Abstract
The isolated susceptibility may be defined as a (nonthermodynamic) average over the canonical ensemble, but while it has often been discussed in the literature, it has not been clearly measured. Here, we demonstrate an unambiguous measurement of at avoided nuclear-electronic level crossings in a dilute spin ice system, containing well-separated holmium ions. We show that quantifies the superposition of quasiclassical spin states at these points and is a direct measure of state concurrence and populations.
- Received 28 February 2021
- Accepted 1 June 2021
DOI:https://doi.org/10.1103/PhysRevB.104.014418
©2021 American Physical Society
Physics Subject Headings (PhySH)
synopsis
A Macroscopic Probe of Quantum States
Published 15 July 2021
A simple measurement of the magnetic susceptibility of a material can reveal the population of specific quantum states in the material.
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