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Electron Spectroscopic Studies of Homogenous (GaMn)As layers

Intikhab Ulfat (Institutionen för teknisk fysik, Fasta tillståndets fysik) ; Johan Adell (Institutionen för teknisk fysik, Fasta tillståndets fysik) ; P. Pal ; J. Sadowski ; Lars Ilver (Institutionen för teknisk fysik, Fasta tillståndets fysik) ; Janusz Kanski (Institutionen för teknisk fysik, Fasta tillståndets fysik)
Advanced Materials Research II, Pts 1 and 2 (1022-6680). Vol. 463-464 (2012), p. 380-384.
[Konferensbidrag, refereegranskat]

By incorporating magnetism into semiconductors, it may possibly be viable to enhance the functionality of materials. An exceptionally important material in this context is GaAs, which can be doped with Mn atoms. (GaMn)As has fascinated research community as a promising candidate for spintronic application. It is quite appealing due to both its compatibility with existing HI-V technology and great progress in improving its magnetic properties. Being fabricated by low temperature molecular beam epitaxy (LT-MBE), due to thermal instability at elevated temperatures, the material contains a high density of various defects compensating Mn acceptors. It is a well-established fact that the ferromagnetic state of (GaMn)As can be stabilized via post growth annealing. Nevertheless, in general, the annealed (GaMn)As layers do not remain useful for further epitaxial overgrowth that might be included in multilayer structure. We present a summary of our investigations regarding the synchrotron-based characterization of (GaMn)As layers grown via molecular beam epitaxy carried out at the Swedish National Facility of Synchrotron Radiation-the MAX-lab aiming at the reduction of the density of Mn interstitial and increase in the content of Mn.

Nyckelord: (GaMn) As, Synchrotron-based characterization, Diluted magnetic semiconductors, curie-temperature, semiconductors



Denna post skapades 2012-12-12. Senast ändrad 2012-12-12.
CPL Pubid: 167572

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Fasta tillståndets fysik (2005-2015)

Ämnesområden

Fysik

Chalmers infrastruktur