168 citations · 272 across the 10 of their papers we have counts for
10 papers
Hyperfine and crystal field interactions in multiferroic HoCrO
C M N Kumar, Y Xiao, H S Nair +5
We report a comprehensive specific heat and inelastic neutron scattering study to explore the possible origin of multiferroicity in HoCrO. We have performed specific heat measu…
Magnetization distribution and orbital moment in the non-Superconducting Chalcogenide Compound K0.8Fe1.6Se2
S. Nandi, Y. Xiao, Y. Su +7
We have used polarized and unpolarized neutron diffraction to determine the spatial distribution of the magnetization density induced by a magnetic field of 9 T in the tetragonal p…
Inelastic neutron scattering study of crystal field excitations of Nd3+ in NdFeAsO
Y. Xiao, M. Zbiri, R. A. Downie +3
Inelastic neutron scattering experiments were performed to investigate the crystalline electric field (CEF) excitations of Nd3+ (J = 9/2) in the iron pnictide NdFeAsO. The crystal…
Magnetic anisotropic energy gap and low energy spin wave excitation in antiferromagnetic block phase of K2Fe4Se5
Y. Xiao, S. Nandi, Y. Su +11
Neutron scattering experiments were performed to investigate magnetic order and magnetic excitations in ternary iron chalcogenide K2Fe4Se5. The formation of a superlattice structur…
Hyperfine interaction in CoCl investigated by high resolution neutron spectroscopy
Tapan Chatterji, Bernhard Frick
We investigated low energy nuclear spin excitations in the layered compound CoCl by high resolution back-scattering neutron spectroscopy. We detected inelastic peaks at $E = 1.…
Direct observation of low energy nuclear spin excitations in HoCrO by high resolution neutron spectroscopy
T. Chatterji, N. Jalarvo, C. M. N. Kumar +2
We have investigated low energy nuclear spin excitations in strongly correlated electron compound HoCrO. We observe clear inelastic peaks at in both…
Phonon dynamics in SrFe2As2 and SrFeAsF parent pnictide compounds: How different/similar when compared to Ca- and Ba-compounds?
R. Mittal M. Zbiri, S. Rols, Y. Su +9
We report detailed measurements of temperature dependence and ab initio lattice dynamical calculations of the phonon density-of-states of two Sr based iron pnictide parent compound…
Non-stoichiometry and the magnetic structure of Sr2CrO3FeAs
Marcus Tegel, Franziska Hummel, Yixi Su +3
The iron arsenide Sr2CrO3FeAs with the tetragonal Sr2GaO3CuS-type structure was synthesized and its crystal structure re-determined by neutron powder diffraction. In contrast to pr…
Magnetic structure of EuFe2As2 determined by single crystal neutron diffraction
Y. Xiao, Y. Su, M. Meven +9
Among various parent compounds of iron pnictide superconductors, EuFe2As2 stands out due to the presence of both spin density wave of Fe and antiferromagnetic ordering (AFM) of the…
Phonon spectra in CaFe2As2 and Ca0.6Na0.4Fe2As2: Measurement of the pressure and temperature dependence and comparison with ab-initio and shell model calculations
R. Mittal, S. Rols, M. Zbiri +10
We report the pressure and temperature dependence of the phonon density-of-states in superconducting Ca0.6Na0.4Fe2As2 (Tc=21 K) and the parent compound CaFe2As2, using inelastic ne…