2024-03-29T01:07:56Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/337482022-01-20T11:14:09Zcom_10261_36com_10261_4col_10261_289
DIGITAL.CSIC
author
Fuster, David
author
González Sagardoy, María Ujué
author
González Sotos, Luisa
author
González Díez, Yolanda
author
Ben, Teresa
author
Ponce, Arturo
author
Molina, Sergio I.
2011-03-24T11:25:19Z
2011-03-24T11:25:19Z
2003
MRS Proceedings 794: T5.3 (2003)
0272-9172
http://hdl.handle.net/10261/33748
10.1557/PROC-794-T5.3
Size and spatial distribution homogeneity of nanostructures is greatly improved by making stacks of nanostructures separated by thin spacers. In this work we present in situ and in real time stress measurements and reflection high energy electron diffraction (RHEED) observations and ex situ transmission electron microscopy (TEM) characterization of stacked layers of InAs quantum wires (QWr) separated by InP spacer layers, d(InP), of thickness between 3 and 20 nm. For d(InP) < 20 nm, the amount of InAs involved in the newly created QWr from the 2nd stack layer on, exceeds that provided by the In cell. Our results suggest that in those cases InAs 3D islands formation starts at the P/As switching and lasts during further InAs deposition. We propose an explanation for this process that is strongly supported on TEM observations. The results obtained in this work imply that concepts like the existence of a critical thickness for 2D-3D growth mode transition should be revised in correlated QWr stacks of layers.
eng
closedAccess
Size and critical thickness evolution during growth of stacked layers of InAs/InP(001) quantum wires studied by in situ stress measurements
comunicación de congreso
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