Landau level spectrum in a two-dimensional hole gas in C-doped (100) GaAs/Al0.4Ga0.6As square quantum well

Yuan, Z. Q.; Du, R. R.; Manfra, M. J.; Pfeiffer, L. N.; West, K. W.
February 2009
Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG
Academic Journal
We study the Landau level spectrum of a two-dimensional hole gas in carbon δ-doped (100) GaAs/Al0.4Ga0.6As square quantum well (width of 15 nm) by means of microwave cyclotron resonance (CR) and tilted field magnetotransport. Only one type of hole, with an effective mass of 0.4me, was detected in CR. By analyzing the spin-splitting level coincident conditions at B∼1 T, we find that the effective g-factor is large enough to cause Landau level crossing even in zero tilt, and the product of gm* increases with total magnetic field.


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