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High-energy excitations in charge and orbital ordered La0.5Sr1.5MnO4
The colossal magnetoresistance effect in manganites arises from a competition between delocalisation, which favours a ferromagnetic metallic phase, and localisation of electons... -
Magnetic excitations in mesoporous hematite
We have recently prepared mesoporous forms of various metals oxides. In some cases the imposition of a mesostructure changes other properties of the material significantly. One... -
Search for molecular quantization of spin and lattice excitations in the geom...
Geometric frustration is widely accepted as a paradigm to bring out a novel paramagnetic state. Quasielastic paramagnetic scattering has been studied by neutron scattering so... -
Study of a spin gap and CEF excitations in the caged compounds CeT2Al10 (T=Fe...
This proposal was submitted on MERLIN (RB1010206) and beam time was allocated on MARI. We have carried out low energy measurements on MARI and found a clear evidence of the spin... -
Spin excitations in La2CoO4
We will use MAPS to measure the complete spin excitation spectrum of the quasi-two-dimensional S=3/2 antiferromagnet La2CoO4. The measurement is motivated by recent observations... -
Magnetic excitations in a pure Fe3+ pyrochlore lattice (FeF3) ¿ A classic spi...
We propose to study the powder averaged spin fluctuations in a S=5/2 pryochlore - FeF3. Previous studies, corroborated by our own diffraction work on WISH, have measured that... -
Study of vibron stability in CeCuxAl4-x, 0.7x1.1 through inel...
Considering interesting physical properties observed in CeCuxAl4-x our aim is to investigate the stability of vibron excitations, already observed in CeCuAl3, as a function of... -
Crystal field and magnetic excitations of the non-centrosymmetric heavy-fermi...
Several non-centrosymmetric heavy-fermion compounds have been reported to exhibit unconventional superconductivity (SC). For example, both CeRhSi3 and CeIrSi3 order... -
Magnetic excitations of SrV10O15
Recently, new type of frustrated magnets, BaV10O15 and SrV10O15, were found to exhibit interesting phenomena due to mixed valence ions forming a modified triangular lattice.... -
Magnetic excitations in CrB2
CrB2, like MnB2, are transition metal diborides that have magnetically ordered ground states. Preliminary neutron (TAS) work and in house lab indicated that the dispersion has... -
Copy of: Magnetic excitations in the one dimensional (1D) spin-chain systems:...
The spin-chain systems with general formula A¿3ABO6, crystallizing in the K4CdCl6 type structure has attracted a lot attention in recent years due to geometrical frustration... -
Magnetic excitations in SrEr2O4
In SrEr2O4 the magnetic Er ions are linked through a network of triangles and hexagons, where geometrical frustration can arise, provided that some exchange interactions are... -
Magnetic excitations in the S=1/2 ferromagnetic semiconductor Lu2V2O7
Lu2V2O7 is a rare example of an S=1/2 pyrochlore. The fact that it is a ferromagnet with Tc=70 K belies the fact that it has some truly remarkable properties. These include the... -
The collective spin excitations in the electron-doped superconductor BaFe2-xC...
We propose to measure the collective spin excitations over a wide energy range in BaFe2-xCoxAs2 (x=0.22). This compound is one of the FeAs based superconductors which have... -
Low energy excitations in solid 4He
The atoms in solid helium are weakly bound and have small mass so that the overlap of their wave functions (zero point motion) is large, making it a quantum solid close to the... -
Low energy excitations in PrPtAl
Magnetically modulated structures have been predicted to form close to quantum critical points in a number of recent theories, although there are no experimental examples of... -
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... -
Temperature dependence on mangetic excitations from the high Tc cuprate BSCCO
We plan to continue inelastic neutron scattering measurements on the high Tc cuprate superconductor BSCCO with optimum doping. In the proposed experiment, we will have about 40... -
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... -
Magnetic excitations in Strontium Erbium Oxide
In SrEr2O4 the magnetic Er ions are linked through a network of triangles and hexagons, where geometrical frustration can arise, provided that some exchange interactions are...