Topological phase transitions driven by magnetic phase transitions in Fe(x)Bi2Te3 (0≤x≤0.1) single crystals.
Phys Rev Lett
; 110(13): 136601, 2013 Mar 29.
Article
em En
| MEDLINE
| ID: mdl-23581352
ABSTRACT
We propose a phase diagram for Fe(x)Bi2Te3 (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 xâ¼0.025, and it further evolves to a topological insulator with valence-bond glassy behavior, which spans over the region from xâ¼0.03 up to xâ¼0.1. This phase diagram is verified by measuring magnetization, magnetotransport, and angle-resolved photoemission spectra with theoretical discussions.
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MEDLINE
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En
Ano de publicação:
2013
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Article