One-dimensional growth of MgO film on SrTiO3(100)

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We studied the growth mode and electronic structure of MgO thin films on a Nb-doped SrTiO3(100) single crystal by scanning tunnelling microscopy and scanning tunnelling spectroscopy. The MgO films grew in a one-dimensional (1D) chain growth mode on the SrTiO3. It is thought that the driving forces for this growth mode are compressive stress on the MgO films and the reconstructed SrTiO3 surface. When we imaged the MgO films at various tunnelling biases, the chains disappeared in the STM topography at a bias lower than 2.0 V and the underlying SrTiO3(100) surface beneath the MgO films could be imaged with an atomic resolution.
Publisher
IOP PUBLISHING LTD
Issue Date
2007-05
Language
English
Article Type
Article
Citation

NANOTECHNOLOGY, v.18, no.17

ISSN
0957-4484
DOI
10.1088/0957-4484/18/17/175304
URI
http://hdl.handle.net/10203/280265
Appears in Collection
PH-Journal Papers(저널논문)
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