Ultrafast electron diffraction at surfaces after laser excitation

被引：37

作者：

Janzen, A. ^{[1
]}

Krenzer, B. ^{[1
]}

Zhou, P. ^{[1
]}

von der Linde, D. ^{[1
]}

Hoegen, M. Horn-von ^{[1
]}

机构：

[1] Univ Duisburg Essen, Fachbereich Phys, D-47048 Duisburg, Germany

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 18期

关键词：

RHEED; time-resolved diffraction; energy dissipation; silicon; bismuth; heteroepitaxy; thermal boundary conductance;

D O I：

10.1016/j.susc.2006.02.070

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ultrafast electron diffraction in a RHEED setup is used to determine the dynamics of surface temperature of an epitaxial thin Bismuth-film on a Si(001) substrate upon fs-laser excitation. A transient temperature rise by 120 K is followed by a slow exponential cooling with time constant 640 ps. The surface cooling rate deviates from simple heat diffusion and is dominated by total internal reflection of ballistic phonons at the Bi/Si-interface which determines the thermal properties of the hetero-system. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：4094 / 4098

页数：5

共 27 条

[1] A PICOSECOND ELECTRON-GUN FOR SURFACE-ANALYSIS [J].

AESCHLIMANN, M ;

HULL, E ;

CAO, J ;

SCHMUTTENMAER, CA ;

JAHN, LG ;

GAO, Y ;

ELSAYEDALI, HE ;

MANTELL, DA ;

SCHEINFEIN, MR .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (02) :1000-1009

[2] HEATING OF SOLID TARGETS WITH LASER PULSES [J].

BECHTEL, JH .

JOURNAL OF APPLIED PHYSICS, 1975, 46 (04) :1585-1593

[3] Ultrafast electron dynamics at metal surfaces: Competition between electron-phonon coupling and hot-electron transport [J].

Bonn, M ;

Denzler, DN ;

Funk, S ;

Wolf, M ;

Wellershoff, SS ;

Hohlfeld, J .

PHYSICAL REVIEW B, 2000, 61 (02) :1101-1105

[4] TIME-RESOLVED OBSERVATION OF ELECTRON-PHONON RELAXATION IN COPPER [J].

ELSAYEDALI, HE ;

NORRIS, TB ;

PESSOT, MA ;

MOUROU, GA .

PHYSICAL REVIEW LETTERS, 1987, 58 (12) :1212-1215

[5] PICOSECOND TIME-RESOLVED SURFACE-LATTICE TEMPERATURE PROBE [J].

ELSAYEDALI, HE ;

HERMAN, JW .

APPLIED PHYSICS LETTERS, 1990, 57 (15) :1508-1510

[6] DIRECT MEASUREMENT OF NONEQUILIBRIUM ELECTRON-ENERGY DISTRIBUTIONS IN SUBPICOSECOND LASER-HEATED GOLD-FILMS [J].

FANN, WS ;

STORZ, R ;

TOM, HWK ;

BOKOR, J .

PHYSICAL REVIEW LETTERS, 1992, 68 (18) :2834-2837

[7] LOW-ENERGY ELECTRON DIFFRACTION STUDIES OF SURFACE MELTING AND FREEZING OF LEAD, BISMUTH, AND TIN SINGLE-CRYSTAL SURFACES [J].

GOODMAN, RM ;

SOMORJAI, GA .

JOURNAL OF CHEMICAL PHYSICS, 1970, 52 (12) :6325-&

[8] Surface crystallography by low energy electron diffraction [J].

Heinz, K ;

Hammer, L .

ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1998, 213 (12) :615-634

[9]

Horn-von Hoegen M, 1999, Z KRISTALLOGR, V214, P591, DOI 10.1524/zkri.1999.214.10.591

[10]

JANZEN A, UNPUB REV SCI INSTRU

← 1 2 3 →