期刊
PHYSICAL REVIEW LETTERS
卷 110, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.136601
关键词
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资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science, and Technology [20120007294]
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2012000550]
- NSF [DMR-1005751]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1005751] Funding Source: National Science Foundation
We propose a phase diagram for FexBi2Te3 (0 <= x <= 0: 1) single crystals, which belong to a class of magnetically bulk-doped topological insulators. The evolution of magnetic correlations from ferromagnetic to antiferromagnetic gives rise to topological phase transitions, where the paramagnetic topological insulator of Bi2Te3 turns into a band insulator with ferromagnetic-cluster glassy behavior around x similar to 0.025, and it further evolves to a topological insulator with valence-bond glassy behavior, which spans over the region from x similar to 0.03 up to x similar to 0.1. This phase diagram is verified by measuring magnetization, magnetotransport, and angle-resolved photoemission spectra with theoretical discussions. DOI: 10.1103/PhysRevLett.110.136601
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