Nuclear magnetic resonance inverse spectra of InGaAs quantum dots: Atomistic level structural information

Abstract

A wealth of atomistic information is contained within a self-assembled quantum dot (QD), associated with its chemical composition and the growth history. In the presence of quadrupolar nuclei, as in InGaAs QDs, much of this is inherited to nuclear spins via the coupling between the strain within the polar lattice and the electric quadrupole moments of the nuclei. Here, we present a computational study of the recently introduced inverse spectra nuclear magnetic resonance technique to assess its suitability for extracting such structural information. We observe marked spectral differences between the compound InAs and alloy InGaAs QDs. These are linked to the local biaxial and shear strains, and the local bonding configurations. The cation-alloying plays a crucial role especially for the arsenic nuclei. The isotopic line profiles also largely differ among nuclear species: While the central transition of the gallium isotopes have a narrow linewidth, those of arsenic and indium are much broader and oppositely skewed with respect to each other. The statistical distributions of electric field gradient (EFG) parameters of the nuclei within the QD are analyzed. The consequences of various EFG axial orientation characteristics are discussed. Finally, the possibility of suppressing the first-order quadrupolar shifts is demonstrated by simply tilting the sample with respect to the static magnetic field.

arXiv commentPublished version, 17 pages, 18 figures

References in corpus (17)

• The nitrogen-vacancy colour centre in diamond
• Experimental realization of Shor's quantum factoring algorithm using nuclear magnetic resonance
• Nuclear spin physics in quantum dots: an optical investigation
• Long-lived memory for mesoscopic quantum bits
• Knight Field Enabled Nuclear Spin Polarization in Single Quantum Dots
• Dynamic nuclear spin polarization in resonant laser spectroscopy of a quantum dot
• Stabilizing effect of nuclear quadrupole interaction on the polarization of electron-nuclear spin system in a quantum dot
• High resolution nuclear magnetic resonance spectroscopy of highly-strained quantum dot nanostructures
• Quadrupolar spectra of nuclear spins in strained InGaAs quantum dots
• Theoretical study of nuclear spin polarization and depolarization in self-assembled quantum dots
• Full coherent control of nuclear spins in an optically pumped single quantum dot
• Theory of dynamic nuclear polarization and feedback in quantum dots
• Manipulation of the nuclear spin ensemble in a quantum dot with chirped magnetic resonance pulses
• General theory of feedback control of a nuclear spin ensemble in quantum dots
• Optically tunable nuclear magnetic resonance in a single quantum dot
• Selective Dynamic Nuclear Spin Polarization in Spin-Blocked Double-Dot
• Nuclear magnetic resonances in (In,Ga)As/GaAs quantum dots studied by resonant optical pumping

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• Approaching a fully-polarized state of nuclear spins in a semiconductor quantum dot
• Cross-calibration of GaAs deformation potentials and gradient-elastic tensors using photoluminescence and nuclear magnetic resonance spectroscopy in GaAs/AlGaAs quantum dot structures
• Reconstruction of nuclear quadrupole interaction in (In,Ga)As/GaAs quantum dots observed by transmission electron microscopy
• Long-time coherence in fourth-order spin correlation functions
• Nuclear spin squeezing via electric quadrupole interaction
• All-optical noise spectroscopy of a solid-state spin
• Probing strain modulation in a gate-defined one dimensional electron system
• Loschmidt echo driven by hyperfine and electric-quadrupole interactions in nanoscale nuclear spin baths
• Cat-state generation and stabilization for a nuclear spin through electric quadrupole interaction
• Wavelet-resolved coherence beats in the Overhauser field of a thermal nuclear spin ensemble
• Direct high resolution resonant Raman scattering measurements of InAs quantum dot dynamic nuclear spin polarization states
• Truncated Wigner approximation for the bosonic model of large spin baths
• Influence of quadrupolar interaction on NMR spectroscopy