TITLE

Influence of strain on diffusion at Ge(111) surfaces

AUTHOR(S)
Cherepanov, Vasily; Voigtländer, Bert
PUB. DATE
December 2002
SOURCE
Applied Physics Letters;12/16/2002, Vol. 81 Issue 25, p4745
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The measurement of the density of two-dimensional islands by scanning tunneling microscopy after submonolayer growth is used to determine the strain dependence of surface diffusion. Templates of strained and relaxed Ge surfaces with the same surface reconstruction are prepared for comparison. The diffusion barrier for Ge and Si adatoms is found to increase with increasing compressive strain of the Ge(111) substrate. When the strain increases from relaxed Ge to Ge strained to the Si lattice constant, the diffusion barrier is estimated to increase by ∼60 meV.
ACCESSION #
8652454

 

Related Articles

  • Surface electronic density of states of tetrahedral amorphous carbon investigated by scanning tunneling spectroscopy and ab initio calculations. Koivusaari, K. Jarmo; Rantala, Tapio T.; Levoska, J.; Leppa¨vuori, S. // Applied Physics Letters;5/8/2000, Vol. 76 Issue 19 

    The surface electronic density of states of tetrahedral amorphous carbon has been measured by scanning tunneling microscopy and calculated by density functional theory. An analysis of these results and their comparison is presented here for a series of structures with different microscopic mass...

  • Tuning magnetostatic interaction in single-crystalline nanodot arrays with in-plane easy axes. Jungpil Seo; Kim, T.-H.; Chung, S.-H.; Oh, Y.; Choi, J. H.; Young Kuk // Applied Physics Letters;2/15/2010, Vol. 96 Issue 7, p073106 

    We have fabricated an ultrahigh-vacuum-processed, ordered, single-crystalline nanodot array. By mapping the magnetization of the nanodots with spin polarized scanning tunneling microscopy in the same chamber where they were grown, we are able to understand how the short-range order of the...

  • Proximity effects of negative charge groups contact-electrified on thin silicon oxide in air. Uchihashi, Takayuki; Okusako, Takahiro; Sugawara, Yasuhiro; Yamanishi, Yoshiki; Oasa, Takahiko; Morita, Seizo // Journal of Applied Physics;4/15/1996, Vol. 79 Issue 8, p4174 

    Presents a study which examined the proximity effects of negative charge groups contact-electrified on a thin silicon oxide in air. Clarification on the nature of the interplay of the Coulomb repulsive force and the surface diffusion of charges; Experimental method; Results and discussion.

  • Atomic scale control of single molecule charging. Mikaelian, G.; Ogawa, N.; Tu, X. W.; Ho, W. // Journal of Chemical Physics;4/7/2006, Vol. 124 Issue 13, p131101 

    A scanning tunneling microscope was used to study charging of single copper phthalocyanine molecules adsorbed on an ultrathin Al2O3 film grown on a NiAl(110) surface. A double-barrier tunnel junction is formed by a vacuum barrier between the tip and the molecule and an oxide barrier between the...

  • Impurity Effect of d-wave High-Tc Superconductors in the Presence of the Charge Modulation. Wang, Guo-Feng; Zhou, Tao // Journal of Superconductivity & Novel Magnetism;Dec2014, Vol. 27 Issue 12, p2685 

    Based on a phenomenological model, we study theoretically the impurity effect in d-wave high-Tc superconductors in the presence of the charge-density-wave (CDW) order. Our results verify that the intensity of the resonance state induced by the impurity depends on the CDW scattering strength. It...

  • Plasmadynamic Structure of Electrode Torches and its Influence on the Dynamics of Development of Pulsed Surface Discharge. Avramenko, V. // Journal of Engineering Physics & Thermophysics;Mar2005, Vol. 78 Issue 2, p388 

    An experimental study has been made of the plasmadynamic structure of electrode plasma torches and its influence on the dynamics of development of a high-current pulsed surface discharge with separated torches at atmospheric and low pressures. Much attention has been given to the behavior of the...

  • Self-similar solutions in surface electrodynamics. Buchin, V.; Shaposhnikova, G. // Doklady Physics;Feb2006, Vol. 51 Issue 2, p60 

    The article refers to the problems related to surface electrodynamics along with its solutions. Flat surfaces usually include lavsan fabrics and polyethylene films. An electric charge is produced as these products are used in procedures like spreading and rewinding. This charge is capable of...

  • Stress induced leakage current mechanism in thin Hf-silicate layers. Paskaleva, A.; Lemberger, M.; Bauer, A. J. // Applied Physics Letters;1/22/2007, Vol. 90 Issue 4, p042105 

    Stress induced leakage current (SILC) in thin Hf-silicate layers and the mechanisms of its creation are examined. A very strong polarity and thickness dependence as well as partial recovery of SILC are observed. It is suggested that the trapping in preexisting sites influences SILC by two ways:...

  • Solution-processible high-permittivity nanocomposite gate insulators for organic field-effect transistors. Kim, P.; Zhang, X.-H.; Domercq, B.; Jones, S. C.; Hotchkiss, P. J.; Marder, S. R.; Kippelen, B.; Perry, J. W. // Applied Physics Letters;7/7/2008, Vol. 93 Issue 1, p013302 

    We report on solution-processible high permittivity nanocomposite gate insulators based on BaTiO3 nanoparticles, surface-modified with a phosphonic acid, in poly(4-vinylphenol) for organic field-effect transistors. The use of surface-modified BaTiO3 nanoparticles affords high quality...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics