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26 papers · 2 filters
Spin and charge excitations in the correlated multiband metal Ca3Ru2O7
J. Bertinshaw, M. Krautloher, H. Suzuki +5
We use Ru -edge resonant inelastic x-ray scattering (RIXS) to study the full range of excitations in CaRuO from meV-scale magnetic dynamics through to the eV-scale…
Sizeable suppression of thermal Hall effect upon isotopic substitution in strontium titanate
Sangwoo Sim, Heejun Yang, Ha-Leem Kim +4
We report measurements of the thermal Hall effect in single crystals of both pristine and isotopically substituted strontium titanate. We discovered a two orders of magnitude diffe…
Antiferromagnetic Kitaev interaction in $J_\rm{eff}=1/2$ cobalt honeycomb materials NaCoSbO and NaCoTeO
Chaebin Kim, Jaehong Jeong, Gaoting Lin +8
Finding new materials with antiferromagnetic (AFM) Kitaev interaction is an urgent issue to broaden and enrich the quantum magnetism research significantly. By carrying out inelast…
Role of generic scale invariance in a Mott transition from a U(1) spin-liquid insulator to a Landau Fermi-liquid metal
Jinho Yang, Iksu Jang, Jae-Ho Han +1
We investigate the role of generic scale invariance in a Mott transition from a U(1) spin-liquid insulator to a Landau Fermi-liquid metal, where there exist massless degrees of fre…
Field-induced quantum spin disordered state in spin-1/2 honeycomb magnet Na2Co2TeO6
Gaoting Lin, Jaehong Jeong, Chaebin Kim +25
Spin-orbit coupled honeycomb magnets with the Kitaev interaction have received a lot of attention due to their potential of hosting exotic quantum states including quantum spin liq…
Novel =3/2 Metallic Phase and Unconventional Superconductivity in GaTaSe
Min Yong Jeong, Seo Hyoung Chang, Hyeong Jun Lee +10
By means of density functional theory plus dynamical mean-field theory (DFT+DMFT) calculations and resonant inelastic x-ray scattering (RIXS) experiments, we investigate the high-p…