Field-induced order and spin waves in the pyrochlore antiferromagnet Tb2Ti2O7

K. C. Rule; J. P.C. Ruff; B. D. Gaulin; S. R. Dunsiger; J. S. Gardner; J. P. Clancy; M. J. Lewis; H. A. Dabkowska; I. Mirebeau; P. Manuel; Y. Qiu; J. R.D. Copley

doi:10.1103/PhysRevLett.96.177201

Field-induced order and spin waves in the pyrochlore antiferromagnet Tb2Ti2O7

K. C. Rule, J. P.C. Ruff, B. D. Gaulin, S. R. Dunsiger, J. S. Gardner, J. P. Clancy, M. J. Lewis, H. A. Dabkowska, I. Mirebeau, P. Manuel, Y. Qiu, J. R.D. Copley

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80 Scopus citations

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=0.4K, Tb2Ti2O7 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.

Original language	English
Article number	177201
Journal	Physical Review Letters
Volume	96
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.96.177201
State	Published - 2006
Externally published	Yes

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title = "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=0.4K, Tb2Ti2O7 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.",

author = "Rule, \{K. C.\} and Ruff, \{J. P.C.\} and Gaulin, \{B. D.\} and Dunsiger, \{S. R.\} and Gardner, \{J. S.\} and Clancy, \{J. P.\} and Lewis, \{M. J.\} and Dabkowska, \{H. A.\} and I. Mirebeau and P. Manuel and Y. Qiu and Copley, \{J. R.D.\}",

year = "2006",

doi = "10.1103/PhysRevLett.96.177201",

language = "English",

volume = "96",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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TY - JOUR

T1 - Field-induced order and spin waves in the pyrochlore antiferromagnet Tb2Ti2O7

AU - Rule, K. C.

AU - Ruff, J. P.C.

AU - Gaulin, B. D.

AU - Dunsiger, S. R.

AU - Gardner, J. S.

AU - Clancy, J. P.

AU - Lewis, M. J.

AU - Dabkowska, H. A.

AU - Mirebeau, I.

AU - Manuel, P.

AU - Qiu, Y.

AU - Copley, J. R.D.

PY - 2006

Y1 - 2006

N2 - 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=0.4K, Tb2Ti2O7 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.

AB - 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=0.4K, Tb2Ti2O7 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.

UR - https://www.scopus.com/pages/publications/33646384423

U2 - 10.1103/PhysRevLett.96.177201

DO - 10.1103/PhysRevLett.96.177201

M3 - Article

AN - SCOPUS:33646384423

SN - 0031-9007

VL - 96

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 177201

ER -

Field-induced order and spin waves in the pyrochlore antiferromagnet Tb2Ti2O7

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