Dynamically Induced Frustration as a Route to a Quantum Spin Ice State inTb2Ti2O7via Virtual Crystal Field Excitations and Quantum Many-Body Effects

2006/08/31 by Hamid R. Molavian, Michel J. P. Gingras, B. Canals +1 · 12 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Multiferroics and related materials #Nuclear materials and radiation effects #cond-mat.mtrl-sci #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.98.157204

published as Phys. Rev. Lett. 98, 157204 (2007) · 5 pages, 3 figures. Version 2 has a modified introduction. Figure 2b of version 1 (experimental neutron scattering has been removed. A proposal for an experimental test is now included accompanied by a new Figure (Fig. 3)

arxiv created 2006/12/02 · openalex publication_date 2007/04/12 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The Tb₂Ti₂O₇ pyrochlore magnetic material is attracting much attention for its spin liquid state, failing to develop long-range order down to 50 mK despite a Curie-Weiss temperature \ensuremathθ_CW\ensuremath∼\ensuremath-14 K. In this Letter we reinvestigate the theoretical description of this material by considering a quantum model of independent tetrahedra to describe its low-temperature properties. The naturally tuned proximity of this system near a N'eel to spin ice phase boundary allows for a resurgence of quantum fluctuation effects that lead to an important renormalization of its effective low-energy spin Hamiltonian. As a result, Tb₂Ti₂O₇ is argued to be a quantum spin ice. We put forward an experimental test of this proposal using neutron scattering on a single crystal.

Citations

• Pyrochlore photons: TheU(1)spin liquid in aS=12three-dimensional frustrated magnet
• Understanding paramagnetic spin correlations in the spin-liquid pyrochloreTb2Ti2O7
• Single-ion anisotropy in the gadolinium pyrochlores studied by electron paramagnetic resonance

Cited by

• Structural distortion and the spin liquid state inTb2Ti2O7
• Incipient Ferromagnetism inTb2Ge2O7: Application of Chemical Pressure to the Enigmatic Spin-Liquid CompoundTb2Ti2O7
• Quantum Order by Disorder and Accidental Soft Mode inEr2Ti2O7
• A spin-liquid with pinch-line singularities on the pyrochlore lattice
• Crystal field states ofTb3+in the pyrochlore spin liquidTb2Ti2O7from neutron spectroscopy
• Frustrated Quantum Rare-Earth Pyrochlores
• First-Principles Design of the Spinel Iridate Ir2O4 for High-Temperature Quantum Spin Ice
• Two-dimensional spin liquid behaviour in the triangular-honeycomb antiferromagnet TbInO3
• Exchange interactions in two-state systems: rare earth pyrochlores
• Effective spin-12description of transverse-field-induced random fields in dipolar spin glasses with strong single-ion anisotropy
• Quadrupole Order in the Frustrated PyrochloreTb2+xTi2−xO7+y
• Order by virtual crystal field fluctuations in pyrochlore XY antiferromagnets