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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/6050

Title: Investigation of broken symmetry of Sb/Cu(111) surface alloys by VT-STM
Authors: Ndlovu, GF
Asante, JKO
Roos, WD
Hillie, KT
Keywords: VT-STM
CuSb systems
Issue Date: Jul-2011
Publisher: SAIP
Citation: Ndlovu, GF, Asante, JKO, Roos, WD and Hillie, KT. Investigation of broken symmetry of Sb/Cu(111) surface alloys by VT-STM. 56th Annual Conference of the South African Institute of Physics (SAIP2011), St George Hotel, Pretoria, 12-15 July 2011, pp 243-248
Series/Report no.: Workflow;8122
Abstract: This work present an in situ Variable Temperature Scanning Tunneling Microscopy (VT-STM) study of the Sb/Cu(111) system studied at various temperatures. The experimental data support a structural model in which Sb atoms displace up to 1/3 of the first layer of Cu atoms and incorporate them into the first Cu layer. In contrast to the clean Cu(111) substrate the surface of the surface alloy is corrugated due to the outward relaxation of the alloy atoms thus breaking the surface structural symmetry. The study report for the first time to our knowledge the observation of the Cu(111)(2 x 2) -Sb superstructure obtained at elevated temperatures.
Description: 56th Annual Conference of the South African Institute of Physics (SAIP2011), St George Hotel, Pretoria, 12-15 July 2011
URI: http://www.saip.org.za/images/stories/documents/SAIP_Proceedings/SAIP2011_Proceedings.djvu
http://hdl.handle.net/10204/6050
ISBN: 978-1-86888-688-3
Appears in Collections:Nanotechnology
General science, engineering & technology

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