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Magnetism and metal-insulator transition in Fe ( Sb 1 − x Te x ) 2

Magnetism and metal-insulator transition in Fe ( Sb 1 − x Te x ) 2 We have investigated structural, magnetic, and transport properties of Fe ( Sb 1 − x Te x ) 2 single crystals. Whereas metallic ground state is induced for x = 0.001 , canted antiferromagnetism is observed for 0.1 ≤ x ≤ 0.4 with an intermediate ferromagnetic phase for x = 0.2 . With higher Te doping, semiconducting behavior is restored and the variable range hopping conduction mechanism dominates at low temperatures for 0.4 ≤ x ≤ 0.6 . We discuss our results within the framework of inverted metal to insulator in correlated electron insulators. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Magnetism and metal-insulator transition in Fe ( Sb 1 − x Te x ) 2

Hu, Rongwei; Mitrović, V. F; Petrovic, C. F
Physical Review B , Volume 79 (6) – Feb 1, 2009
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Publisher
American Physical Society (APS)
Copyright
Copyright © 2009 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.79.064510
Publisher site
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Abstract

We have investigated structural, magnetic, and transport properties of Fe ( Sb 1 − x Te x ) 2 single crystals. Whereas metallic ground state is induced for x = 0.001 , canted antiferromagnetism is observed for 0.1 ≤ x ≤ 0.4 with an intermediate ferromagnetic phase for x = 0.2 . With higher Te doping, semiconducting behavior is restored and the variable range hopping conduction mechanism dominates at low temperatures for 0.4 ≤ x ≤ 0.6 . We discuss our results within the framework of inverted metal to insulator in correlated electron insulators.

Journal

Physical Review B – American Physical Society (APS)

Published: Feb 1, 2009

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