Magnetic properties of gadolinium substituted Bi{sub 2}Te{sub 3} thin films

Journal Article · Mon Jun 17 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4812292· OSTI ID:22163040

Li, S. ^[1]; Harrison, S. E.; Huo, Y.; Harris, J. S. ^[2]; Pushp, A.; Kellock, A. J.; Parkin, S. S. P. ^[3]; Yuan, H. T. ^[4]; Zhou, B.; Chen, Y. -L. ^[1]; Hesjedal, T. ^[5]

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1. Department of Physics, Stanford University, Stanford, California 94305 (United States)
2. Department of Electrical Engineering, Stanford University, Stanford, California 94305 (United States)
3. IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120 (United States)
4. Geballe Laboratory for Advanced Materials, 476 Lomita Mall, Stanford University, Stanford, California 94305 (United States)
5. Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)

Thin film GdBiTe{sub 3} has been proposed as a candidate material in which to observe the quantum anomalous Hall effect. As a thermal non-equilibrium deposition method, molecular beam epitaxy (MBE) has the ability to incorporate large amounts of Gd into Bi{sub 2}Te{sub 3} crystal structures. High-quality rhombohedral (Gd{sub x}Bi{sub 1-x}){sub 2}Te{sub 3} films with substitutional Gd concentrations of x {<=} 0.4 were grown by MBE. Angle-resolved photoemission spectroscopy shows that the topological surface state remains intact up to the highest Gd concentration. Magnetoresistance measurements show weak antilocalization, indicating strong spin orbit interaction. Magnetometry reveals that the films are paramagnetic with a magnetic moment of 6.93 {mu}{sub B} per Gd{sup 3+} ion.

• OSTI ID: 22163040
• Journal Information: Applied Physics Letters, Vol. 102, Issue 24; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
BISMUTH TELLURIDES
DEPOSITION
EQUILIBRIUM
GADOLINIUM ADDITIONS
HALL EFFECT
L-S COUPLING
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETORESISTANCE
MOLECULAR BEAM EPITAXY
PARAMAGNETISM
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
SURFACES
THIN FILMS
TRIGONAL LATTICES