Abstract
Optically detected microwave resonance spectra of MBE-grown InAs/GaAs quantum dots (QD) was obsd. The signal is detected via modulation of the total intensity of the QD emission induced by W-band (95 GHz) microwave excitation. ODMR lines are obsd. at higher fields when the static field is either parallel or perpendicular to the growth direction, with hole g-values |gh,.dblvert.| = 3.9 and |gh,.perp.| = 3.0, resp. These broad ODMR lines are tentatively attributed to hole spin transitions. A strongly anisotropic low-field transition is ascribed to cyclotron resonance (CR), corresponding to an effective mass of 0.059 m0.
Original language | English |
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Pages (from-to) | 551-554 |
Journal | Physica Status Solidi B |
Volume | 224 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2001 |