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Superconductivity and magnetism in novel iron-based superconductors
Magnetism and superconductivity compete and coexist in many of the high temperature superconductors, and the newly discovered iron arsenides are no exception. Muon-spin rotation... -
Two Band Behaviour of the Superconductivity of Lu2Fe3Si5
RE2Fe3Si5 are unusual superconducting systems, with coexistence of magnetism on the RE site with superconductivity ( the Fe does not support a magnetic moment). Of particular... -
Multistage magnetic transitions in the coupled trimer system Ba4NbMn3O12
During the past decades, weakly coupled spin cluster systems have attracted much attention due to the possibility of observing concomitantly zero-dimensional quantum and... -
Electric field dependence of the crossover from band to thermally assisted tr...
Organic semiconductors have been of major interest in recent years. Amplified by the transition from fundamental physics to new commercial products and technologies, this new... -
Phonon density of states in W, Mo, Nb-doped CaMnO3 thermoelectric ceramics
Thermoelectric materials are able to directly convert a difference of temperature into electricity and vice-versa. Hence, they can be employed either in energy harvesting from... -
Isolating exchange pathways in novel molecular magnets
Experimentally exploring the fascinating physics of one- and two-dimensional magnetism continues to rely on the synthesis of novel, model systems with highly anisotropic... -
Magnetic order in weakly coupled molecular magnetic systems
Two molecular magnetic systems are considered which show low-temperature ordered states. One of them is F4BImNN, a nitronyl nitroxide radical magnet, an excellent realization of... -
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... -
A muon spin rotation/relaxation study of superconductivity in the noncentrosy...
Noncentrosymmetric superconductors have been identified as good candidates for unconventional superconductivity. In particular, there is the possibility of Cooper pairs with... -
Relaxation plateau in the breathing pyrochlore antiferromagnet LiIn0.05Ga0.95...
In physics, frustration describes a situation where a system is unable to satisfy all of its internal interactions because of the geometry of its atomic structure. The most... -
MuSR study on spin liquid candidate NaYbSe2 with triangular lattice
The quantum spin liquid (QSL) is a long-standing attractive topic in condensed matter physics due to its tight relation to exotic properties such as high temperature... -
Investigating magnetic ordering through μSR study in spin-chain Cu(NH3)4...
By the virtue of having an entangled ground state the Heisenberg spin ½ chain systems provide a suitable perform to test multi-qubit quantum information protocols. There have... -
Spin dynamics of Ce in the Noncentrosymmetric Heavy-Fermion Superconductors C...
In centrosymmetric heavy-fermion (HF) superconductors Cooper pairs have either singlet or triplet symmetry. Recently a handful of non-centrosymmetric Ce-based HF compounds have... -
Fluorine-arsenide superconductors
A new family of FeAs superconductors have very recently (Autumn 2008) been discovered in which, rather than alternating rare earth oxide layers with FeAs layers (as for the new... -
Investigating spin dynamics in spinel spin ice with musr and high freqeuncy s...
Spin ice materials exhibit novel magnetic behaviour because of their atomic interactions and geometric constraints of the crystal lattice. This novel behaviour takes the form of... -
Electric field control in Multiferroic PbFe(1/2)Nb(1/2)O3
Lead iron niobate, PbFe${1/2}$Nb${1/2}$O$_{3}$ (PFN), is a multiferroic material exhibiting paraelectric to ferroelectric and paramagnetic to G-type antiferromagnetic... -
High Field muSR of Dy2Ti2O7 along [111]: Investigating a partial magnetizatio...
Dy2Ti2O7 is a pyrochlore antiferromagnet that has a partial magnetization plateau between 0.1 and 0.9T for magnetic fields applied along the [111] direction. This represents a... -
Order and dynamics in S=1 Ni-based molecular magnets
Recent progress in the field of molecular magnetism has shown the clear potential for gaining control over the structural building blocks of molecular materials in order to... -
Longitudinal relaxation measurements in the ferromagnetic phase of the superc...
We aim to perform zero and longitudinal field muon spin relaxation measurements in order to investigate anomalous spin dynamics effects observed in EuFe2(As1-xPx)2 with x=0.20... -
Doping effects in a S = 1/2 spin ladder system near quantum criticality
Spin ladders are excellent model systems for studying quantum phase transitions, as they exhibit a quantum critical point between non-magnetic spin singlet dimers to Néel...