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Titolo:
X-RAY-SCATTERING STUDY OF THE SURFACE-MORPHOLOGY OF AU(111) DURING AR+ ION IRRADIATION
Autore:
MURTY MVR; CURCIC T; JUDY A; COOPER BH; WOLL AR; BROCK JD; KYCIA S; HEADRICK RL;
Indirizzi:
CORNELL UNIV,ATOM & SOLID STATE PHYS LAB ITHACA NY 14853 CORNELL UNIV,SCH APPL & ENGN PHYS ITHACA NY 14853 CORNELL UNIV,CORNELL HIGH ENERGY SYNCHROTRON SOURCE,WILSON LAB ITHACANY 14853
Titolo Testata:
Physical review letters
fascicolo: 21, volume: 80, anno: 1998,
pagine: 4713 - 4716
SICI:
0031-9007(1998)80:21<4713:XSOTSO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOLECULAR-BEAM EPITAXY; BY-LAYER GROWTH; ROUGHENING INSTABILITY; BOMBARDMENT; HOMOEPITAXY; TRANSITION; GE(001);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
M.V.R. Murty et al., "X-RAY-SCATTERING STUDY OF THE SURFACE-MORPHOLOGY OF AU(111) DURING AR+ ION IRRADIATION", Physical review letters, 80(21), 1998, pp. 4713-4716

Abstract

Using real-time x-ray scattering to measure the surface morphology ofAu(111) during sputter erosion with 500 eV Ar+ ions, we observe threedistinct regimes: three-dimensional rough erosion at 20-60 degrees C,quasi-layer-by-layer removal at 120-220 degrees C, and step retraction above 270 degrees C. Sputtering at 20-60 degrees C leads to pattern formation with a characteristic spacing between features. The average separation l between features increases with time t, consistent with apower law l similar to t(0.27+/-0.02). The observations are consistent with the predictions of a continuum model for deposition which includes an Ehrlich-Schwoebel barrier to the interlayer diffusion of surface defects.

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Documento generato il 03/12/20 alle ore 06:12:53