Matías G. Gonzalez

collaborators

4 papers

cond-mat.str-el2026

Sign-optimized Quantum Monte Carlo

Julius S. Herz, Robin SchÃ¤fer, MatÃas G. Gonzalez +1

The sign problem breaks the polynomial scaling of Quantum Monte Carlo methods. We alleviate it by rotation of the local basis of the Hilbert space, such that the phase of off-diago…

cond-mat.str-el2026

Reentrant behavior and possible $2/3$ magnetization plateau on the double-trillium langbeinite K $_{2}$ Ni $_{2}$ (SO $_{4}$ ) $_{3}$

MatÃas G. Gonzalez, Matías G. Gonzalez, Yurii Skourski +3

K $_{2}$ Ni $_{2}$ (SO $_{4}$ ) $_{3}$ is a member of the langbeinite family, consisting of two intertwined $S = 1$ trillium lattices, out of which one is strongly coupled (strong-TL) and the other…

cond-mat.str-el2025

Spin Liquids on the Tetratrillium Lattice

MatÃas G. Gonzalez, Johannes Reuther

The tetratrillium lattice has recently been proposed as responsible for the dynamical properties observed in the $S = 1$ langbeinite compound K $_{2}$ Ni $_{2}$ (SO $_{4}$ ) $_{3}$ . Here, we study…

cond-mat.str-el2025

Anharmonic Collective Oscillations in Isotropic Spin Systems and their Spectroscopic Signatures

Anna Fancelli, MatÃas G. Gonzalez, Subhankar Khatua +4

Spin waves are the fundamental excitations in magnetically ordered spin systems and are ubiquitously observed in magnetic materials. However, the standard understanding of spin wav…

Sign-optimized Quantum Monte Carlo

Reentrant behavior and possible 2/3 magnetization plateau on the double-trillium langbeinite K2​Ni2​(SO4​)3​

Spin Liquids on the Tetratrillium Lattice

Anharmonic Collective Oscillations in Isotropic Spin Systems and their Spectroscopic Signatures

Reentrant behavior and possible $2/3$ magnetization plateau on the double-trillium langbeinite K $_{2}$ Ni $_{2}$ (SO $_{4}$ ) $_{3}$