scholarly journals Direct probing of band-structure Berry phase in diluted magnetic semiconductors

2015 ◽  
Vol 91 (23) ◽  
Author(s):  
M. Granada ◽  
D. Lucot ◽  
R. Giraud ◽  
A. Lemaître ◽  
C. Ulysse ◽  
...  
Keyword(s):  
Band Structure ◽  
Diluted Magnetic Semiconductors ◽  
Berry Phase ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic

scholarly journals A Comparison of the Valence Band Structure of Bulk and Epitaxial GeTe-based Diluted Magnetic Semiconductors

2010 ◽  
Vol 117 (2) ◽  
pp. 293-295 ◽  
Author(s):  
M.A. Pietrzyk ◽  
B.J. Kowalski ◽  
B.A. Orlowski ◽  
W. Knoff ◽  
T. Story ◽  
...  
Keyword(s):  
Band Structure ◽  
Valence Band ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Valence Band Structure ◽  
Diluted Magnetic

scholarly journals Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd1−x−yZnxMny)3As2 (x + y = 0.3)

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 988
Author(s):  
Vasilii Zakhvalinskii ◽  
Tatyana Nikulicheva ◽  
Evgeny Pilyuk ◽  
Oleg Ivanov ◽  
Aleksey Kochura ◽  
...  
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Berry Phase ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Transverse Magnetic ◽  
Dirac Fermions ◽  
Unannealed Sample ◽  
Sdh Oscillations ◽  
Diluted Magnetic

Features in the transverse magnetoresistance of single-crystalline diluted magnetic semiconductors of a (Cd1−x−yZnxMny)3As2 system with x + y = 0.3 have been found and analyzed in detail. Two groups of samples have been examined. The samples of the first group were thermally annealed for a long time, whereas the samples of the second group were not thermally annealed. The Shubnikov–de Haas (SdH) oscillations were observed for both groups of the samples within a 4.2 ÷ 30 K temperature range and under transverse magnetic field sweeping from 0 up to 11 T. The value of a phase shift, according to the SdH oscillations, was found to be a characteristic of the Berry phase existing in all the samples, except the unannealed sample with y = 0.08. Thickness of 2D surface topological nanolayers for all the samples was estimated. The thickness substantially depended on Mn concentration. The experimental dependence of reduced cyclotron mass on the Fermi wave vector, extracted from the SdH oscillations for the samples with different doping levels, is in satisfactory agreement with the predicted theoretical linear dependence. The existence of the Dirac fermions in all the samples studied (except the unannealed sample with y = 0.08) can be concluded from this result.

Room temperature ferromagnetic Zn0.98Co0.02O powders with improved visible-light photocatalysis

RSC Advances ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 6761-6767 ◽  
Author(s):  
Huiyun Zhang ◽  
Wei Hao ◽  
Yanqiang Cao ◽  
Xiaofeng Chang ◽  
Mingxiang Xu ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Room Temperature ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Energy Levels ◽  
Fine Tuning ◽  
Visible Light Photocatalysis ◽  
Diluted Magnetic

The realization of ferromagnetic diluted magnetic semiconductors requires the fine tuning of the energy levels of the band structure, which might have important applications in photocatalysis.

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