Unveiling hidden multipolar orders with magnetostriction

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 29
  • Download : 0
Broken symmetries in solids involving higher order multipolar degrees of freedom are historically referred to as "hidden orders" due to the formidable task of detecting them with conventional probes. In this work, we theoretically propose that magnetostriction provides a powerful and novel tool to directly detect higher-order multipolar symmetry breaking-such as the elusive octupolar order-by examining scaling behaviour of length change with respect to an applied magnetic field h. Employing a symmetry-based Landau theory, we focus on the family of Pr-based cage compounds with strongly correlated f-electrons, Pr(Ti,V,Ir)(2) (Al, Zn)(20), whose low energy degrees of freedom are purely higher-order multipoles: quadrupoles O-20,O-22 and octupole T (xyz). We demonstrate that a magnetic field along the [111] direction induces a distinct linear-in-h length change below the octupolar ordering temperature. The resulting "magnetostriction coefficient" is directly proportional to the octupolar order parameter, thus providing clear access to such subtle order parameters.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2019-09
Language
English
Article Type
Article
Citation

NATURE COMMUNICATIONS, v.10

ISSN
2041-1723
DOI
10.1038/s41467-019-11913-3
URI
http://hdl.handle.net/10203/267745
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0