Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2002-07-10
Phys. Rev. B 68, 172407 (2003)
Physics
Condensed Matter
Disordered Systems and Neural Networks
revtex4, 4 pages, 1 Color+ 2 BW figures
Scientific paper
10.1103/PhysRevB.68.172407
Recent elastic and inelastic neutron scattering studies of the highly frustrated pyrochlore antiferromagnet Tb2Ti2O7 have shown some very intriguing features that cannot be modeled by the local <111> classical Ising model, naively expected to describe this system at low temperatures. Using the random phase approximation to take into account fluctuations between the ground state doublet and the first excited doublet, we successfully describe the elastic neutron scattering pattern and dispersion relations in Tb2Ti2O7, semi-quantitatively consistent with experimental observations.
Enjalran Matthew
Gingras Michel J. -P.
Kao Ying-Jer
Maestro Adrian Del
Molavian Hamid R.
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