Critical Crossover Between Yosida-Kondo Dominant Regime and Magnetic Frustration Dominant Regime in the System of a Magnetic Trimer on a Metal Surface

TL;DR

This study uses Quantum Monte Carlo simulations to explore phase transitions in a magnetic trimer system on a metal surface, revealing a critical crossover between Yosida-Kondo and magnetic frustration regimes influenced by geometric configuration.

Contribution

It demonstrates a controllable transition between two magnetic phases in a trimer system by altering its geometric arrangement, providing insights into magnetic frustration and Kondo effects.

Findings

Identification of two distinct magnetic phases.

Observation of a critical transition induced by geometry change.

Spectral density and susceptibility confirm phase crossover.

Abstract

Quantum Monte Carlo simulations were carried out for the system of a magnetic trimer on a metal surface. The magnetic trimer is arranged in two geometric configurations, viz., isosceles and equilateral triangles. The calculated spectral density and magnetic susceptibility show the existence of two phases: Yosida-Kondo dominant phase and magnetic frustration dominant phase. Furthermore, a critical transition between these two phases can be induced by changing the configuration of the magnetic trimers from isosceles to equilateral triangle.