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8 papers · 1 filter
Spin-3/2 physics of semiconductor hole nanowires: Valence-band mixing and tunable interplay between bulk-material and orbital bound-state spin splittings
D. Csontos, P. Brusheim, U. Zuelicke +1
We present a detailed theoretical study of the electronic spectrum and Zeeman splitting in hole quantum wires. The spin-3/2 character of the topmost bulk-valence-band states result…
Raman spectroscopy of (K,Na)NbO3 and ((K,Na)1-xLix)NbO3
H. J. Trodahl, N. Klein, D. Damjanovic +4
A Raman scattering spectroscopy study is reported through all four phases of a (K0.5Na0.5)NbO3 crystal and ((K0.5Na0.5)1-xLix)NbO3 for x=0.02 and 0.03. The transitions among the fe…
Hole spin relaxation in -type GaAs quantum wires
C. Lü, U. Zülicke, M. W. Wu
We investigate the spin relaxation of -type GaAs quantum wires by numerically solving the fully microscopic kinetic spin Bloch equations. We find that the quantum-wire size infl…
Lande-like formula for the g factors of hole-nanowire subband edges
D. Csontos, U. Zülicke, P. Brusheim +1
We have analyzed theoretically the Zeeman splitting of hole-quantum-wire subband edges. As is typical for any bound state, their g factor depends on both an intrinsic g factor of t…
Band structure of ZnO from resonant x-ray emission spectroscopy
A. R. H. Preston, B. J. Ruck, L. F. J. Piper +7
Soft x-ray emission and absorption spectroscopy of the O K-edge are employed to investigate the electronic structure of wurtzite ZnO(0001). A quasiparticle band structure calculate…
Near-Zero Moment Ferromagnetism in the Semiconductor SmN
C. Meyer, B. J. Ruck, J. Zhong +4
The magnetic behaviour of SmN has been investigated in stoichiometric polycrystalline films. All samples show ferromagnetic order with Curie temperature (T_c) of 27 +/- 3 K, eviden…