Berry-phase in a periodically driven single molecule magnet transistor

TL;DR

This paper investigates how Berry phase interference affects electron conductance in a driven single molecule magnet transistor, revealing oscillations caused by time-periodic potentials and magnetic fields.

Contribution

It introduces a method to detect Berry phase oscillations in conductance due to periodic driving and magnetic field interference in a single molecule magnet transistor.

Findings

Zero transmission resonances oscillate with magnetic field due to Berry phase.

Berry phase oscillations are detectable in conductance at specific electron energies.

Time-periodic potentials induce quantum tunneling path interference effects.

Abstract

We consider the electron transport through a single molecule magnet transistor in the presence of a local transverse magnetic field and ac-driven gate voltage. We calculate the conductance as a function of the electron energy and transverse magnetic field by using the Floquet and Landauer formalism. We show that the time periodic potential causes zero transmission resonances that oscillate as a function of the transverse magnetic field due to the Berry phase interference associated with two quantum tunneling paths. We find that these Berry phase oscillations can be detected in the conductance as a function of the transverse magnetic field for an incoming electron with a specific energy.