Translational energy distribution of Si atoms desorbed by laser-induced electronic bond breaking of adatoms on Si(111)-(7x7)

被引：42

作者：

Kanasaki, J ^{[1
]}

Iwata, K ^{[1
]}

Tanimura, K ^{[1
]}

机构：

[1] Nagoya Univ, Dept Phys, Grad Sch Sci, Nagoya, Aichi 4648602, Japan

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.82.644

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The desorption of Si atoms caused by the laser-induced electronic bond breaking of adatoms of Si(111)-(7 X 7) was studied upon exciting the surface with nanosecond and femtosecond laser pulses. The translational energy distribution of desorbed Si atoms is characterized by a peak energy of 0.06 eV with an onset energy of 0.02 eV; the feature is independent of wavelengths, fluences, and temporal widths of excitation laser pulses. This energy distribution, as well as other characteristic features of the process, is well described by a proposed model of phonon-kick mechanism following the two-hole localization on adatom sites. [S0031-9007(98)08226-X].

引用

页码：644 / 647

页数：4

共 25 条

[1]

ALMEH R, 1991, SURF SCI, V251, P396

[2] DIRECT OBSERVATION OF E0 AND E0 + DELTA0 TRANSITIONS IN SILICON [J].

ASPNES, DE ;

STUDNA, AA .

SOLID STATE COMMUNICATIONS, 1972, 11 (10) :1375-&

[3] FEMTOSECOND DESORPTION DYNAMICS PROBED BY TIME-RESOLVED VELOCITY-MEASUREMENTS [J].

BUSCH, DG ;

GAO, SW ;

PELAK, RA ;

BOOTH, MF ;

HO, W .

PHYSICAL REVIEW LETTERS, 1995, 75 (04) :673-676

[4] ADATOM VIBRATIONS ON SI(111) RECONSTRUCTED SURFACES [J].

DAUM, W ;

IBACH, H ;

MULLER, JE .

PHYSICAL REVIEW LETTERS, 1987, 59 (14) :1593-1596

[5]

HASSELBRINK E, 1996, LASER SPECTROSCOPY P

[6] Laser-induced electronic bond breaking and desorption of adatoms on Si(111)-(7x7) [J].

Kanasaki, J ;

Ishida, T ;

Ishikawa, K ;

Tanimura, K .

PHYSICAL REVIEW LETTERS, 1998, 80 (18) :4080-4083

[7] DYNAMIC INTERACTION OF SURFACE ELECTRON-HOLE PAIRS WITH SURFACE-DEFECTS - SURFACE SPECTROSCOPY MONITORED BY PARTICLE EMISSIONS [J].

KANASAKI, J ;

OKANO, A ;

ISHIKAWA, K ;

NAKAI, Y ;

ITOH, N .

PHYSICAL REVIEW LETTERS, 1993, 70 (16) :2495-2498

[8]

KANASAKI J, IN PRESS

[9] NON-RADIATIVE TRANSITION IN A POTENTIAL CROSSING SYSTEM [J].

KAYANUMA, Y ;

NASU, K .

SOLID STATE COMMUNICATIONS, 1978, 27 (12) :1371-1373

[10]

KELLY P, 1989, OPT ENG, V28

← 1 2 3 →