32 datasets found

We propose to investigate the high energy magnetic spectrum in Fe1.07Te. We have previously investigated the fluctuations in Fe1.14Te in the incommensurate phase and have found...

The aim of our experiment is to map out the excitation spectrum of the recently-discovered superconducting AxFe2Se2 system for energy transfers of up to 250 meV. This...

The solution of the Anderson lattice model (ALM) leads to two renormalized bands near EF with an energy gap due to hybridization between the 4f- and conduction electrons. The...

We will search for spin-orbit transitions of the Co3+ ions in LaCoO3. The ground state is a non-magnetic singlet, but there continues to be a debate about the nature of the...

following on the success of measuring the electronic excitation in NiO using MAPS, we wish to make similar but more extended measurements of the electronic excitations in CoO...

We propose to investigate the spin dynamics in the Ortho-II order YBCO6.5 superconductor at energies above 100 meV. This study will be aimed at searching for the broadening of...

This proposal requests 3 days on Maps to investigate the nature of local structure and proton sites in the proton conducting brownmillerite system Ba2In1.85M0.15O6H2 (M = In,...

The proposal aims to investigate the formation of magnetic stripes in La2-xSrxCoO4. Recent measurements have revealed an hourglass magnetic spectrum at x=1/3. The question we...

LiFeAs is one of the newly discovered FeAs superconductors with still large T_c of 18K. First inelastic neutron scattering experiments on powder and on single-crystalline...

The proposal aims to further investigate the transition from commensurate magnetic order to incommensurate magnetic and charge stripe order in the family of compounds,...

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...

Inelastic neutron scattering has been used to study adsorbed species on catalysts for more than 30 years. All of this work has one feature in common: they are all ¿snapshots¿ of...

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...

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...

CePd3 is a classic intermediate valence (IV) system. In MAPS experiment 620167 we obtained an important qualitative result for CePd3, namely that the Kondo-like scattering...

We propose to study two single crystals with nominal compositions Fe1.07Te and Fe1.18Te using the MAPS spectrometer. The amount of interstitial Fe controls the material¿s...

We propose to study the spin wave excitations of nonsuperconducting single crystal Pr0.88LaCe0.12CuO4 (PLCCO). Previous experiments on superconducting PLCCO have shown that spin...

The present proposal is part of a larger EPSRC project advancing the vibrational spectroscopy of silicate glasses. The project involves the techniques of IR and Raman...

The colossal magnetoresistance effect in manganites arises from a competition between delocalisation, which favours a ferromagnetic metallic phase, and localisation of electons...

The newly discovered AxFe2-ySe2 (A=K,Rb,Cs) compounds have attracted great interests because of their parent compounds are insulators instead of being metallic [2-6]....