhus C, Denmark

[3] Univ Aarhus, Interdisciplinary Nanosci Ctr iNANO, DK-8000 Aarhus C, Denmark

[4] Sincrotrone Trieste, I-34149 Trieste, Italy

[5] Univ Trieste, CENMAT, I-34127 Trieste, Italy

[6] INFM CNR, Lab TASC, I-34012 Trieste, Italy

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.81.041403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electron-phonon coupling in potassium-doped graphene on Ir(111) is studied via the renormalization of the pi* band near the Fermi level, using angle-resolved photoemission spectroscopy. The renormalization is found to be fairly weak and almost isotropic, with a mass enhancement parameter of lambda = 0.28(6) for both the (K) over bar-(M) over bar and the (K) over bar-(Gamma) over bar direction. These results are found to agree well with recent first-principles calculations.

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页数：4

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