# 30 datasets found

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## Quantum renormalisation of spin waves in a square lattice antiferromagnet

The two dimensional Heisenberg antiferromagnet on a square lattice is one of the most studied model in quantum magnetism . This is in part due to its intrinsic interest but also... -
## Excitations of the Zeeman ladder in a transverse field in the Ising antiferro...

The excitations of an Ising antiferromagnetic chain have been studied in the past and are known to form either continuous spectrum or Zeeman ladders. Such a system can be... -
## Quantum dynamics in a J_eff=1/2 isotropic triangular-lattice antiferromagnet ...

This proposal is part of our research programme to explore the spin dynamics of strongly-frustrated quantum magnets. A canonical model is the spin-1/2 triangular antiferromagnet... -
## The anisotropy of the spin fluctuations in the electron nematic phase of Sr3R...

New electronic phases often emerge in the proximity of a quantum critical point (QCP) - that is the point where the transition temperature of a collective phase transition is... -
## Quantum and thermal critical scaling in XY-dipolar antiferromagnet LiErF4

We have established the material LiErF4 as a dipolar antiferromagnet with planar anisotropy, exhibiting both classical and quantum phase transitions. Where, thermal transition... -
## Inelastic neutron scattering investigation of the giant phonon anomalies due ...

The electron-phonon interaction is a major factor influencing the competition between collective instabilities in correlated-electron materials, but its role in driving... -
## Non-magnetic impurities in a strong-leg spin ladder

Th S = ½ AF spin ladder is one of the most important models in quantum magnetism. While its properties throughout the (H,T)-phase diagram may be considered to be well understood... -
## Quasielastic intensity distribution and dispersion of low-energy magnetic exc...

In a number of recent experiments on the pure CeB6 compound, we have revealed strong quasielastic inten-sity in the normal (paramagnetic) state with a rich momentum-space... -
## Investigation of a Potential realization of the Nersesyan-Tsvelik Model in (N...

We propose to investigate the highly one-dimensional (1D) S=1/2 Heisenberg antiferromagnet (NO)[Cu(NO3)3] which is a potential realization of the Nersesyan-Tsvelik model. The... -
## Neutron scattering study on the honeycomb Heisenberg-Kitaev magnet alpha-RuCl3

The experimental realization of a Heisenberg-Kitaev model on the honeycomb lattice has been a major topic in a condensed matter physics, because the model predict a novel... -
## Temperature driven spin incoherence and criticality in the Luttinger liquid p...

We propose an experiment on the low energy spectrometer LET to study temperature effects on the Luttinger liquid (LL) phase on the spin ladder geometry. The spin ladder material... -
## 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... -
## Pressure-induced O(2) quantum phase transition in a quantum antiferromagnet

Quantum phase transitions (QPT) continue to attract the attention of experimentalists and theorists alike. Experiments on quantum magnets have been crucial to understand their... -
## Dirac Point and Topological Triplon Bands in the Shastry-Sutherland Material ...

SrCu$_2$(BO$_3$)$_2$ (SCBO) is a very much studied quantum magnet that is most well known for its ground state of coupled singlets and multiple magnetization plateaux. Recently,... -
## Hard-Axis Ordering in Ferromagnetic CeAgSb2

We propose to study the low-energy spin fluctuations in ferromagnetic metal CeAgSb2. The ordered moment is oriented away from the direction favored by the lattice. Recent... -
## Magnetic excitation spectra in the field induced quantum phases of the quasi-...

We propose to investigate the magnetic excitation spectra in the three accessible magnetic ordered phases of the quasi-1D S-1/2 Ising-like antiferromagnet SrCo2V2O8 by single... -
## Phonon dispersions in CDW material Na2Ti2Sb2O

Na2Ti2Sb2O has a CDW transition around 120 K . It has a tetragonal structure with alternate layers of Ti2Sb2O2- and Na+ double layer. Interestingly, the Ba1-xNaxTi2Sb2O system... -
## Evidence for long-range order in HoTbTi2O7

Evidence of long-range order has been observed in the diffuse neutron scattering data for a single crystal of HoTbTi2O7.A spin ice like pattern and pinch points coexist with the... -
## Magnetic Excitations in the Shastry-Sutherland magnet; Neodymium Tetraboride

We are proposing to investigate the magnetic excitations of NdB4 in zero field using LET. NdB4 crystallises into tetragonal structure where the Nd ions forms layers which map to... -
## Field-induced z=2 quantum criticality of a 1D quantum magnet

During recent years, the study of T=0 quantum phase transitions (QPT), the emergent scaling properties and their profound influence on physical properties at T>0 has...