Unusual field dependence of spin fluctuations on different timescales in Tb 2Ti 2O 7

P. J. Baker; M. J. Matthews; S. R. Giblin; P. Schiffer; C. Baines; D. Prabhakaran

doi:10.1103/PhysRevB.86.094424

Unusual field dependence of spin fluctuations on different timescales in Tb ₂Ti ₂O ₇

P. J. Baker, M. J. Matthews, S. R. Giblin, P. Schiffer, C. Baines, D. Prabhakaran

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15 Scopus citations

Abstract

We have investigated the spin dynamics of Tb ₂Ti ₂O ₇ as a function of magnetic field applied along the [111] axis using ac susceptibilty and muon-spin relaxation measurements. We find a significant increase in the imaginary part of the magnetic susceptibility at low fields at our lowest investigated temperature and an increased muon-spin relaxation rate in the same field range persisting to higher temperature. Comparing the data from the two techniques we identify three field regions where the dynamic properties of Tb ₂Ti ₂O ₇ appear to be evolving in different ways with crossovers between the regions at B ₁=15 and B ₂∼60 mT.

Original language	English (US)
Article number	094424
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.86.094424
State	Published - Sep 19 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.86.094424

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title = "Unusual field dependence of spin fluctuations on different timescales in Tb 2Ti 2O 7 ",

abstract = "We have investigated the spin dynamics of Tb 2Ti 2O 7 as a function of magnetic field applied along the [111] axis using ac susceptibilty and muon-spin relaxation measurements. We find a significant increase in the imaginary part of the magnetic susceptibility at low fields at our lowest investigated temperature and an increased muon-spin relaxation rate in the same field range persisting to higher temperature. Comparing the data from the two techniques we identify three field regions where the dynamic properties of Tb 2Ti 2O 7 appear to be evolving in different ways with crossovers between the regions at B 1=15 and B 2∼60 mT.",

author = "Baker, {P. J.} and Matthews, {M. J.} and Giblin, {S. R.} and P. Schiffer and C. Baines and D. Prabhakaran",

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doi = "10.1103/PhysRevB.86.094424",

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AU - Baker, P. J.

AU - Matthews, M. J.

AU - Giblin, S. R.

AU - Schiffer, P.

AU - Baines, C.

AU - Prabhakaran, D.

PY - 2012/9/19

Y1 - 2012/9/19

N2 - We have investigated the spin dynamics of Tb 2Ti 2O 7 as a function of magnetic field applied along the [111] axis using ac susceptibilty and muon-spin relaxation measurements. We find a significant increase in the imaginary part of the magnetic susceptibility at low fields at our lowest investigated temperature and an increased muon-spin relaxation rate in the same field range persisting to higher temperature. Comparing the data from the two techniques we identify three field regions where the dynamic properties of Tb 2Ti 2O 7 appear to be evolving in different ways with crossovers between the regions at B 1=15 and B 2∼60 mT.

AB - We have investigated the spin dynamics of Tb 2Ti 2O 7 as a function of magnetic field applied along the [111] axis using ac susceptibilty and muon-spin relaxation measurements. We find a significant increase in the imaginary part of the magnetic susceptibility at low fields at our lowest investigated temperature and an increased muon-spin relaxation rate in the same field range persisting to higher temperature. Comparing the data from the two techniques we identify three field regions where the dynamic properties of Tb 2Ti 2O 7 appear to be evolving in different ways with crossovers between the regions at B 1=15 and B 2∼60 mT.

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Unusual field dependence of spin fluctuations on different timescales in Tb ₂Ti ₂O ₇

Abstract

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