BibTex format
@article{Das:2018:10.1103/PhysRevX.8.011048,
author = {Das, L and Forte, F and Fittipaldi, R and Fatuzzo, CG and Granata, V and Ivashko, O and Horio, M and Schindler, F and Dantz, M and Tseng, Y and McNally, DE and Rønnow, HM and Wan, W and Christensen, NB and Pelliciari, J and Olalde-Velasco, P and Kikugawa, N and Neupert, T and Vecchione, A and Schmitt, T and Cuoco, M and Chang, J},
doi = {10.1103/PhysRevX.8.011048},
journal = {Physical Review X},
pages = {1--9},
title = {Spin-orbital excitations in Ca2RuO4 revealed by resonant inelastic x-ray scattering},
url = {http://dx.doi.org/10.1103/PhysRevX.8.011048},
volume = {8},
year = {2018}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - The strongly correlated insulator Ca2RuO4 is considered as a paradigmatic realization of both spin-orbital physics and a band-Mott insulating phase, characterized by orbitally selective coexistence of a band and a Mott gap. We present a high resolution oxygen K-edge resonant inelastic X-ray scattering study of the antiferromagnetic Mott insulating state of Ca2RuO4. A set of low-energy (about 80 and 400 meV) and high-energy (about 1.3 and 2.2 eV) excitations are reported, which show strong incident light polarization dependence. Our results strongly support a spin-orbit coupled band-Mott scenario and explore in detail the nature of its exotic excitations. Guided by theoretical modeling, we interpret the low-energy excitations as a result of composite spin-orbital excitations. Their nature unveils the intricate interplay of crystal-field splitting and spin-orbit coupling in the band-Mott scenario. The high-energy excitations correspond to intra-atomic singlet-triplet transitions at an energy scale set by Hund's coupling. Our findings give a unifying picture of the spin and orbital excitations in the band-Mott insulator Ca2RuO4.
AU - Das,L
AU - Forte,F
AU - Fittipaldi,R
AU - Fatuzzo,CG
AU - Granata,V
AU - Ivashko,O
AU - Horio,M
AU - Schindler,F
AU - Dantz,M
AU - Tseng,Y
AU - McNally,DE
AU - Rønnow,HM
AU - Wan,W
AU - Christensen,NB
AU - Pelliciari,J
AU - Olalde-Velasco,P
AU - Kikugawa,N
AU - Neupert,T
AU - Vecchione,A
AU - Schmitt,T
AU - Cuoco,M
AU - Chang,J
DO - 10.1103/PhysRevX.8.011048
EP - 9
PY - 2018///
SN - 2160-3308
SP - 1
TI - Spin-orbital excitations in Ca2RuO4 revealed by resonant inelastic x-ray scattering
T2 - Physical Review X
UR - http://dx.doi.org/10.1103/PhysRevX.8.011048
UR - https://journals.aps.org/prx/abstract/10.1103/PhysRevX.8.011048
VL - 8
ER -