期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 83, 期 6, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.7566/JPSJ.83.063709
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) [24740211, 25103703]
- Grants-in-Aid for Scientific Research [25103703, 25247056, 24740211, 26400308, 26107505] Funding Source: KAKEN
We theoretically investigate ferromagnetic ordering in magnetically doped solid-solution narrow-gap semiconductors with the strong spin-orbit interaction such as Cr-doped Bi-2(SexTe1-x)(3). We compute the spontaneous magnetization of impurities and itinerant electrons, and estimate the critical temperature as a function of the concentration of magnetic dopants and the strength of the spin-orbit interaction. It is found that the critical temperature is proportional to the concentration of dopants and enhanced with the strong spin-orbit interaction. It is also found that the ferromagnetic transition could make the system turn to the Weyl semimetal which possesses a pair of Weyl points separating in the momentum space.
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