Bending and stretching vibrations of hydrogen and deuterium at GaAs(110) surfaces

被引：9

作者：

Grabowski, SP ^{[1
]}

Nienhaus, H ^{[1
]}

Monch, W ^{[1
]}

机构：

[1] UNIV DUISBURG GESAMTHSCH,FESTKORPERPHYS LAB,D-47048 DUISBURG,GERMANY

来源：

SURFACE SCIENCE | 1996年 / 352卷

关键词：

adatoms; electron energy loss spectroscopy; gallium arsenide; hydrogen; low index single crystal surfaces; vibrations of adsorbed molecules;

D O I：

10.1016/0039-6028(95)01153-6

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：

Vibrations at hydrogen and deuterium covered GaAs(110) surfaces were investigated by high resolution electron energy loss spectroscopy. With semi-insulating crystals, bending modes of H and D were found at 515 and 387 cm(-1) (63.9 and 48 meV), respectively. After large exposures when substrate bonds are broken scissor modes at 1000 cm(-1) (124 meV) for As-H-2 and at 752 cm(-1) (93.2 meV) for As-D-2 groups were observed. In the low-coverage regime two components of the Ga-H stretching vibration at 1830 and 1850 cm(-1) (226.9 and 230.6 meV) were resolved. They may be explained by Ga-H dipole-dipole interactions.

引用

页码：310 / 314

页数：5

共 19 条

[1] CHEMISORPTION OF H ON GAAS(110) - A 1ST-PRINCIPLES CALCULATION [J].

BERTONI, CM ;

NARDELLI, MB ;

BERNARDINI, F ;

FINOCCHI, F ;

MOLINARI, E .

EUROPHYSICS LETTERS, 1990, 13 (07) :653-658

[2] COUPLED PLASMON AND PHONON EXCITATIONS IN THE SPACE-CHARGE LAYER ON GAAS(110) SURFACES [J].

CHEN, Y ;

NANNARONE, S ;

SCHAEFER, J ;

HERMANSON, JC ;

LAPEYRE, GJ .

PHYSICAL REVIEW B, 1989, 39 (11) :7653-7658

[3]

DELPENNINO U, 1993, J PHYS-CONDENS MAT, V5, P6613, DOI 10.1088/0953-8984/5/36/017

[4] HREELS INVESTIGATION OF THE 1ST STAGE OF INTERACTION OF ATOMIC-HYDROGEN WITH GAAS(1 1 0) SURFACES [J].

DELPENNINO, U ;

MARIANI, C ;

AMODDEO, A ;

PROIX, F ;

SEBENNE, CA .

PHYSICA B, 1991, 170 (1-4) :487-491

[5] SURFACE VIBRATIONS AT CLEAN AND HYDROGENATED GAAS(11O) FROM AB-INITIO MOLECULAR-DYNAMICS [J].

DIFELICE, R ;

SHKREBTII, AI ;

FINOCCHI, F ;

BERTONI, CM ;

ONIDA, G .

JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1993, 64-5 :697-706

[6] SURFACE OPTICAL PHONONS AND HYDROGEN CHEMISORPTION ON POLAR AND NON-POLAR FACES OF GAAS, INP, AND GAP [J].

DUBOIS, LH ;

SCHWARTZ, GP .

PHYSICAL REVIEW B, 1982, 26 (02) :794-802

[7] STRUCTURE AND DYNAMICS OF HYDROGENATED GAAS(110) AND INP(110) SURFACES [J].

FRITSCH, J ;

ECKERT, A ;

PAVONE, P ;

SCHRODER, U .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (40) :7717-7728

[8] TRIMETHYLAMINE ADDUCTS OF GALLANE AND TRIDEUTERIOGALLANE [J].

GREENWOOD, NN ;

STORR, A ;

WALLBRIDGE, MGH .

INORGANIC CHEMISTRY, 1963, 2 (05) :1036-&

[9] VIBRATIONAL SPECTRUM OF METHYL ARSINE [J].

HARVEY, AB ;

WILSON, MK .

JOURNAL OF CHEMICAL PHYSICS, 1966, 44 (09) :3535-&

[10] ELECTRON-ENERGY LOSS SPECTROSCOPY - RECENT ADVANCES IN TECHNOLOGY AND APPLICATION [J].

IBACH, H ;

BALDEN, M ;

BRUCHMANN, D ;

LEHWALD, S .

SURFACE SCIENCE, 1992, 269 :94-102

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