Structural distortion and the spin liquid state inTb2Ti2O7

2007/12/31 by S. H. Curnoe · 7 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Multiferroics and related materials #Physics of Superconductivity and Magnetism #cond-mat.mtrl-sci

paper · pdf · doi:10.1103/physrevb.78.094418

published as Phys. Rev. B 78, 094418 (2008) · 5 pages

arxiv created 2008/08/20 · openalex publication_date 2008/09/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

It is shown that a \stackrelPk=0, A_2u distortion of the terbium tetrahedral network in Tb₂Ti₂O₇ causes the apparent isolation of single tetrahedra as seen in neutron scattering studies. Single tetrahedron collective spin states, rather than individual spins, account for the main features of the spin liquid state, namely, fluctuating local moments and the absence of long range order. Singlet and doublet collective spin ground states are considered. An effective interaction between tetrahedra on the fcc lattice is derived and found to be weak and anisotropic.

Citations

• Spin-Driven Jahn-Teller Distortion in a Pyrochlore System
• Dynamically Induced Frustration as a Route to a Quantum Spin Ice State inTb2Ti2O7via Virtual Crystal Field Excitations and Quantum Many-Body Effects
• Order by Distortion and String Modes in Pyrochlore Antiferromagnets
• Spin-Peierls phases in pyrochlore antiferromagnets

Cited by

• Magnon interactions in the frustrated pyrochlore ferromagnet Yb2Ti2O7
• Spin dynamics in the presence of competing ferromagnetic and antiferromagnetic correlations inYb2Ti2O7
• Quantum Order by Disorder and Accidental Soft Mode inEr2Ti2O7
• Interplay of uniform U(1) quantum spin liquid and magnetic phases in rare-earth pyrochlore magnets: A fermionic parton approach
• Long-range dynamical magnetic order and spin tunneling in the cooperative paramagnetic states of the pyrochlore analogous spinel antiferromagnets CdYb2X4 (X=S or Se)
• Experimental realization of a quantum breathing pyrochlore antiferromagnet
• Exchange interactions in two-state systems: rare earth pyrochlores

Related

• Tb₂Ti₂O₇, a two singlet spin-liquid pyrochlore
• Understanding paramagnetic spin correlations in the spin-liquid pyrochloreTb2Ti2O7
• Field-induced magnetic structures in Tb2Ti2O7 spin liquid under field H || [111]
• On the nature and anisotropy of Q ≠ 0 correlations in Tb₂Ti₂O₇ under the application of magnetic fields
• Low temperature diffuse neutron scattering and magnetisation in single crystal Tb2Ti2O7