Controllable quantum spin glasses with magnetic impurities embedded in quantum solids

TL;DR

This paper proposes a new platform using dysprosium atoms in solid helium to realize and study controllable dipolar quantum spin glasses, with potential for tunable quantum phase transitions.

Contribution

It introduces a novel system of magnetic impurities in quantum solids for simulating and controlling quantum spin glass phases.

Findings

Phase diagram of the dysprosium in solid helium system

Feasibility of realizing quantum spin glass phases

Methods for detecting spin glass and antiglass phases

Abstract

Magnetic impurities embedded in inert solids can exhibit long coherence times and interact with one another via their intrinsic anisotropic dipolar interaction. We argue that, as a consequence of these properties, disordered ensembles of magnetic impurities provide an effective platform for realizing a controllable, tunable version of the dipolar quantum spin glass seen in LiHo$_x$Y$_{1-x}$F$_4$. Specifically, we propose and analyze a system composed of dysprosium atoms embedded in solid helium. We describe the phase diagram of the system and discuss the realizability and detectability of the quantum spin glass and antiglass phases.