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Spin waves and electronic interactions in La2CuO4.
TLDR
The observed dispersion relation shows evidence for substantial interactions beyond the nearest-neighbor Heisenberg term which can be understood in terms of a cyclic or ring exchange due to the strong hybridization path around the Cu4O4 square plaquettes. Expand
Quantum Phase Transition of a Magnet in a Spin Bath
TLDR
It is found that interactions with the nuclear spin bath controlled the length scale over which the excitations could be entangled, which places a limit on the ability to observe intrinsic electronic quantum criticality. Expand
Potential for spin-based information processing in a thin-film molecular semiconductor
TLDR
T2 is more than two orders of magnitude greater than the duration of the spin manipulation pulses, which suggests that copper phthalocyanine holds promise for quantum information processing, and the long T1 indicates possibilities for medium-term storage of classical bits in all-organic devices on plastic substrates. Expand
Onset of antiferromagnetism in heavy-fermion metals
TLDR
Evidence is found for an atomically local contribution to the magnetic correlations which develops at the critical gold concentration, corresponding to a magnetic ordering temperature of zero, which implies that a Fermi-liquid-destroying spin-localizing transition, unanticipated from the spin density wave description, coincides with the antiferromagnetic quantum critical point. Expand
Entangled quantum state of magnetic dipoles
TLDR
This finding is significant because it shows that entanglement, rather than energy-level redistribution, can underlie the magnetic behaviour of a simple insulating quantum spin system. Expand
Antiferromagnetic order induced by an applied magnetic field in a high-temperature superconductor
TLDR
It is reported that for one high-Tc superconductor, the applied field that imposes the vortex lattice also induces ‘striped’ antiferromagnetic order, observed in the measurements. Expand
A ferromagnet in a continuously tunable random field
TLDR
The discovery that a simply measured magnetic response is singular above the Curie temperature of a model, disordered magnet, and that the associated singularity grows to an anomalous divergence at TC is reported. Expand
Nanomechanical detection of antibiotic-mucopeptide binding in a model for superbug drug resistance.
TLDR
The label-free detection of vancomycin binding to bacterial cell wall precursor analogues (mucopeptides) on cantilever arrays is reported, with 10 nM sensitivity and at clinically relevant concentrations in blood serum, placing BioMEMS devices in a new class of percolative systems. Expand
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