کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1808550 | 1525168 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and structural properties of Mn-doped Bi2Se3 topological insulators
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic and structural properties of Mn-doped Bi2Se3 topological insulators Magnetic and structural properties of Mn-doped Bi2Se3 topological insulators](/preview/png/1808550.png)
چکیده انگلیسی
A thorough investigation is presented of the magnetic and structural properties of Mn-doped Bi2Se3 topological insulators grown by molecular beam epitaxy on top of insulating BaF2 (111) substrates. The magnetic properties have been studied in the temperature range from 2Â K to 300Â K in magnetic fields up to 7 T. The systems were further characterized by means of high-resolution X-ray diffraction, electron-microprobe analysis, and X-ray photoemission spectroscopy. Samples with the atomic concentration of Mn up to about 0.06 exhibit an almost perfect crystalline structure while, for higher Mn concentrations, diffuse scattering from defects is observed. Photoemission results suggest a localized non-metallic Mn 3d5 ground state which is weakly or intermediately coupled to the Bi2Se3 environment. The exchange interaction between the Mn moments leads to a ferromagnetic phase at low temperatures with a roughly linear relation between the Curie temperature and the atomic concentration of Mn.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 481, 15 January 2016, Pages 262-267
Journal: Physica B: Condensed Matter - Volume 481, 15 January 2016, Pages 262-267
نویسندگان
R. Tarasenko, M. ValiÅ¡ka, M. VondráÄek, K. Horáková, V. TkáÄ, K. Carva, P. Baláž, V. Holý, G. Springholz, V. Sechovský, J. Honolka,