Quantum spin fluctuations in the spin liquid state of Tb2Ti2O7

Details Quantum spin fluctuations in the spin liquid state of Tb2Ti2O7 Quantum spin fluctuations in the spin liquid state of Tb2Ti2O7

2011-06-18

arxiv.org/abs/1106.3649v3

J. Phys.: Condens. Matter 24, 052201 (2012)

Physics

Condensed Matter

Disordered Systems and Neural Networks

4 pages, 4 figures

Scientific paper

10.1088/0953-8984/24/5/052201

Neutron scattering experiments on a polycrystalline sample of the frustrated pyrochlore magnet Tb2Ti2O7, which does not show any magnetic order down to 50 mK, have revealed that it shows condensation behavior below 0.4 K from a thermally fluctuating paramagnetic state to a spin-liquid ground-state with quantum spin fluctuations. Energy spectra change from quasielastic scattering to a continuum with a double-peak structure at energies of 0 and 0.8 K in the spin-liquid state. Specific heat shows an anomaly at the crossover temperature.

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