Low-temperature spin dynamics in the kagome system Pr3 Ga 5 SiO14

L. L. Lumata; T. Besara; P. L. Kuhns; A. P. Reyes; H. D. Zhou; C. R. Wiebe; L. Balicas; Y. J. Jo; J. S. Brooks; Y. Takano; M. J. Case; Y. Qiu; J. R.D. Copley; J. S. Gardner; K. Y. Choi; N. S. Dalal; M. J.R. Hoch

doi:10.1103/PhysRevB.81.224416

Low-temperature spin dynamics in the kagome system Pr₃ Ga ₅ SiO₁₄

L. L. Lumata, T. Besara, P. L. Kuhns, A. P. Reyes, H. D. Zhou, C. R. Wiebe, L. Balicas, Y. J. Jo, J. S. Brooks, Y. Takano, M. J. Case, Y. Qiu, J. R.D. Copley, J. S. Gardner, K. Y. Choi, N. S. Dalal, M. J.R. Hoch

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

20 Scopus citations

Abstract

Neutron-scattering measurements on a single crystal of the distorted kagome system Pr₃ Ga₅ SiO₁₄ show that in zero magnetic field the system does not order magnetically at temperatures as low as 35 mK. The specific heat is found to exhibit T2 behavior below 4 K. These results are indicative of a low-temperature two-dimensional dynamically disordered state in this geometrically frustrated antiferromagnet. Complementary in-field NMR experiments reveal that the spins remain dynamic down to millikelvin temperatures exhibiting spin-correlation times that are field dependent. The results are consistent with a field-dependent gap in the low-energy excitation spectrum. Diffuse neutron-scattering observations suggest that the application of a magnetic field induces dynamical short-range ordering.

Original language	English
Article number	224416
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.81.224416
State	Published - 9 Jun 2010

Access to Document

10.1103/PhysRevB.81.224416

Cite this

Lumata, L. L., Besara, T., Kuhns, P. L., Reyes, A. P., Zhou, H. D., Wiebe, C. R., Balicas, L., Jo, Y. J., Brooks, J. S., Takano, Y., Case, M. J., Qiu, Y., Copley, J. R. D., Gardner, J. S., Choi, K. Y., Dalal, N. S., & Hoch, M. J. R. (2010). Low-temperature spin dynamics in the kagome system Pr₃ Ga ₅ SiO₁₄. Physical Review B - Condensed Matter and Materials Physics, 81(22), Article 224416. https://doi.org/10.1103/PhysRevB.81.224416

@article{d5ddfaf0cdd94091aa3b05234726f938,

title = "Low-temperature spin dynamics in the kagome system Pr3 Ga 5 SiO14",

abstract = "Neutron-scattering measurements on a single crystal of the distorted kagome system Pr3 Ga5 SiO14 show that in zero magnetic field the system does not order magnetically at temperatures as low as 35 mK. The specific heat is found to exhibit T2 behavior below 4 K. These results are indicative of a low-temperature two-dimensional dynamically disordered state in this geometrically frustrated antiferromagnet. Complementary in-field NMR experiments reveal that the spins remain dynamic down to millikelvin temperatures exhibiting spin-correlation times that are field dependent. The results are consistent with a field-dependent gap in the low-energy excitation spectrum. Diffuse neutron-scattering observations suggest that the application of a magnetic field induces dynamical short-range ordering.",

author = "Lumata, {L. L.} and T. Besara and Kuhns, {P. L.} and Reyes, {A. P.} and Zhou, {H. D.} and Wiebe, {C. R.} and L. Balicas and Jo, {Y. J.} and Brooks, {J. S.} and Y. Takano and Case, {M. J.} and Y. Qiu and Copley, {J. R.D.} and Gardner, {J. S.} and Choi, {K. Y.} and Dalal, {N. S.} and Hoch, {M. J.R.}",

year = "2010",

month = jun,

day = "9",

doi = "10.1103/PhysRevB.81.224416",

language = "English",

volume = "81",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "22",

}

Lumata, LL, Besara, T, Kuhns, PL, Reyes, AP, Zhou, HD, Wiebe, CR, Balicas, L, Jo, YJ, Brooks, JS, Takano, Y, Case, MJ, Qiu, Y, Copley, JRD, Gardner, JS, Choi, KY, Dalal, NS & Hoch, MJR 2010, 'Low-temperature spin dynamics in the kagome system Pr₃ Ga ₅ SiO₁₄', Physical Review B - Condensed Matter and Materials Physics, vol. 81, no. 22, 224416. https://doi.org/10.1103/PhysRevB.81.224416

TY - JOUR

T1 - Low-temperature spin dynamics in the kagome system Pr3 Ga 5 SiO14

AU - Lumata, L. L.

AU - Besara, T.

AU - Kuhns, P. L.

AU - Reyes, A. P.

AU - Zhou, H. D.

AU - Wiebe, C. R.

AU - Balicas, L.

AU - Jo, Y. J.

AU - Brooks, J. S.

AU - Takano, Y.

AU - Case, M. J.

AU - Qiu, Y.

AU - Copley, J. R.D.

AU - Gardner, J. S.

AU - Choi, K. Y.

AU - Dalal, N. S.

AU - Hoch, M. J.R.

PY - 2010/6/9

Y1 - 2010/6/9

N2 - Neutron-scattering measurements on a single crystal of the distorted kagome system Pr3 Ga5 SiO14 show that in zero magnetic field the system does not order magnetically at temperatures as low as 35 mK. The specific heat is found to exhibit T2 behavior below 4 K. These results are indicative of a low-temperature two-dimensional dynamically disordered state in this geometrically frustrated antiferromagnet. Complementary in-field NMR experiments reveal that the spins remain dynamic down to millikelvin temperatures exhibiting spin-correlation times that are field dependent. The results are consistent with a field-dependent gap in the low-energy excitation spectrum. Diffuse neutron-scattering observations suggest that the application of a magnetic field induces dynamical short-range ordering.

AB - Neutron-scattering measurements on a single crystal of the distorted kagome system Pr3 Ga5 SiO14 show that in zero magnetic field the system does not order magnetically at temperatures as low as 35 mK. The specific heat is found to exhibit T2 behavior below 4 K. These results are indicative of a low-temperature two-dimensional dynamically disordered state in this geometrically frustrated antiferromagnet. Complementary in-field NMR experiments reveal that the spins remain dynamic down to millikelvin temperatures exhibiting spin-correlation times that are field dependent. The results are consistent with a field-dependent gap in the low-energy excitation spectrum. Diffuse neutron-scattering observations suggest that the application of a magnetic field induces dynamical short-range ordering.

UR - http://www.scopus.com/inward/record.url?scp=77956300224&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.81.224416

DO - 10.1103/PhysRevB.81.224416

M3 - Article

AN - SCOPUS:77956300224

SN - 1098-0121

VL - 81

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 22

M1 - 224416

ER -

Low-temperature spin dynamics in the kagome system Pr₃ Ga ₅ SiO₁₄

Abstract

Access to Document

Other files and links

Fingerprint

Cite this