Electron-phonon mass-enhancement parameter and the Fermi-line eccentricity at the Be(1010) surface from angle-resolved photoemission

被引：13

作者：

Balasubramanian, T ^{[1
]}

Glans, PA ^{[1
]}

Johansson, LI ^{[1
]}

机构：

[1] Linkoping Univ, Dept Phys, S-58183 Linkoping, Sweden

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.61.12709

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report angle-resolved photoemission measurements of the dispersion of the shallow surface state around (A)overbar and the surface electron-phonon mass-enhancement parameter lambda(s) at the Be(1010) surface. The eccentricity of the elliptical Fermi line formed by the surface state is found to be epsilon=0.684. We obtain lambda(s)=0.672 +/- 0.027 along the major axis and lambda(s)= 0.642+/-0.031 along the minor axis of the Fermi line. The lambda(s) values are about three times larger than the bulk lambda(b) = 0.24.

引用

页码：12709 / 12712

页数：4

共 20 条

[1] Superconductivity of Cold-Deposited Beryllium Films
Alekseevskii, N. E.
Tsebro, V. I.
[J]. JOURNAL OF LOW TEMPERATURE PHYSICS, 1971, 4 (06) : 679 - 696
[2] THEORETICAL SUPERCONDUCTING TRANSITION TEMPERATURES AND POSSIBILITY OF SUPERCONDUCTIVITY IN MG
ALLEN, PB
COHEN, ML
[J]. SOLID STATE COMMUNICATIONS, 1969, 7 (09) : 677 - &
[3] Large value of the electron-phonon coupling parameter (λ=1.15) and the possibility of surface superconductivity at the Be(0001) surface
Balasubramanian, T
Jensen, E
Wu, XL
Hulbert, SL
[J]. PHYSICAL REVIEW B, 1998, 57 (12) : R6866 - R6869
[4] ANGLE-RESOLVED PHOTOEMISSION INVESTIGATION OF THE ELECTRONIC-STRUCTURE OF BE - SURFACE-STATES
BARTYNSKI, RA
JENSEN, E
GUSTAFSSON, T
PLUMMER, EW
[J]. PHYSICAL REVIEW B, 1985, 32 (04): : 1921 - 1926
[5] Butcher P., 1995, PHYS WORLD SEP, P48
[6] SURFACE ELECTRONIC-STRUCTURE OF BE(0001) AND MG(0001)
CHULKOV, EV
SILKIN, VM
SHIRYKALOV, EN
[J]. SURFACE SCIENCE, 1987, 188 (1-2) : 287 - 300
[7] Grimvall G., 1981, ELECT PHONON INTERAC
[8] Anisotropic two-dimensional Friedel oscillations
Hofmann, P
Briner, BG
Doering, M
Rust, HP
Plummer, EW
Bradshaw, AM
[J]. PHYSICAL REVIEW LETTERS, 1997, 79 (02) : 265 - 268
[9] The electronic structure of Be(10(1)over-bar-0)
Hofmann, P
Stumpf, R
Silkin, VM
Chulkov, EV
Plummer, EW
[J]. SURFACE SCIENCE, 1996, 355 (1-3) : L278 - L282
[10] Lattice vibrations at the Be(10(1)over-bar0) surface
Hofmann, P
Plummer, EW
[J]. SURFACE SCIENCE, 1997, 377 (1-3) : 330 - 334

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