Cooperative paramagnetism in the geometrically frustrated pyrochlore antiferromagnet Tb2Ti2O7

J. S. Gardner; S. R. Dunsiger; B. D. Gaulin; M. J.P. Gingras; J. E. Greedan; R. F. Kiefl; M. D. Lumsden; W. A. Mac Farlane; N. P. Raju; J. E. Sonier; I. Swainson; Z. Tun

doi:10.1103/PhysRevLett.82.1012

Cooperative paramagnetism in the geometrically frustrated pyrochlore antiferromagnet Tb₂Ti₂O₇

J. S. Gardner, S. R. Dunsiger, B. D. Gaulin, M. J.P. Gingras, J. E. Greedan, R. F. Kiefl, M. D. Lumsden, W. A. Mac Farlane, N. P. Raju, J. E. Sonier, I. Swainson, Z. Tun

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Abstract

Neutron scattering, muon spin relaxation, and dc susceptibility studies have been carried out on polycrystalline Tb₂Ti₂O₇a pyrochlore antiferromagnet in which the Tb³⁺ moments reside on a network of corner-sharing tetrahedra. Unlike other geometrically frustrated systems, Tb₂Ti₂O₇ remains paramagnetic down to ∼0.07K, rather than ordering into a conventional Néel or spin-glass-like state, despite the fact that short-range antiferromagnetic correlations (AFC) develop at ∼50K. At the first AFC wave vector, its low-lying, relatively flat magnetic excitation spectrum softens partially below 30 K.

Original language	English
Pages (from-to)	1012-1015
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.82.1012
State	Published - 1999
Externally published	Yes

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Gardner, J. S., Dunsiger, S. R., Gaulin, B. D., Gingras, M. J. P., Greedan, J. E., Kiefl, R. F., Lumsden, M. D., Mac Farlane, W. A., Raju, N. P., Sonier, J. E., Swainson, I., & Tun, Z. (1999). Cooperative paramagnetism in the geometrically frustrated pyrochlore antiferromagnet Tb₂Ti₂O₇. Physical Review Letters, 82(5), 1012-1015. https://doi.org/10.1103/PhysRevLett.82.1012

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abstract = "Neutron scattering, muon spin relaxation, and dc susceptibility studies have been carried out on polycrystalline Tb2Ti2O7a pyrochlore antiferromagnet in which the Tb3+ moments reside on a network of corner-sharing tetrahedra. Unlike other geometrically frustrated systems, Tb2Ti2O7 remains paramagnetic down to ∼0.07K, rather than ordering into a conventional N{\'e}el or spin-glass-like state, despite the fact that short-range antiferromagnetic correlations (AFC) develop at ∼50K. At the first AFC wave vector, its low-lying, relatively flat magnetic excitation spectrum softens partially below 30 K.",

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doi = "10.1103/PhysRevLett.82.1012",

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volume = "82",

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AU - Gardner, J. S.

AU - Dunsiger, S. R.

AU - Gaulin, B. D.

AU - Gingras, M. J.P.

AU - Greedan, J. E.

AU - Kiefl, R. F.

AU - Lumsden, M. D.

AU - Mac Farlane, W. A.

AU - Raju, N. P.

AU - Sonier, J. E.

AU - Swainson, I.

AU - Tun, Z.

PY - 1999

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AB - Neutron scattering, muon spin relaxation, and dc susceptibility studies have been carried out on polycrystalline Tb2Ti2O7a pyrochlore antiferromagnet in which the Tb3+ moments reside on a network of corner-sharing tetrahedra. Unlike other geometrically frustrated systems, Tb2Ti2O7 remains paramagnetic down to ∼0.07K, rather than ordering into a conventional Néel or spin-glass-like state, despite the fact that short-range antiferromagnetic correlations (AFC) develop at ∼50K. At the first AFC wave vector, its low-lying, relatively flat magnetic excitation spectrum softens partially below 30 K.

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Cooperative paramagnetism in the geometrically frustrated pyrochlore antiferromagnet Tb₂Ti₂O₇

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