Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots

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Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots. / Rudner, Mark Spencer; Levitov, Leonid.

In: Physical Review Letters, Vol. 110, No. 8, 086601, 20.02.2013.

Research output: Contribution to journal › Letter › Research › peer-review

Harvard

Rudner, MS & Levitov, L 2013, 'Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots', Physical Review Letters, vol. 110, no. 8, 086601. https://doi.org/10.1103/PhysRevLett.110.086601

APA

Rudner, M. S., & Levitov, L. (2013). Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots. Physical Review Letters, 110(8), [086601]. https://doi.org/10.1103/PhysRevLett.110.086601

Vancouver

Rudner MS, Levitov L. Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots. Physical Review Letters. 2013 Feb 20;110(8). 086601. https://doi.org/10.1103/PhysRevLett.110.086601

Author

Rudner, Mark Spencer ; Levitov, Leonid. / Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots. In: Physical Review Letters. 2013 ; Vol. 110, No. 8.

Bibtex

@article{6946407e6ba74b50a1e823c00c6f40d2,
title = "Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots",
abstract = "Early experiments on spin-blockaded double quantum dots revealed robust, large-amplitude current oscillations in the presence of a static (dc) source-drain bias. Despite experimental evidence implicating dynamical nuclear polarization, the mechanism has remained a mystery. Here we introduce a minimal albeit realistic model of coupled electron and nuclear spin dynamics which supports self-sustained oscillations. Our mechanism relies on a nuclear spin analog of the tunneling magnetoresistance phenomenon (spin-dependent tunneling rates in the presence of an inhomogeneous Overhauser field) and nuclear spin diffusion, which governs dynamics of the spatial profile of nuclear polarization. The proposed framework naturally explains the differences in phenomenology between vertical and lateral quantum dot structures as well as the extremely long oscillation periods.",
author = "Rudner, {Mark Spencer} and Leonid Levitov",
year = "2013",
month = feb,
day = "20",
doi = "10.1103/PhysRevLett.110.086601",
language = "English",
volume = "110",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "8",

}

RIS

TY - JOUR

T1 - Self-Sustaining Dynamical Nuclear Polarization Oscillations in Quantum Dots

AU - Rudner, Mark Spencer

AU - Levitov, Leonid

PY - 2013/2/20

Y1 - 2013/2/20

N2 - Early experiments on spin-blockaded double quantum dots revealed robust, large-amplitude current oscillations in the presence of a static (dc) source-drain bias. Despite experimental evidence implicating dynamical nuclear polarization, the mechanism has remained a mystery. Here we introduce a minimal albeit realistic model of coupled electron and nuclear spin dynamics which supports self-sustained oscillations. Our mechanism relies on a nuclear spin analog of the tunneling magnetoresistance phenomenon (spin-dependent tunneling rates in the presence of an inhomogeneous Overhauser field) and nuclear spin diffusion, which governs dynamics of the spatial profile of nuclear polarization. The proposed framework naturally explains the differences in phenomenology between vertical and lateral quantum dot structures as well as the extremely long oscillation periods.

AB - Early experiments on spin-blockaded double quantum dots revealed robust, large-amplitude current oscillations in the presence of a static (dc) source-drain bias. Despite experimental evidence implicating dynamical nuclear polarization, the mechanism has remained a mystery. Here we introduce a minimal albeit realistic model of coupled electron and nuclear spin dynamics which supports self-sustained oscillations. Our mechanism relies on a nuclear spin analog of the tunneling magnetoresistance phenomenon (spin-dependent tunneling rates in the presence of an inhomogeneous Overhauser field) and nuclear spin diffusion, which governs dynamics of the spatial profile of nuclear polarization. The proposed framework naturally explains the differences in phenomenology between vertical and lateral quantum dot structures as well as the extremely long oscillation periods.

U2 - 10.1103/PhysRevLett.110.086601

DO - 10.1103/PhysRevLett.110.086601

M3 - Letter

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 8

M1 - 086601

ER -

ID: 90871700