Dynamic Properties of a Diluted Pyrochlore Cooperative Paramagnet (Tb pY1-p)2Ti2O7

A. Keren; J. S. Gardner; G. Ehlers; A. Fukaya; E. Segal; Y. J. Uemura

doi:10.1103/PhysRevLett.92.107204

Dynamic Properties of a Diluted Pyrochlore Cooperative Paramagnet (Tb _pY_1-p)₂Ti₂O₇

A. Keren, J. S. Gardner, G. Ehlers, A. Fukaya, E. Segal, Y. J. Uemura

Materials Science and Technology Div

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

The spin dynamics of the geometrically frustrated pyrochlore cooperative paramagnet (Tb_pY_1-p)₂Ti₂O ₇ was investigated using muon spin relaxation and neutron spin echo, as a function of magnetic coverage p. It was shown that the nonmagnetic Y ion replaces the magnetic Tb ion on the corner sharing tetrahedra which make up the pyrochlore lattice. It was observed that the correlation of spins in this magnet has a power law decay with a very small power x. It was seen that this power gets even smaller when the magnetic coverage decreases, resulting in slowing down the spin fluctuations. It was found that the low temperature spectral density has a 1/f behavior.

Original language	English
Article number	107204
Pages (from-to)	107204-1-107204-4
Journal	Physical Review Letters
Volume	92
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.92.107204
State	Published - Mar 12 2004

Funding

We would like to thank the ISIS facilities for their kind hospitality and continuing support of this project. This work was funded by the Israel?>—?>U.S. Binational Science Foundation, the EU-TMR program, and the NATO Collaborative Linkage Grant, No. PST.CLG.978705. The work of J. S. G. at Brookhaven is supported by Division of Material Sciences, U.S. Department of Energy under Contract No. DE-AC02-98CH10886.

Access to Document

10.1103/PhysRevLett.92.107204

Cite this

@article{7d83180a118f49a6a2b1ec33f6f65d42,

title = "Dynamic Properties of a Diluted Pyrochlore Cooperative Paramagnet (Tb pY1-p)2Ti2O7",

abstract = "The spin dynamics of the geometrically frustrated pyrochlore cooperative paramagnet (TbpY1-p)2Ti2O 7 was investigated using muon spin relaxation and neutron spin echo, as a function of magnetic coverage p. It was shown that the nonmagnetic Y ion replaces the magnetic Tb ion on the corner sharing tetrahedra which make up the pyrochlore lattice. It was observed that the correlation of spins in this magnet has a power law decay with a very small power x. It was seen that this power gets even smaller when the magnetic coverage decreases, resulting in slowing down the spin fluctuations. It was found that the low temperature spectral density has a 1/f behavior.",

author = "A. Keren and Gardner, {J. S.} and G. Ehlers and A. Fukaya and E. Segal and Uemura, {Y. J.}",

year = "2004",

month = mar,

day = "12",

doi = "10.1103/PhysRevLett.92.107204",

language = "English",

volume = "92",

pages = "107204--1--107204--4",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "10",

}

TY - JOUR

T1 - Dynamic Properties of a Diluted Pyrochlore Cooperative Paramagnet (Tb pY1-p)2Ti2O7

AU - Keren, A.

AU - Gardner, J. S.

AU - Ehlers, G.

AU - Fukaya, A.

AU - Segal, E.

AU - Uemura, Y. J.

PY - 2004/3/12

Y1 - 2004/3/12

N2 - The spin dynamics of the geometrically frustrated pyrochlore cooperative paramagnet (TbpY1-p)2Ti2O 7 was investigated using muon spin relaxation and neutron spin echo, as a function of magnetic coverage p. It was shown that the nonmagnetic Y ion replaces the magnetic Tb ion on the corner sharing tetrahedra which make up the pyrochlore lattice. It was observed that the correlation of spins in this magnet has a power law decay with a very small power x. It was seen that this power gets even smaller when the magnetic coverage decreases, resulting in slowing down the spin fluctuations. It was found that the low temperature spectral density has a 1/f behavior.

AB - The spin dynamics of the geometrically frustrated pyrochlore cooperative paramagnet (TbpY1-p)2Ti2O 7 was investigated using muon spin relaxation and neutron spin echo, as a function of magnetic coverage p. It was shown that the nonmagnetic Y ion replaces the magnetic Tb ion on the corner sharing tetrahedra which make up the pyrochlore lattice. It was observed that the correlation of spins in this magnet has a power law decay with a very small power x. It was seen that this power gets even smaller when the magnetic coverage decreases, resulting in slowing down the spin fluctuations. It was found that the low temperature spectral density has a 1/f behavior.

UR - http://www.scopus.com/inward/record.url?scp=2142754556&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.92.107204

DO - 10.1103/PhysRevLett.92.107204

M3 - Article

AN - SCOPUS:2142754556

SN - 0031-9007

VL - 92

SP - 107204-1-107204-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 10

M1 - 107204

ER -

Dynamic Properties of a Diluted Pyrochlore Cooperative Paramagnet (Tb _pY_1-p)₂Ti₂O₇

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this