140 citations · 572 across the 16 of their papers we have counts for
16 papers
Magnetically induced metal-insulator transition in Pb2CaOsO6
Henrik Jacobsen, Hai L. Feng, Andrew J. Princep +14
We report on the structural, magnetic, and electronic properties of two new double-perovskites synthesized under high pressure; Pb2CaOsO6 and Pb2ZnOsO6. Upon cooling below 80 K, Pb…
Room-temperature ferrimagnetism of anti-site-disordered Ca2MnOsO6
Hai L. Feng, Madhav Prasad Ghimire, Zhiwei Hu +18
Room-temperature ferrimagnetism was discovered for the anti-site-disordered perovskite Ca2MnOsO6 with Tc = 305 K. Ca2MnOsO6 crystallizes into an orthorhombic structure with a space…
Study of polycrystalline bulk SrOsO double-perovskite insulator: comparison with 1000 K ferromagnetic epitaxial films
Jie Chen, Hai L. Feng, Yoshitaka Matsushita +5
Polycrystalline SrOsO, which is an ordered double-perovskite insulator, is synthesized via solid-state reaction under high-temperature and high-pressure conditions of 1200…
Magnetic ordering and ferroelectricity in multiferroic 2H-AgFeO2: Comparison between hexagonal and rhombohedral polytypes
Noriki Terada, Dmitry D. Khalyavin, Pascal Manuel +2
Magnetic and dielectric properties of the hexagonal triangular lattice antiferromagnet 2H-AgFeO2 have been studied by neutron diffraction, magnetic susceptibility, specific heat, p…
Evolution of the magnetic excitations in NaOsO through its metal-insulator transition
James G Vale, Stuart Calder, Christian Donnerer +8
The temperature dependence of the excitation spectrum in NaOsO through its metal-to-insulator transition (MIT) at 410 K has been investigated using resonant inelastic…
Crossover from itinerant to localized magnetic excitations through the metal-insulator transition in NaOsO
J. G. Vale, S. Calder, C. Donnerer +8
NaOsO undergoes a metal-insulator transition (MIT) at 410 K, concomitant with the onset of antiferromagnetic order. The excitation spectra have been investigated throu…
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…
Strongly Gapped Spin-Wave Excitation in the Insulating Phase of NaOsO3
S. Calder, J. G. Vale, N. Bogdanov +13
NaOsO3 hosts a rare manifestation of a metal-insulator transition driven by magnetic correlations, placing the magnetic exchange interactions in a central role. We use resonant ine…
Giant spin-phonon-electronic coupling in a 5d oxide
S. Calder, J. H. Lee, M. B. Stone +8
Enhanced coupling of material properties offers new fundamental insights and routes to multifunctional devices. In this context 5d oxides provide new paradigms of cooperative inter…
Superconductivity suppression of Ba0.5K0.5Fe2-2xM2xAs2 single crystals by substitution of transition-metal (M = Mn, Ru, Co, Ni, Cu, and Zn)
Jun Li, Yanfeng Guo, Shoubao Zhang +12
We investigated the doping effects of magnetic and nonmagnetic impurities on the single-crystalline p-type Ba0.5K0.5Fe2-2xM2xAs2 (M = Mn, Ru, Co, Ni, Cu and Zn) superconductors. Th…
Magnetically driven metal-insulator transition in NaOsO3
S. Calder, V. O. Garlea, D. F. McMorrow +10
The metal-insulator transition (MIT) is one of the most dramatic manifestations of electron correlations in materials. Various mechanisms producing MITs have been extensively consi…
Linear decrease of critical temperature with increasing Zn substitution in the iron-based superconductor BaFe1.89-2xZn2xCo0.11As2
Jun Li, Yanfeng Guo, Shoubao Zhang +5
The nonmagnetic impurity effect is studied on the Fe-based BaFe1.89Co0.11As2 superconductor (Tc = 25 K) with Zn substitution for Fe up to 8 at. %, which is achieved by means of hig…
Sr3Co2O6: a possible frustrated spin-chain material
X. X. Wang, J. J. Li, Y. G. Shi +9
A dense phase of a post-layered perovskite Sr3Co2O6 was created by a high-pressure and high-temperature synthetic route and quenched to ambient conditions. The structure of Sr3Co2O…
Striking Zn impurity effect on the Fe-based superconductor BaFe1.87Co0.13As2
J. J. Li, Y. F. Guo, S. B. Zhang +4
Nonmagnetic impurity effect was studied on the n-type Fe-based superconductor BaFe1.87Co0.13As2 (Tc = 25 K) by a successful Zn substitution for Fe up to 7 at.%. Magnetic susceptibi…
Synthesis, Structural and magnetic properties of the solid solution (CuCl1-xBrx)LaNb2O7 (0<x<1)
Yoshihiro Tsujimoto, Atsushi Kitada, Hiroshi Kageyama +8
The two-dimensional (2D) quantum spin system (CuCl)LaNb2O7 has a spin-singlet ground state with a gap of 2.3 meV, while the isostructural material (CuBr)LaNb2O7 displays collinear…
SR studies of the frustrated quasi-2d square-lattice spin system Cu(Cl,Br)La(Nb,Ta)O: evolution from spin-gap to antiferromagnetic state
Y. J. Uemura, A. A. Aczel, Y. Ajiro +15
We report muon spin relaxation (SR) and magnetic susceptibility measurements on Cu(Cl,Br)La(Nb,Ta)O, which demonstrate: (a) the absence of static magnetism in (CuCl)…