Anomalous k-dependent spin splitting in wurtzite AlxGa1-xN/GaN heterostructures
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 75, no 24Article in journal (Refereed) Published
We have observed the k-dependent spin splitting in wurtzite AlxGa1-xN/GaN heterostructures. An anomalous beating pattern was observed in Shubnikov-de Haas measurements due to the interference of Rashba and Dresselhaus spin-orbit interactions. The dominant mechanism for the k-dependent spin splitting at high values of k is attributed to Dresselhaus term which is enhanced by the Delta(C1)-Delta(C3) coupling of wurtzite band folding effect. The interference of Rashba and Dresselhaus effects in the AlxGa1-xN/GaN heterostructure provides a potential candidate for the gate-controlled spin-polarized spintronic devices.
Place, publisher, year, edition, pages
2007. Vol. 75, no 24
magneto-oscillation phenomena, 2-dimensional electron-gas, semiconductors, crystals, systems
IdentifiersURN: urn:nbn:se:kth:diva-16738DOI: 10.1103/PhysRevB.75.245307ISI: 000247625000074ScopusID: 2-s2.0-34347369126OAI: oai:DiVA.org:kth-16738DiVA: diva2:334781
QC 201005252010-08-052010-08-05Bibliographically approved