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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F10%3A00353804%21RIV11-GA0-68378271
rdf:type
skos:Concept n14:Vysledek
dcterms:description
Surface unit cells with a larger area and a reduced symmetry have a larger configurational entropy. The entropy may even stabilize reconstructions with higher energy at finite temperatures. We study the entropy contribution to surface reconstructions on the basis of ground-state calculations employing density-functional theory. Specifically, the ground-state GaSb(111)A surface reconstruction has a (22) symmetry, but at elevated temperatures, we experimentally observe the (2323)-R30° symmetry in agreement with the theoretical results. The findings based on the general expressions are consistent with experimental data from other semiconductor surfaces. Surface unit cells with a larger area and a reduced symmetry have a larger configurational entropy. The entropy may even stabilize reconstructions with higher energy at finite temperatures. We study the entropy contribution to surface reconstructions on the basis of ground-state calculations employing density-functional theory. Specifically, the ground-state GaSb(111)A surface reconstruction has a (22) symmetry, but at elevated temperatures, we experimentally observe the (2323)-R30° symmetry in agreement with the theoretical results. The findings based on the general expressions are consistent with experimental data from other semiconductor surfaces.
dcterms:title
Stabilization of semiconductor surface reconstructions by configurational entropy Stabilization of semiconductor surface reconstructions by configurational entropy
skos:prefLabel
Stabilization of semiconductor surface reconstructions by configurational entropy Stabilization of semiconductor surface reconstructions by configurational entropy
skos:notation
RIV/68378271:_____/10:00353804!RIV11-GA0-68378271
n3:aktivita
n4:P n4:Z
n3:aktivity
P(GA202/07/0601), P(GPP204/10/P028), Z(AV0Z10100521)
n3:cisloPeriodika
12
n3:dodaniDat
n6:2011
n3:domaciTvurceVysledku
Romanyuk, Olexandr
n3:druhVysledku
n7:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n9:predkladatel
n3:idSjednocenehoVysledku
289606
n3:idVysledku
RIV/68378271:_____/10:00353804
n3:jazykVysledku
n17:eng
n3:klicovaSlova
GaSb; surface reconstruction; DFT; entropy
n3:klicoveSlovo
n8:entropy n8:GaSb n8:surface%20reconstruction n8:DFT
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[B2D981F68633]
n3:nazevZdroje
Physical Review. B
n3:obor
n15:BM
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n5:GA202%2F07%2F0601 n5:GPP204%2F10%2FP028
n3:rokUplatneniVysledku
n6:2010
n3:svazekPeriodika
82
n3:tvurceVysledku
Braun, W. Romanyuk, Olexandr Riechert, H. Grosse, F. Proessdorf, A.
n3:wos
000281845900006
n3:zamer
n13:AV0Z10100521
s:issn
1098-0121
s:numberOfPages
5