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Frustration, quantum spin ices and quantum diffusion
This proposal aims to characterise the spin dynamics of three Pr-based pyrochlores that may be realisations of quantum spin ice materials. The lower moment and larger wave... -
Spin dynamics in Sn-doped Er2Ti2-xSnxO7: probing the putative quantum critica...
The frustrated pyrochlore Er2Ti2O7 is a rare example of a magnetic system in which quantum fluctuations are capable of selecting a unique ground state out of the macroscopically... -
Detecting an entanglement transition in a quantum magnet
Justification: We'd like to apply for three days Director’s Discretionary time on WISH to continue the experiment on measures of quantum entanglement in a model 1D magnet. This... -
Measurement of gravitation-induced quantum interference
We propose to perform accurate measurements of the quantum gravitational effect for OffSpec. We would like to investigate if a similar discrepancy between quantum system gravity... -
Magnetic order and low-energy fluctuations in a frustrated square lattice qua...
This proposal is part of our research programme to investigate quantum magnets on frustrated lattices in search for novel types of magnetic order and spin dynamics. Here we... -
Magnetic order in the triangular quantum magnet AgNiO2
This proposal is part of our research programme on spin and orbital order in frustrated systems. AgNiO2 has a layered crystal structure with Jahn-Teller active Ni3+ ions forming... -
Kagome quantum spin liquids - The case of Vesignieite
We aim to explore the groundstate of a new near-perfect S=1/2 kagome antiferromagnetic (KAFM) system using MuSR at the lowest possible temperatures. The title compound is... -
Magnetism in a charge doped cuprate chain
We have recently succeeded in measuring the excitation spectrum of charge doped cuprate chains with a 90 degree Cu-O-Cu bonding geometry. This study resolved a long standing... -
Temperature dependence of spin dynamics near quantum criticality in an Ising ...
This proposal is part of our research programme to explore the interplay of thermal and quantum fluctuations near zero-temperature quantum phase transitions. Here we plan to use... -
Studying the limits of the quantum Griffiths phase in Ni,V
A randomly diluted ferromagnet has its transition temperature Tc suppressed to a quantum critical point. Between the Tc of the diluted material and that of the undiluted... -
The XY pyrochlore AFM:spin dynamics upon rare-earth dilution in Er2Ti2O7 (CON...
Er2Ti2O7 constitutes an experimental realization of the <111> easy-plane pyrochlore AFM and orders at 1.1 K into the theoretically predicted spin structure. However, the... -
Spin fluctuations in the hyperkagome quantum antiferromagnet Na4Ir3O8
Spins arranged on the kagome lattice are one of the most widely investigated topics in frustrated magnetism. In this context, the three-dimensional analogue of these systems,... -
One- and multi-magnon excitations in a strong-leg quantum spin ladder
We propose to measure the one- and multi-magnon excitations in the first realization of a S=1/2 quantum spin ladder in the strong-leg regime. Our material, DIMPY, has very well... -
Magnetic excitations in the quantum spin ice Yb2Ti2O7
We propose to carry out an inelastic neutron scattering experiment at LET to investigate the excitations in the quantum spin ice Yb2Ti2O7. In contrast to other single crystal... -
Investigation of the excitation spectrum in the 1D distorted diamond chain Az...
We propose to investigate the excitation spectrum of azurite in both zero field and applied fields up to 7T. Using inelastic neutrons on OSIRIS we hope to clearly resolve the... -
Proton quantum delocalization in lithium imide studied through neutron Compto...
we propose deep inelastic neutron scattering measurements on VESUVIO to investigate the short time proton dynamics in Li2NH. The latter belongs to the Li-H-N system, which has... -
Pressure induced quantum criticality in iron-based superconductors
Unconventional superconductivity can be induced in the vicinity of quantum critical point as a consequence of suppression of long range magnetic ordering as function of control... -
Doping-induced energy gap in a quantum spin chain
SrCuO2 is a prototypical S = 1/2 antiferromagnetic (AF) Heisenberg 1D spin chain system. High-resolution neutron scattering studies has already successfully revealed the gapless... -
The proton quantum states of the amorphous ices (MARI)
While we now have a complete picture of the average local and intermediate structures of the various amorphous ices, their dynamic behaviour (glass transition and defect... -
SR study near the ferromagnetic quantum critical point in CePd1-xRhx ...
Rcently the NFL behaviour near an antiferromagnetic quantum critical point (AFQCP) has been investigated extensively. Very recently, we have investigated, for the first time,...