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Universal Quantum-Critical Dynamics of a Two Dimensional Antiferromagnet
We have recently discovered a pressure-induced quantum phase transition (QPT) at 4.3 kbar in the gapped quantum magnet piperazinium hexachlorodicuprate (PHCC) by means of... -
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 apply for a... -
Soft Modes in the Ferroelectric Semiconductor SbSI
Antimony sulfo-iodide (SbSI) exhibits strongly-coupled photoconductive, semiconducting, and ferroelectric properties. Until the discovery of the lead-oxide ferroelectric relaxor... -
Magnetic Excitations of a Model Quantum Spin Ladder
(C5H12N)2CuBr4 is the best realisation found to date of an antiferromagnetic quantum spin ladder in the strong coupling limit. This system displays an extremely rich phase... -
Magnetic excitations in the new superconductor A2Cr3As3 (A=K, Cs and Rb)
The recently discovered quasi-one-dimensional (Q1D) superconductor A2Cr3As3 (A=K, Rb, and Cs with TC ≈ 6.1 K, 4.8 K, and 2.2 K, respectively) has intrigued intensive... -
E/T scaling and quantum critical fluctuations in Sr3Ru2O7
Many novel electronic ground states form in close proximity to quantum critical points (QCPs), that is, the point where a continuous phase transition occurs at zero temperature.... -
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 antiferromagnets. A canonical model system is the spin-1/2 triangular... -
Magnetic excitations and Orbital configuration in the vanadium spinel MgV2O4
The Vanadium spinels provide ideal systems to study the interactions between spin, lattice and orbital degrees of freedom. The magnetic V3+ ions are antiferromagnetically... -
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... -
Continuation of "Magnetic excitations in the quantum spin ice Yb2Ti2O7"
We have recently carried out an inelastic neutron scattering experiment at LET in order to investigate the excitations in the quantum spin ice Yb2Ti2O7. The single crystal...
