Pauli Spin Blockade and the Ultrasmall Magnetic Field Effect

Jeroen Danon, Xuhui Wang, Aurelien Manchon

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Based on the spin-blockade model for organic magnetoresistance, we present an analytic expression for the polaron-bipolaron transition rate, taking into account the effective nuclear fields on the two sites. We reveal the physics behind the qualitatively different magnetoconductance line shapes observed in experiment, as well as the ultrasmall magnetic field effect (USFE). Since our findings agree in detail with recent experiments, they also indirectly provide support for the spin-blockade interpretation of organic magnetoresistance. In addition, we predict the existence of a similar USFE in semiconductor double quantum dots tuned to the spin-blockade regime.
Original languageEnglish (US)
JournalPhysical Review Letters
Volume111
Issue number6
DOIs
StatePublished - Aug 6 2013

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