Field Induced Order and Spin Waves in the Pyrochlore Antiferromagnet Tb2Ti2O7

Abstract

High resolution time-of-flight neutron scattering measurements on Tb2Ti2O7 reveal a rich low temperature phase diagram in the presence of a magnetic field applied along [110]. In zero field at T=0.4 K, terbium titanate is a highly correlated cooperative paramagnet with disordered spins residing on a pyrochlore lattice of corner-sharing tetrahedra. Application of a small field condenses much of the magnetic diffuse scattering, characteristic of the disordered spins, into a new Bragg peak characteristic of a polarized paramagnet. At higher fields, a magnetically ordered phase is induced, which supports spin wave excitations indicative of continuous, rather than Ising-like spin degrees of freedom.

5 pages, 4 figures, submitted to PRL

References in corpus (1)

• Understanding Paramagnetic Spin Correlations in the Spin-Liquid Pyrochlore Tb2Ti2O7

Cited by in corpus (9)

• Dynamically-Induced Frustration as a Route to a Quantum Spin Ice State in Tb2Ti2O7 via Virtual Crystal Field Excitations and Quantum Many-Body Effects
• Structural distortion and the spin liquid state in Tb2Ti2O7
• Structural Fluctuations in the Spin Liquid State of Tb2Ti2O7
• Manifestation of geometric frustration on magnetic and thermodynamic properties of pyrochlores $S{m}_2{X}_2{O}_7$ (X=Ti, Zr)
• Proposal for a [111] Magnetization Plateau in the Spin Liquid State of Tb2Ti2O7
• Field induced spin ice like orders in spin liquid Tb${}_2$Ti${}_2$O${}_7$
• Hidden magnetic frustration by quantum relaxation in anisotropic Nd-langasite
• Magnetothermal study of Dy Stuffed Spin Ice: Dy2(DyxTi2-x)O7-x/2
• Assessment of the RE(OH)3 Ising-like Magnetic Materials as Possible Candidates for the Study of Transverse-Field-Induced Quantum Phase Transitions