164 citations · 845 across the 20 of their papers we have counts for
20 papers
Fe substitution in URuSi: singlet magnetism in an extended Doniach phase diagram
Andrea Marino, Denise S. Christovam, Chun-Fu Chang +13
The application of pressure as well as the successive substitution of Ru with Fe in the hidden order (HO) compound URuSi leads to the formation of the large moment antiferr…
Imaging emergent exotic quasiparticle state in a frustrated transition metal oxide
Yuita Fujisawa, Anjana Krishnadas, Chia-Hsiu Hsu +10
The existence of rich Fermiology in anomalous metal phase in exotic superconductors has attracted considerable interests, as exemplified in copper, iron-based, and intermetallic fr…
Hidden Hydroxides in KOH-Grown BaNiO3 Crystals: A Potential Link to Their Catalytic Behavior
Lun Jin, Haozhe Wang, Xianghan Xu +10
The hexagonal perovskite BaNiO3, prepared via non-ceramic approaches, is known to act as a good catalyst for the oxygen-evolution reaction (OER) in alkaline media. Here we report o…
Spin State Disproportionation in Insulating Ferromagnetic LaCoO3 Epitaxial Thin Films
Shanquan Chen, Jhong-Yi Chang, Qinghua Zhang +14
The origin of insulating ferromagnetism in epitaxial LaCoO3 films under tensile strain remains elusive despite extensive research efforts have been devoted. Surprisingly, the spin…
CaCuRuO: a high Kondo-temperature transition metal oxide
D. Takegami, C. Y. Kuo, K. Kasebayashi +26
We present a comprehensive study of CaCuRuO using bulk sensitive hard and soft x-ray spectroscopy combined with local-density approximation (LDA) + dynamical mean-fi…
Charge disproportionation and nano phase separation in SrNiO
H. Guo, Z. W. Li, C. F. Chang +16
We have successfully grown centimeter-sized layered SrNiO single crystals under high oxygen pressures of 120 bar by the floating zone technique. This enabled us to perform n…
Nature of the magnetism of iridium in the double perovskite Sr2CoIrO6
S. Agrestini, K. Chen, C. -Y. Kuo +12
We report on our investigation on the magnetism of the iridate double perovskite SrCoIrO, a nominally Ir Van Vleck system. Using x-ray absorption (XAS) a…
Probing the ground state and the Van Vleck paramagnetism of the Ir ions in the layered SrCoIrO
S. Agrestini, C. -Y. Kuo, K. Chen +11
We report a combined experimental and theoretical x-ray magnetic circular dichroism (XMCD) spectroscopy study at the Ir- edges on the Ir ions of the layered hybrid…
Strain induced changes of electronic properties of B-site ordered double perovskite SrCoIrO thin films
S. Esser, C. F. Chang, C. -Y. Kuo +10
B-site ordered thin films of double perovskite SrCoIrO were epitaxially grown by a metal-organic aerosol deposition technique on various substrates, actuating different str…
Intricacies of the Co spin state in SrCoIrO: an x-ray absorption and magnetic circular dichroism study
S. Agrestini, C. -Y. Kuo, D. Mikhailova +8
We report on a combined soft x-ray absorption and magnetic circular dichroism (XMCD) study at the Co- on the hybrid 3/5 solid state oxide SrCoIrO…
Antiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO
H. Guo, Z. W. Li, L. Zhao +10
The material class of rare earth nickelates with high Ni oxidation state is generating continued interest due to the occurrence of a metal-insulator transition with charge o…
Electronically highly cubic conditions for Ru in alpha-RuCl3
S. Agrestini, C. -Y. Kuo, K. -T. Ko +11
We studied the local Ru 4d electronic structure of alpha-RuCl3 by means of polarization dependent x-ray absorption spectroscopy at the Ru-L2,3 edges. We observed a vanishingly smal…
Ba2NiOsO6: A Dirac-Mott insulator with ferromagnetism near 100 K
Hai L. Feng, Stuart Calder, Madhav Prasad Ghimire +14
The ferromagnetic semiconductor Ba2NiOsO6 (Tmag ~100 K) was synthesized at 6 GPa and 1500 °C. It crystallizes into a double perovskite structure [Fm-3m; a = 8.0428(1) Å], where the…
Long-range interactions in the effective low energy Hamiltonian of Sr2IrO4: a core level resonant inelastic x-ray scattering study
S. Agrestini, C. -Y. Kuo, M. Moretti Sala +12
We have investigated the electronic structure of Sr2IrO4 using core level resonant inelastic x-ray scattering. The experimental spectra can be well reproduced using ab initio densi…
Mn3TeO6 - A New Multiferroic Material with Two Magnetic Substructures
L. Zhao, Z. Hu, C. Y. Kuo +4
From magnetic susceptibility, dielectric permittivity, electric polarization and specific heat measurements, we discover spin-induced ferroelectricity and magnetoelectric coupling…
Electronic and Spin States of SrRuO3 Thin Films: an X-ray Magnetic Circular Dichroism Study
S. Agrestini, Z. Hu, C. -Y. Kuo +14
We report a study of the local magnetism in thin films of SrRuO3 grown on (111) and (001) oriented SrTiO3 substrates using x-ray magnetic circular dichroism spectroscopy (XMCD) at…
State of Co and Mn in half-metallic ferromagnet CoMnSi explored by magnetic circular dichroism in hard X-ray photoelectron emission and soft X-ray absorption spectroscopies
Gerhard H. Fecher, Daniel Ebke, Siham Ouardi +8
The half-metallic Heusler compound CoMnSi is a very attractive material for spintronic devices because it exhibits very high tunnelling magnetoresistance ratios. This work repo…
k=0 magnetic structure and absence of ferroelectricity in SmFeO3
C. -Y. Kuo, Y. Drees, M. T. Fernández-Díaz +17
SmFeO3 has attracted considerable attention very recently due to the reported multiferroic properties above room-temperature. We have performed powder and single crystal neutron di…
Structure and Properties of α-NaFeO2-type Ternary Sodium Iridates
Kristen Baroudi, Cindi Yim, Hui Wu +15
The synthesis, structure, and elementary magnetic and electronic properties are reported for layered compounds of the type Na3-xMIr2O6 and Na3-xM2IrO6, where M is a transition meta…
Spectroscopic evidence for giant orbital moment and magnetic anisotropy induced by local distortions in alpha-CoV2O6
N. Hollmann, S. Agrestini, Z. Hu +9
We present a combined experimental and theoretical study on the local magnetism of the Co ions in the spin-chain compound CoV2O6, which crystallizes in two different allotropic pha…