Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3)
Features in the transverse magnetoresistance of single-crystalline diluted magnetic semiconductors of a (Cd<sub>1−<i>x</i>−<i>y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>...
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2020-10-01
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| author | Vasilii Zakhvalinskii Tatyana Nikulicheva Evgeny Pilyuk Oleg Ivanov Aleksey Kochura Alexander Kuzmenko Erkki Lähderanta Alexander Morocho |
| author_facet | Vasilii Zakhvalinskii Tatyana Nikulicheva Evgeny Pilyuk Oleg Ivanov Aleksey Kochura Alexander Kuzmenko Erkki Lähderanta Alexander Morocho |
| author_sort | Vasilii Zakhvalinskii |
| collection | DOAJ |
| description | Features in the transverse magnetoresistance of single-crystalline diluted magnetic semiconductors of a (Cd<sub>1−<i>x</i>−<i>y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> system with <i>x + y</i> = 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 <i>y</i> = 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 <i>y</i> = 0.08) can be concluded from this result. |
| first_indexed | 2024-03-10T15:11:41Z |
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| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T15:11:41Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-27737a1d03634e1da1f29f660fad30872023-11-20T19:14:57ZengMDPI AGCrystals2073-43522020-10-01101198810.3390/cryst10110988Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3)Vasilii Zakhvalinskii0Tatyana Nikulicheva1Evgeny Pilyuk2Oleg Ivanov3Aleksey Kochura4Alexander Kuzmenko5Erkki Lähderanta6Alexander Morocho7Belgorod National Research University, Institute of Engineering and Digital Technologies, Belgorod 308015, RussiaBelgorod National Research University, Institute of Engineering and Digital Technologies, Belgorod 308015, RussiaBelgorod National Research University, Institute of Engineering and Digital Technologies, Belgorod 308015, RussiaBelgorod National Research University, Institute of Engineering and Digital Technologies, Belgorod 308015, RussiaSouthwest State University, Regional Centre of Nanotechnology, Kursk 305040, RussiaSouthwest State University, Regional Centre of Nanotechnology, Kursk 305040, RussiaDepartment of Mathematics and Physics, Lappeenranta University of Technology, P.O. Box 20, FIN-53852 Lappeenranta, FinlandBelgorod National Research University, Institute of Engineering and Digital Technologies, Belgorod 308015, RussiaFeatures in the transverse magnetoresistance of single-crystalline diluted magnetic semiconductors of a (Cd<sub>1−<i>x</i>−<i>y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> system with <i>x + y</i> = 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 <i>y</i> = 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 <i>y</i> = 0.08) can be concluded from this result.https://www.mdpi.com/2073-4352/10/11/988diluted magnetic semiconductorShubnikov–de Haas effectcadmium arsenidethree-dimensional topological Dirac semimetals2D topological nanolayers |
| spellingShingle | Vasilii Zakhvalinskii Tatyana Nikulicheva Evgeny Pilyuk Oleg Ivanov Aleksey Kochura Alexander Kuzmenko Erkki Lähderanta Alexander Morocho Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3) Crystals diluted magnetic semiconductor Shubnikov–de Haas effect cadmium arsenide three-dimensional topological Dirac semimetals 2D topological nanolayers |
| title | Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3) |
| title_full | Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3) |
| title_fullStr | Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3) |
| title_full_unstemmed | Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3) |
| title_short | Two-Dimensional Surface Topological Nanolayers and Dirac Fermions in Single Crystals of the Diluted Magnetic Semiconductor (Cd<sub>1<i>−x−y</i></sub>Zn<i><sub>x</sub></i>Mn<i><sub>y</sub></i>)<sub>3</sub>As<sub>2</sub> (<i>x</i> + <i>y</i> = 0.3) |
| title_sort | two dimensional surface topological nanolayers and dirac fermions in single crystals of the diluted magnetic semiconductor cd sub 1 i x y i sub zn i sub x sub i mn i sub y sub i sub 3 sub as sub 2 sub i x i i y i 0 3 |
| topic | diluted magnetic semiconductor Shubnikov–de Haas effect cadmium arsenide three-dimensional topological Dirac semimetals 2D topological nanolayers |
| url | https://www.mdpi.com/2073-4352/10/11/988 |
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