Related Experiment Video
Updated: Aug 29, 2026

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots
Published on: November 1, 2013
Pulsed optically detected NMR of single GaAs/AlGaAs quantum wells
Marcus Eickhoff1, Dieter Suter
1Universität Dortmund, Fachbereich Physik, 44221 Dortmund, Germany. marcus.eickhoff@uni-dortmund.de
Abstract:
While nuclear magnetic resonance (NMR) is one of the most important experimental tools for the analysis of bulk materials, the low sensitivity of conventional NMR makes it unsuitable for the investigation of small structures. We introduce an experimental scheme that makes NMR spectra of single, nanometer-sized quantum wells possible with excellent sensitivity and selectivity while avoiding the spectral broadening associated with some alternative techniques. The scheme combines optical pumping and pulsed radiofrequency excitation of the nuclei with time-resolved detection of the free induction decay through the polarization of the photoluminescence.
Related Concept Videos
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
NMR Spectroscopy: Spin–Spin Coupling
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are slanted or...

