Spin-state mixing in InAs double quantum dots

2007/04/07 by A. Pfund, Ivan Shorubalko, I. Shorubalko +3 · 2 citations
Engineering · Physics and Astronomy · #Atomic physics #Condensed matter physics #Excited state #Hyperfine structure #Mixing (physics) #Pauli exclusion principle #Physics #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #Singlet state #Spectroscopy #Spin (aerodynamics) #Spin–orbit interaction #Triplet state #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.76.161308

published as Phys. Rev. B 76, 161308(R) (2007) · 5 pages, 4 figures

arxiv created 2007/04/07 · openalex publication_date 2007/10/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We quantify the contributions of hyperfine and spin-orbit-mediated singlet-triplet mixing in weakly coupled InAs quantum dots by electron transport spectroscopy in the Pauli spin-blockade regime. In contrast to double dots in GaAs, the spin-orbit coupling is found to be more than two orders of magnitudes larger than the hyperfine mixing energy. It is already effective at magnetic fields of a few mT, where deviations from pure hyperfine mixing are observed.

Citations

• Suppression of Spin Relaxation in an InAs Nanowire Double Quantum Dot
• Nucleus-mediated spin-flip transitions in GaAs quantum dots
• Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field

Cited by

• Single-electron shell occupation and effectivegfactor in few-electron nanowire quantum dots
• PROTECTIVE EFFECT OF LEYK ON LEUCOPENIA DURING RADIOTHERAPY.
• Control of the two-electron exchange interaction in a nanowire double quantum dot
• Few-Electron Single and Double Quantum Dots in an InAs Two-Dimensional Electron Gas