TY  - JOUR
VL  - 110
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
PB  - AMER PHYSICAL SOC
A1  - Boseggia, S
A1  - Springell, R
A1  - Walker, HC
A1  - Ronnow, HM
A1  - Rueegg, C
A1  - Okabe, H
A1  - Isobe, M
A1  - Perry, RS
A1  - Collins, SP
A1  - McMorrow, DF
JF  - Physical Review Letters
Y1  - 2013/03/13/
TI  - Robustness of Basal-Plane Antiferromagnetic Order and the J(eff)=1/2 State in Single-Layer Iridate Spin-Orbit Mott Insulators
AV  - public
N2  - The magnetic structure and electronic ground state of the layered perovskite 
Ba
2
IrO
4
 have been investigated using x-ray resonant magnetic scattering. Our results are compared with those for 
Sr
2
IrO
4
, for which we provide supplementary data on its magnetic structure. We find that the dominant, long-range antiferromagnetic order is remarkably similar in the two compounds and that the electronic ground state in 
Ba
2
IrO
4
, deduced from an investigation of the x-ray resonant magnetic scattering 
L
3
/
L
2
 intensity ratio, is consistent with a 
J
eff
=
1
/
2
 description. The robustness of these two key electronic properties to the considerable structural differences between the Ba and Sr analogues is discussed in terms of the enhanced role of the spin-orbit interaction in 
5
d
 transition metal oxides.
IS  - 11
UR  - https://doi.org/10.1103/PhysRevLett.110.117207
EP  - 5
ID  - discovery10134049
ER  -