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

Abstract

Quantum Monte Carlo simulations were carried out for a 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 regimes: the Yosida–Kondo dominant regime and magnetic frustration dominant regime. Furthermore, a critical crossover between these two regimes can be induced by changing the configuration of magnetic trimers from an isosceles triangle to an equilateral triangle.