# Landau-Zener transition in a continuously measured single-molecule spin transistor

## TL;DR

This study investigates the Landau-Zener transition in a single-molecule spin transistor under continuous measurement, revealing dephasing effects at high sweep rates and modeling them with an adiabatic master equation.

## Contribution

It demonstrates how continuous measurement influences Landau-Zener dynamics in a single-molecule magnet, introducing a novel simulation approach with time-averaged dephasing operators.

## Key findings

- Deviations from closed system behavior increase with sweep rate.
- Dephasing explains low-conductance limit deviations.
- Simulation with adiabatic master equation matches experimental data.

## Abstract

We monitor the Landau-Zener dynamics of a single-ion magnet in a spin-transistor geometry. For increasing field-sweep rates, the spin reversal probability shows increasing deviations from that of a closed system. In the low-conductance limit, such deviations are shown to result from a dephasing process. In particular, the observed behaviors are succesfully simulated by means of an adiabatic master equation, with time averaged dephasing (Lindblad) operators. The time average is tentatively interpeted in terms of the finite time resolution of the continuous measurement.