Skip to main content

MultiScale Material Science for Energy and Environment

Logo MultiScale Material Science

MultiScale Materials Science for Energy and Environment

  • Home
  • The Lab
  • People
  • Publications
  • News / Events
  • GDRI
  • Home
  • The Lab
    • The Lab
    • Research
    • Education
    • Amazing People
    • Contact
  • People
  • Publications
  • News / Events
    • News
    • Seminars
    • Conferences
    • Winter School
  • GDRI
    • Presentation

Magnetic nanopantograph in the SrCu <sub>2</sub> (BO <sub>3</sub> ) <sub>2</sub> Shastry–Sutherland lattice

TitleMagnetic nanopantograph in the SrCu 2 (BO 3 ) 2 Shastry–Sutherland lattice
Publication TypeJournal Article
Year of Publication2015
AuthorsRadtke G, Saùl A, Dabkowska HA, Salamon MB, Jaime M
JournalProceedings of the National Academy of Sciences
Volume112
Issue7
Pagination 1971-1976
Date PublishedFeb-17-2015
ISSN0027-8424
Abstract

Magnetic materials having competing, i.e., frustrated, interactions can display magnetism prolific in intricate structures, discrete jumps, plateaus, and exotic spin states with increasing applied magnetic fields. When the associated elastic energy cost is not too expensive, this high potential can be enhanced by the existence of an omnipresent magnetoelastic coupling. Here we report experimental and theoretical evidence of a nonnegligible magnetoelastic coupling in one of these fascinating materials, SrCu2(BO3)(2) (SCBO). First, using pulsed-field transversal and longitudinal magnetostriction measurements we show that its physical dimensions, indeed, mimic closely its unusually rich field-induced magnetism. Second, using density functional-based calculations we find that the driving force behind the magnetoelastic coupling is the CuOCu superexchange angle that, due to the orthogonal Cu2+ dimers acting as pantographs, can shrink significantly (0.44%) with minute (0.01%) variations in the lattice parameters. With this original approach we also find a reduction of similar to 10% in the intradimer exchange integral J, enough to make predictions for the highly magnetized states and the effects of applied pressure on SCBO.

URLhttp://www.pnas.org/lookup/doi/10.1073/pnas.1421414112
DOI10.1073/pnas.1421414112
Short TitleProc Natl Acad Sci USA
  • DOI
  • BibTex
  • RIS

Login using Touchstone
  • MIT
  • CNRS
  • INVESTISSEMENT D'AVENIR
  • CINAM
  • MITEI
  • AMU