Rice University

Events at Rice

Seminar

Physics & Astronomy

Speaker: Stephen Wilson
University of California at Santa Barbara

Condensed Matter - FILLING DRIVEN COLLAPSE OF THE SPIN-ORBIT ASSISTED MOTT STATE IN Sr3Ir2O7

Monday, February 13, 2017
4:00 PM  to 5:00 PM

300  Brockman Hall for Physics
Rice University
6100 Main St
Houston, Texas, USA

The interplay between strong spin-orbit coupling and on-site Coulomb repulsion has led to a variety of novel states in 5d transition metal oxide systems. Iridium oxides in particular have proven to be a rich materials regime where many of these new electronic states have been both theoretically predicted and experimentally observed. One of these states is a unique manifestation of Mott physics, the spin-orbit Mott state, which arises out an approximate J=1/2 ground state wave function and is forecast to be the parent state for a number of exotic electronic responses. High temperature superconductivity, giant magnetoelectric responses, and new topological electronic states are just a few examples of ground states and phase behaviors proposed in close proximity to the spin-orbit Mott phase. In this talk, I will discuss our work exploring how a manifestation of this spin-orbit Mott state in the weak limit collapses upon carrier substitution into a correlated metallic state. In particular, I will focus on the influence of electron (La) doping into a bilayer member of the Ruddlesden-Popper series of strontium iridates, Sr3Ir2O7, which rests on the edge of a bandwidth-driven Mott metal-insulator transition. The presence of a competing electronic instability and unconventional metallic state in the phase diagram of (Sr1-xLax)3Ir2O7 will be discussed.

<<   June 2017   >>
S M T W T F S
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30

Search for Events


Quicklinks