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Phase Separation and Bulk p‐n Transition in Single Crystals of Bi 2 Te 2 Se Topological Insulator
Author(s) -
Mi JianLi,
Bremholm Martin,
Bianchi Marco,
Borup Kasper,
Johnsen Simon,
Søndergaard Martin,
Guan Dandan,
Hatch Richard C.,
Hofmann Philip,
Iversen Bo B.
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201203542
Subject(s) - materials science , topological insulator , phase (matter) , ideal (ethics) , condensed matter physics , phase transition , crystal (programming language) , electrical resistivity and conductivity , crystallography , computer science , physics , chemistry , philosophy , epistemology , quantum mechanics , programming language
Separation of ordered and disordered phases is found along the growth axis of a Bi 2 Te 2 Se crystal rod. A high bulk resistivity is found in phase II, which is an ideal candidate for investigation of the transport properties of the surface states. The bulk insulating feature of phase II is caused by the opposing effects of different types of defects.