The most profound consequence of the spin-orbit interaction in layered iridates is the realization of a recently proposed Jeff= 1/2 insulating state, which explains novel insulating behavior observed in the Srn+1IrnO3n+1 materials. We review the basic physical properties of layered iridates, including our recent transport and thermodynamic data for Srn+1IrnO3n+1 (n = 1, 2). These results indicate the spin-orbit interaction vigorously competes with Coulomb interactions, non-cubic crystal electric field interactions, and the Hund’s rule coupling, which leads to states wiThexotic properties that are highly susceptible to small perturbations. The effects of chemical doping, application of pressure and magnetic field are emphasized; these perturbations are relatively weak, but capable of influencing the spin-orbit interaction and generating a rich phase diagram of strongly competing ground states.
|Title of host publication||Frontiers of 4d- and 5d-Transition Metal Oxides|
|Number of pages||48|
|State||Published - Jan 1 2013|
Bibliographical notePublisher Copyright:
© 2013 by World Scientific Publishing Co. Pte. Ltd. All rights reserved.
ASJC Scopus subject areas
- Engineering (all)
- Materials Science (all)
- Physics and Astronomy (all)