Strain control of electric and magnetic properties in the iridate heterostructure
ORAL
Abstract
The promising quantum phenomena in Ruddlesden-Popper series iridates (Srn+1IrnO3n+1) have made them a playground to study exotic electronic and magnetic properties. The competition between crystal field splitting, Coulomb repulsion, and spin-orbit coupling in comparable energy scales allows minimal structural and electronic perturbations to drastically alter their ground states. While the bulk Srn+1IrnO3n+1 crystals offer limited structural flexibility, the choice of the artificially stacked [(SrIrO3)n , (SrTiO3)] superlattices can elevate structural tuning of the competing interactions to a higher degree. In our recent work, we have synthesized a series of [(SrIrO3)n , (SrTiO3)] superlattices with various lattice mismatch. Results from structural characterization, transport measurements and magnetic moment measurement indicate strong structural modulability of macroscopic electronic and magnetic properties in the iridates.
*J.L. acknowledges the support by the Science Alliance Joint Directed Research & Development Program and the Transdisciplinary Academy Program at the University of Tennessee，DOD-DARPA under Grant No. HR0011-16-1-0005.
–
Presenters
-
Junyi Yang
- Univ of Tennessee, Knoxville
- University of Tennessee