Zobrazeno 1 - 10
of 250
pro vyhledávání: '"R.F. Willis"'
Publikováno v:
Surface Science. :453-457
When ion bombarded at room temperature, the surface of the icosahedral quasicrystal Al70Pd20Mn10 converts to a cubic structure. Bombarded at elevated temperatures, the surface remains quasicrystalline but converts to a tenfold-symmetric structure. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37064892ece513ade00d45adcc0e9728
https://doi.org/10.1016/s0039-6028(00)00218-1
https://doi.org/10.1016/s0039-6028(00)00218-1
Autor:
R.F. Willis
Over the past few years, there has been a growing awareness of the vibratio nal properties of solid surfaces and adsorbates due to a steady growth in the number of experimental techniques which have evolved with sufficient resolution and surface se
Publikováno v:
Applied Physics A. 66:1003-1006
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a6e08b3d95a2af63c3a15b0ea44022b
https://doi.org/10.1007/pl00022812
https://doi.org/10.1007/pl00022812
Publikováno v:
Physica B: Condensed Matter. 168:273-277
A formalism for calculating the shift of surface phonon dispersion curves due to the presence of defects in surface alloys is presented, using the matching technique and an effective field approach that goes beyond the virtual crystal approximation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::512556d4eca4b0b2a1f63dc4f74adabc
https://doi.org/10.1016/0921-4526(91)90061-i
https://doi.org/10.1016/0921-4526(91)90061-i
Autor:
R.F. Willis, S.D. Kevan
Publisher Summary This chapter discusses the highly-correlated electronic behavior in solids. The search for a good theoretical description of the electronic structure and related physical properties of narrow band materials has led to two different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc2f8d275fa2f64d002386302e15ec71
https://doi.org/10.1016/s0167-2991(08)61785-1
https://doi.org/10.1016/s0167-2991(08)61785-1
Autor:
R.F. Willis, A. Amiri Hezaveh, Alexander M. Bradshaw, M. Surman, Kevin C. Prince, G. Jennings, D. Pescia
Publikováno v:
Solid State Communications. 57:329-334
The energy bands along the (001)-direction of face centered cubic iron have been determined by means of angle resolved photoemission utilising synchrotron radiation. Bulk Fe is bcc at room temperature: the metastable fcc-phase has been obtained by th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd5722a992729b33d7b901a72003ec78
https://doi.org/10.1016/0038-1098(86)90101-8
https://doi.org/10.1016/0038-1098(86)90101-8
Publikováno v:
Review of Scientific Instruments. 58:1439-1444
We have developed an imaging photoelectron spectrometer based on a simple electrostatic immersion lens with the capability of measuring photoemission intensity as a function of the parallel component of electron wave vector throughout the Brillouin z
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::053ef717fbc6a3ab60f7263029c040ac
https://doi.org/10.1063/1.1139429
https://doi.org/10.1063/1.1139429
Publikováno v:
Physical Review B. 39:7552-7560
We present a theoretical study of the angular distribution of electrons inelastically scattered after the vibrational excitation of molecules adsorbed upon crystalline surfaces through the formation of temporary negative ions. We develop a theoretica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0244d4ecadc3fa45a6885e7a4c6f203b
https://doi.org/10.1103/physrevb.39.7552
https://doi.org/10.1103/physrevb.39.7552
Publikováno v:
Surface Science Letters. 147:L630-L636
We show that existing theories which relate the helium-metal potential to the metallic surface charge density do not lead to a unique prediction for the surface charge density profile for a given experimental potential. A simple calculation of the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::283ee0b061e9b033d6544d99d0390ef3
https://doi.org/10.1016/0167-2584(84)90842-9
https://doi.org/10.1016/0167-2584(84)90842-9
Publikováno v:
Physical Review B. 37:2408-2414
The surface-dielectric-response function is important in describing a wide range of many-body properties of surfaces. Previous calculations of this quantity have assumed a free-electron metal surface, treated in a jellium approximation. Here we prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4614ffd168b3b9284c9cd628d152c858
https://doi.org/10.1103/physrevb.37.2408
https://doi.org/10.1103/physrevb.37.2408