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Optically detected cyclotron resonance investigations on 4H and 6H SiC: Band-structure and transport properties
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Functional Electronic Materials.ORCID iD: 0000-0002-6405-9509
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2000 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 61, no 7, 4844-4849 p.Article in journal (Refereed) Published
Abstract [en]

We present experimental data on the band-structure and high-mobility transport properties of 6H and 4H-SiC epitaxial films based on optically detected cyclotron resonance investigations. From the orientational dependence of the electron effective mass in 6H-SiC we obtain direct evidence for the camels back nature of the conduction band between the M and L points. The broadening of the resonance signal in 4H-SiC as a function of temperature is used to extract information on electron mobilities and to conclude on the role of the different scattering mechanisms. Under high microwave powers an enhancement of the electron effective mass is found which is explained by a coupling of the electrons with longitudinal optical phonons. ⌐2000 The American Physical Society.

Place, publisher, year, edition, pages
2000. Vol. 61, no 7, 4844-4849 p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-45127Local ID: 79775OAI: diva2:265989
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2013-10-02

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