Spin dynamics in Ho2Ru2O7

J. S. Gardner; A. L. Cornelius; L. J. Chang; M. Prager; Th Brückel; G. Ehlers

doi:10.1088/0953-8984/17/44/002

Spin dynamics in Ho₂Ru₂O₇

J. S. Gardner
, A. L. Cornelius
, L. J. Chang
, M. Prager
, Th Brückel
, G. Ehlers

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

18 Scopus citations

Abstract

The spin relaxation processes within the pyrochlore Ho₂Ru ₂O₇ have been investigated by neutron scattering and bulk property techniques. A single-ion process, that is thermally activated, dominates the spin-spin relaxation spectrum above 2 K. Assuming Arrhenius behaviour, we found an activation energy Δ ≤ (329 ± 6) K and characteristic relaxation time τ₀ ≤ (5.2 ± 0.3) × 10^-12s in the paramagnetic state, akin to those found in the spin ice, Ho₂Ti₂O₇. Atlow temperature (T<95K) the activation energy lowers and below 20K the entropy and ac susceptibility are similar to that observed in other spin ice compounds within a 10kOe field.

Original language	English
Pages (from-to)	7089-7095
Number of pages	7
Journal	Journal of Physics Condensed Matter
Volume	17
Issue number	44
DOIs	https://doi.org/10.1088/0953-8984/17/44/002
State	Published - Nov 9 2005
Externally published	Yes

Access to Document

10.1088/0953-8984/17/44/002

Cite this

@article{daa0610bbd6c4778982940bbbedb20d9,

title = "Spin dynamics in Ho2Ru2O7",

abstract = "The spin relaxation processes within the pyrochlore Ho2Ru 2O7 have been investigated by neutron scattering and bulk property techniques. A single-ion process, that is thermally activated, dominates the spin-spin relaxation spectrum above 2 K. Assuming Arrhenius behaviour, we found an activation energy Δ ≤ (329 ± 6) K and characteristic relaxation time τ0 ≤ (5.2 ± 0.3) × 10-12s in the paramagnetic state, akin to those found in the spin ice, Ho2Ti2O7. Atlow temperature (T<95K) the activation energy lowers and below 20K the entropy and ac susceptibility are similar to that observed in other spin ice compounds within a 10kOe field.",

author = "Gardner, \{J. S.\} and Cornelius, \{A. L.\} and Chang, \{L. J.\} and M. Prager and Th Br{\"u}ckel and G. Ehlers",

year = "2005",

month = nov,

day = "9",

doi = "10.1088/0953-8984/17/44/002",

language = "English",

volume = "17",

pages = "7089--7095",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing",

number = "44",

}

TY - JOUR

T1 - Spin dynamics in Ho2Ru2O7

AU - Gardner, J. S.

AU - Cornelius, A. L.

AU - Chang, L. J.

AU - Prager, M.

AU - Brückel, Th

AU - Ehlers, G.

PY - 2005/11/9

Y1 - 2005/11/9

N2 - The spin relaxation processes within the pyrochlore Ho2Ru 2O7 have been investigated by neutron scattering and bulk property techniques. A single-ion process, that is thermally activated, dominates the spin-spin relaxation spectrum above 2 K. Assuming Arrhenius behaviour, we found an activation energy Δ ≤ (329 ± 6) K and characteristic relaxation time τ0 ≤ (5.2 ± 0.3) × 10-12s in the paramagnetic state, akin to those found in the spin ice, Ho2Ti2O7. Atlow temperature (T<95K) the activation energy lowers and below 20K the entropy and ac susceptibility are similar to that observed in other spin ice compounds within a 10kOe field.

AB - The spin relaxation processes within the pyrochlore Ho2Ru 2O7 have been investigated by neutron scattering and bulk property techniques. A single-ion process, that is thermally activated, dominates the spin-spin relaxation spectrum above 2 K. Assuming Arrhenius behaviour, we found an activation energy Δ ≤ (329 ± 6) K and characteristic relaxation time τ0 ≤ (5.2 ± 0.3) × 10-12s in the paramagnetic state, akin to those found in the spin ice, Ho2Ti2O7. Atlow temperature (T<95K) the activation energy lowers and below 20K the entropy and ac susceptibility are similar to that observed in other spin ice compounds within a 10kOe field.

UR - https://www.scopus.com/pages/publications/27144510115

U2 - 10.1088/0953-8984/17/44/002

DO - 10.1088/0953-8984/17/44/002

M3 - Article

AN - SCOPUS:27144510115

SN - 0953-8984

VL - 17

SP - 7089

EP - 7095

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 44

ER -

Spin dynamics in Ho₂Ru₂O₇

Abstract

Access to Document

Other files and links

Fingerprint

Cite this