Spatially resolved magneto-optics on confined systems

Zrenner, A.; Markmann, M.; Paassen, A.; Efros, A. L.; Bichler, Max; Wegscheider, Werner; Böhm, G.; Abstreiter, G.

doi:10.1016/s0921-4526(98)00480-3

Cited by 38 publications

(19 citation statements)

References 19 publications

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“…Optical spectroscopy is then done through one of the holes, while the sample is mounted in the confocal low-temperature microscope (see Ref. 13 for details). The microscope can be operated in a He3 system at temperatures down to 700 mK and magnetic fields up to 15.5 T.…”

Section: Discussionmentioning

confidence: 99%

Spatially resolved spectroscopy on single self-assembled quantum dots

Zrenner

Markmann

Beham

et al. 1999

Journal of Elec Materi

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We report about spatially resolved experiments on self-assembled InGaAs quantum dots. Single quantum dots can be investigated by using STM-induced luminescence spectroscopy. The quantum dot occupancy can be increased via the STM tip current, which results in state filling and therefore in the onset of discrete excited state luminescence. In the limit of low injection currents, a single emission line from the ground state of the dot is observed. Using near-field spectroscopy through shadow masks, we have investigated the optical properties of single self-assembled InGaAs quantum dots as a function of occupancy and magnetic field. This allows us to fully resolve diamagnetic/orbital effects, Zeeman splitting, and to determine manybody-corrections. Photoluminescence excitation spectra further reveal a strong contribution of phonon assisted processes in quantum dot absorption.

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Section: Discussionmentioning

confidence: 99%

Spatially resolved spectroscopy on single self-assembled quantum dots

Zrenner

Markmann

Beham

et al. 1999

Journal of Elec Materi

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“…For this reason the electronic properties of electrons and holes in quantum dots have been investigated theoretically by a number of groups [40,41,57,58,59,60,61] [ 62,63,64]. For a review of experimental results in this domain the reader is referred to the Chapter by Bayer.…”

Section: Multi-exciton Complexesmentioning

confidence: 99%

Electronic Properties of Self-Assembled Quantum Dots

Hawrylak

Korkusiński

2003

Topics in Applied Physics

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Abstract. Theoretical investigation of electronic and optical properties of selfassembled quantum dots is reviewed. The single particle states of lens-shaped, diskshaped, and vertically coupled dots are discussed. The spectrum of a single exciton, the exciton in the presence of many electrons, and many-exciton complexes are covered. The emission, absorption, far infrared spectroscopy, capacitance, photocurrent spectroscopy and inelastic light scattering as a probe of the ground and excited states of quantum dots charged with electrons and excitons are discussed.

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“…Similarly, the optical excitation of a single quantum dot ͑QD͒ results in optical spectra reminiscent of atomic transitions with sharp and spectrally narrow lines. [3][4][5][6][7] The understanding of the complex optical spectra from single dots and their dependence on photoexcitation intensity is, however, still quite poor. The atomiclike lines in the spectra were found to exhibit intriguing red-and blue-shifts, and new features are seen to appear and disappear depending on the number of injected electronhole pairs.…”

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confidence: 99%