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Low-energy spin excitations in Ni over-doped NaFe0.7Ni0.3As
The discovery of iron-based superconductors gives a new horizon to study unconventional superconductivity. Typically iron-based superconductors can be created by doping (i.e.... -
Helimagnetic correlations in FeCl3
The recent discovery of skyrmions and skyrmion lattices in materials with no inversion symmetry and their corresponding potential applications of Skyrmions in magnetic... -
Incommensurate magnetic fluctuation in KFe2As2
The debate whether interband or intraband scattering is crucial for Fe-based superconductors is not settled down yet. Investigation a system with completely missing electron... -
Resonant Spin Excitation in Single Crystal of Ba0.3K0.7Fe2As2
We recently observed a resonant spin excitation in Ba1-xKxFe2As2 (x=0.4), one of the newly discovered iron arsenide superconductors with Tc=38K, on MERLIN. This demonstrates... -
Magnetic excitation of Ca2RuO4 in pressure induced ferromagnetic phase
Recently, a novel type of Bose-Einstein condensation (BEC) of spin-orbit excitons has been proposed in Mott insulator Ca2RuO4. In the recent INS study, we have observed... -
Dynamic spin correlation length in the hedgehog spin vortex phase and superco...
Magnetism is believed to play an important role in many quantum phenomena such as superconductivity and nematicity in iron-based superconductors. One of the signatures is that... -
Incommensurate magnetic fluctuation in KFe2As2 at high energy
We clearly observed incommensurate (IC) magnetic excitation in KFe2As2 above Tc with Ei=80 mev on ARCS at ORNL. Though we got beam time at LET, we wish to see how the IC changes... -
Magnetic excitations in Ca3(Ru[1-x]Ti[x])2O7: Investigating the role of SOC i...
With this experiment we aim to investigate the role of spin orbit coupling (SOC) in 4d transition metal oxides.In previous inelastic neutron scattering experiments on the parent... -
Energy dependence of the quais_ferromagnetic fluctuations in the superconduct...
Sr2RuO4 is a superconductor with a layered perovskite structure. It is isostructural with the high-Tc cuprate superconductor La2-xSrxCuO4; however, the superconductivity in... -
Spinwaves excitations in the zigzag spin chain compound beta-CaCr2O4
The S=3/2 zigzag chain antiferromagnet beta-CaCr2O4 exhibits broad spinwave excitations at low temperature, related to an incommensurate magnetic order that sets at TN = 21K.... -
High Energy Magnetic Excitations in Fe(Se,Te)
In our recent experiments on MERLIN we have established that the spin excitations in Fe(Se,Te) emanating from incommensurate positions near (0.5 0.5 0) extends at least to 250... -
Origin of the magnetism in heavily electron-doped iron-selenide superconductor
Elucidating the nature of magnetism in a high temperature superconductor is important. Our previous neutron measurements at low temperature revealed a resonance mode at Q = (pi,... -
Test of FERNS CCR at low temperatures on MERLIN
This dataset has no description
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Spin excitations in Rb0.8Fe1.7Se2-xTex with Tc=20K
The alkaline iron selenide RbFe1.6+xSe2 superconductors are a new system of iron-based superconductor with Tc up to 32K. According to recent experimental results, the... -
Exploration of possible spin-charge ordered phases in La2-xBaxCoO4 (x=1/3 and...
This is a proposal to measure the magnetic spectrum of single crystal La2-xBaxCoO4 for the first time. The isostructural layered cobaltates with Sr and Ca instead of Ba have... -
Spin excitations and the resonance mode in KxFe2−δSe2
Recently, a new family of Fe-based superconductors has been discovered. Kx Fe2−δSe2 (KFS) is a strongly electron-doped compound with 122-type structure that is... -
High Energy Spin Fluctuations in BaFe1.9Ni0.1As2
There has been much research into the recently discovered iron based superconductors, but so far only the magnetic excitations at low energy have been investigated. We propose... -
Spin excitations in the superconducting FeTe0.6Se0.4
The FeTe1-xSex series exhibits superconductivity over a broad range of doping. Previously we have made extensive neutron scattering measurements on superconducting x = 0.49 and... -
High-energy spin excitations in the optimally doped Ba0.67K0.33Fe2As2
From our previous data on BaFe2As2 and BaFe1.9Ni0.1As2, one may assume that the superconductivity only affects the low energy excitations. But for Ba0.67K0.33Fe2As2, the doping... -
Orbital selective neutron spin resonance in underdoped Ba(Fe0.952Co0.048)2As2
The microscopic origin of neutron spin resonance remains one of the major debates in iron-based superconductors. The spin resonance in iron pnictides is generally interpreted as...