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arXiv · 1904.11221

Double Quantum Dot scenario for spin resonance in current noise

Baruch Horovitz·Anatoly Golub
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Abstract

We show that interference between parallel currents through two quantum dots, in presence of spin orbit interactions and strong on-site Coulomb repulsion, leads to resonances in current noise at the corresponding Larmor frequencies. An additional resonance at the difference of Larmor frequencies is present even without spin-orbit interaction. The resonance lines have strength comparable to the background shot noise and therefore can account for the numerous observations of spin resonance in STM noise with non-polarized leads. We solve also several other models that show similar resonances.

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Baruch Horovitz, Anatoly Golub. 2021-02-21. Double Quantum Dot scenario for spin resonance in current noise. https://doi.org/10.1103/physrevb.99.241407

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