Evaluation of minority and majority spin band energies of ferromagnetic GdN thin film using optical absorption spectroscopy

Journal Article · Wed Dec 04 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4848417· OSTI ID:22261841

Vidyasagar, R.; Yoshitomi, H.; Kitayama, S.; Kita, T. ^[1]; Ohta, H. ^[2]; Sakurai, T. ^[3]

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1. Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University 567-8501 (Japan)
2. Molecular Photoscience Research Center and Graduate School of Science, Kobe University 567-8501 (Japan)
3. Center for Support to Research and Education Activities, Kobe University 657-8501 (Japan)

Temperature dependent optical Tauc plots of AlN/GdN/AlN heterostructures have showed two optically induced transitions, and those optical transitions could be attributed to the minority and majority spin band energy. In contrast, temperature dependent magnetization measurements of GdN thin film provide direct evidence of spin ordering below 39 K, and which is also evidenced by Arrott plots.

• OSTI ID: 22261841
• Journal Information: AIP Conference Proceedings, Vol. 1566, Issue 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTROSCOPY
ALUMINIUM NITRIDES
GADOLINIUM NITRIDES
MAGNETIZATION
SPIN
TEMPERATURE DEPENDENCE
THIN FILMS