Distinguishing dipolar and octupolar quantum spin ices*

Quantum spin liquids (QSLs) and Multipolar ordered states (MPOs) both share the property of being notoriously difficult to detect with conventional probes. Recently, the existence of two distinct quantum spin liquids, dipolar QSL (d-QSL) and octupolar QSL (o-QSL) was proposed in a class of pyrochlore materials. However, how to distinguish them has been an open question due to the difficulty in detecting the multipolar nature of such quantum spin liquids. Motivated by this situation, we investigate the possibility of distinguishing them by using a lattice-based technique. In this talk, we theoretically propose that a magnetostriction measurement can be used as a powerful tool to access the novel properties of multipolar-based quantum spin liquids.