Holes localized in nanostructures in an external magnetic field: g-factor and mixing of states

Semina, M. A.; Suris, R. A.

doi:10.1134/s1063782615060214

Cited by 23 publications

(19 citation statements)

References 29 publications

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“…The energy dependence of the longitudinal hole g factors has been described applying the theoretical model of Refs. [33,34], which has allowed us to estimate the QD parameters: size and composition. In particular, it is shown that with increasing emission energy, the height-to-diameter ratio of the QDs increases while the indium content in QD decreases.…”

Section: Discussionmentioning

confidence: 99%

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Large anisotropy of electron and holegfactors in infrared-emitting InAs/InAlGaAs self-assembled quantum dots

et al. 2016

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A detailed study of the g-factor anisotropy of electrons and holes in InAs/In0.53Al0.24Ga0.23As selfassembled quantum dots emitting in the telecom spectral range of 1.5−1.6 µm (around 0.8 eV photon energy) is performed by time-resolved pump-probe ellipticity technique using a superconducting vector magnet. All components of the g-factor tensors are measured, including their spread in the quantum dot (QD) ensemble. Surprisingly, the electron g factor shows a large anisotropy changing from ge,x = −1.63 to ge,z = −2.52 between directions perpendicular and parallel to the dot growth axis, respectively, at an energy of 0.82 eV. The hole g-factor anisotropy at this energy is even stronger: |g h,x | = 0.64 and |g h,z | = 2.29. On the other hand, the in-plane anisotropies of electron and hole g factors are small. The pronounced out-of-plane anisotropy is also observed for the spread of the g factors, determined from the spin dephasing time. The hole longitudinal g factors are described with a theoretical model that allows us to estimate the QD parameters. We find that the QD height-to-diameter ratio increases while the indium composition decreases with increasing QD emission energy.

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Section: Discussionmentioning

confidence: 99%

“…In panel (b) the solid line shows the calculated longitudinal hole g factor using the model of Refs. [33,34]. Inset shows the corresponding calculated dependencies of the height-to-diameter ratio (solid line, left axis) and the indium content (dashed line, right axis) on the QD emission energy.…”

Section: Energy Dependencementioning

confidence: 99%

Large anisotropy of electron and holegfactors in infrared-emitting InAs/InAlGaAs self-assembled quantum dots

et al. 2016

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“…It is seen from Fig. 3 that LL are essentially non-equidistant and nonlinearly depend on the magnetic field that is caused by the mixed nature of the H1 and H2 subbands in the inverted-band regime due to a coupling between heavy-hole to light-particle states both at finite in-plane wave vectors k k (at B = 0) 16,17 and under the action of a magnetic field. 11 For the H1 subband, only the lowest Landau level (N = −2↓) contains pure heavy-hole states, which do not mix with the lightparticle states 11…”

Section: The Landau Level Fan Diagrammentioning

confidence: 99%

Quasiclassical calculations of Landau level spectrum for 20.5-nm-wide H gTe quantum well: “extremum loop” model and effects of cubic symmetry

Gudina

Bogolubskiy

Neverov

et al. 2021

Low Temperature Physics

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Quasiclassical calculations of the effective cyclotron mass and the spectrum of Landau levels have been carried out for carriers of the sizequantized H2 subband with a nonmonotonic dispersion law, which forms a valence band of 20.5-nm-wide HgTe quantum well with an inverted band structure. The model of the so-called "extremum loop", previously developed by Rashba and Sheka for semiconductors with a wurtzite lattice, has been used for calculations. The results obtained are compared both with the empirical picture and with quantummechanical calculations of the Landau level spectrum for the HgTe quantum well in the semimetallic phase.

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“…Some extra analysis is required to determine the signs of the g-tensor components. The sign is defined in such a way that when a magnetic field is applied along a certain axis and the state with a negative total-momentum projection onto this axis is the ground state, the g-factor is considered to be positive [31].…”

Section: A Sign Assignmentmentioning

confidence: 99%

Active tuning of the g -tensor in InGaAs/GaAs quantum dots via strain

et al. 2019

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show abstract

Holes localized in nanostructures in an external magnetic field: g-factor and mixing of states

Cited by 23 publications

References 29 publications

Large anisotropy of electron and holegfactors in infrared-emitting InAs/InAlGaAs self-assembled quantum dots

Large anisotropy of electron and holegfactors in infrared-emitting InAs/InAlGaAs self-assembled quantum dots

Quasiclassical calculations of Landau level spectrum for 20.5-nm-wide H gTe quantum well: “extremum loop” model and effects of cubic symmetry

Active tuning of the g -tensor in InGaAs/GaAs quantum dots via strain

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