Quench dynamics in spin crossover induced by high pressure

TL;DR

This paper investigates the dynamics of spin crossover under varying pressure conditions, revealing how slow and rapid pressure changes differently influence the transition between high spin and low spin states.

Contribution

It provides an analytical and numerical analysis of spin crossover dynamics under both quasi-static and shock-wave pressure conditions, highlighting the dependence on pressure rate and amplitude.

Findings

Quasi-static pressure induces a complete spin transition from HS to LS.

Shock-wave pressure results in mixed HS and LS states depending on pulse parameters.

The system's final state is sensitive to pressure amplitude and velocity.

Abstract

In this paper we have studied analytically and numerically dynamics of spin crossover induced by time-dependent pressure. We show that quasi static pressure, with a slow dependence on time, yields a spin crossover leading to transition from the state of quantum system with high spin (HS) to the low spin (LS). However, a quench dynamics under shock-wave load is more complicated. The final state of the system depends on the amplitude and pulse velocity, resulting in the mixture of the HS and LS states.