Hole and electron effective masses in 6H-SiC studied by optically detected cyclotron resonance
2002 (English)In: Materials Science Forum(ISSN 0255-5476), Vols. 389-393, Trans Tech Publications , 2002, Vol. 389-3, 525-528 p.Conference paper (Refereed)
We used optically detected cyclotron resonance (ODCR) at X-band frequency (similar to9.23 GHz) to study the hole effective masses in 6H-SiC. In high-purity 6H-SiC layers, two well-resolved cyclotron resonance (CR) peaks have been observed and attributed to the CR of electrons and holes. In 6H-SiC, the uppermost valence band near its maximum is found to be parabolic with the hole transverse effective mass m(hperpendicular to)=(0.66 +/- 0.02) m(0) and the longitudinal effective mass component M-hparallel to =(1.85 +/- 0.03) m(0). The average of the electron effective mass components in the basal plane-the transversal mass-is determined as m(eperpendicular to)=(0.48 0.02) m(0). With the obtained OJDCR data we can estimate the longitudinal electron effective mass to be in the range 3-6 m(0) depending on the anisotropy of the effective mass in the basal plane.
Place, publisher, year, edition, pages
Trans Tech Publications , 2002. Vol. 389-3, 525-528 p.
band structure, hole and electron effective masses, optically detected cyclotron resonance, polaron effect
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-48812OAI: oai:DiVA.org:liu-48812DiVA: diva2:269708