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[摘要]:We study the Landau level spectrum of a two-dimensional hole gas in carbon delta-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 0.4m(e), was detected in CR. By analyzing the spin-splitting level coincident conditions at B similar to 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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