Ultrafast dynamics of the itinerant antiferromagnet UNiGa5

Elbert E.M. Chia; H. J. Lee; Namjung Hur; E. D. Bauer; T. Durakiewiez; R. D. Averitt; J. L. Sarrao; A. J. Taylor

doi:10.1557/PROC-0893-JJ05-08

Ultrafast dynamics of the itinerant antiferromagnet UNiGa₅

Elbert E.M. Chia
, H. J. Lee
, Namjung Hur
, E. D. Bauer
, T. Durakiewiez
, R. D. Averitt
, J. L. Sarrao
, A. J. Taylor

Los Alamos National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Time-resolved photoinduced reflectivity data were measured for the itinerant antiferromagnet UNiGa₅ (T_N ≈ 85 K) from room temperature down to 10 K. The relaxation time τ increases sharply near T_N, which we attribute to the opening of a spin gap. In addition, at the lowest temperatures τ increases with a T′ dependence, which is similar to that shown by the heavy fermion YbAgCu₄, but with no blocking of electron-phonon scattering within the DOS peak. The transient amplitude increase at TN with a temperature dependence that is consistent with the appearance of a spin gap.

Original language	English
Title of host publication	Materials Research Society Symposium Proceedings
Pages	149-154
Number of pages	6
DOIs	https://doi.org/10.1557/PROC-0893-JJ05-08
State	Published - May 16 2006
Event	2005 Materials Research Society Fall Meeting - Duration: May 16 2006 → …

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	893
ISSN (Print)	0272-9172

Conference

Conference	2005 Materials Research Society Fall Meeting
Period	05/16/06 → …

Access to Document

10.1557/PROC-0893-JJ05-08

Cite this

@inproceedings{db0e6ba51da24ce59d4fe74ae466efdd,

title = "Ultrafast dynamics of the itinerant antiferromagnet UNiGa5",

abstract = "Time-resolved photoinduced reflectivity data were measured for the itinerant antiferromagnet UNiGa5 (TN ≈ 85 K) from room temperature down to 10 K. The relaxation time τ increases sharply near TN, which we attribute to the opening of a spin gap. In addition, at the lowest temperatures τ increases with a T′ dependence, which is similar to that shown by the heavy fermion YbAgCu4, but with no blocking of electron-phonon scattering within the DOS peak. The transient amplitude increase at TN with a temperature dependence that is consistent with the appearance of a spin gap.",

author = "Chia, \{Elbert E.M.\} and Lee, \{H. J.\} and Namjung Hur and Bauer, \{E. D.\} and T. Durakiewiez and Averitt, \{R. D.\} and Sarrao, \{J. L.\} and Taylor, \{A. J.\}",

year = "2006",

month = may,

day = "16",

doi = "10.1557/PROC-0893-JJ05-08",

language = "English",

isbn = "1558998470",

series = "Materials Research Society Symposium Proceedings",

pages = "149--154",

booktitle = "Materials Research Society Symposium Proceedings",

note = "2005 Materials Research Society Fall Meeting ; Conference date: 16-05-2006",

}

Chia, EEM, Lee, HJ, Hur, N, Bauer, ED, Durakiewiez, T, Averitt, RD, Sarrao, JL & Taylor, AJ 2006, Ultrafast dynamics of the itinerant antiferromagnet UNiGa₅. in Materials Research Society Symposium Proceedings. Materials Research Society Symposium Proceedings, vol. 893, pp. 149-154, 2005 Materials Research Society Fall Meeting, 05/16/06. https://doi.org/10.1557/PROC-0893-JJ05-08

TY - GEN

T1 - Ultrafast dynamics of the itinerant antiferromagnet UNiGa5

AU - Chia, Elbert E.M.

AU - Lee, H. J.

AU - Hur, Namjung

AU - Bauer, E. D.

AU - Durakiewiez, T.

AU - Averitt, R. D.

AU - Sarrao, J. L.

AU - Taylor, A. J.

PY - 2006/5/16

Y1 - 2006/5/16

N2 - Time-resolved photoinduced reflectivity data were measured for the itinerant antiferromagnet UNiGa5 (TN ≈ 85 K) from room temperature down to 10 K. The relaxation time τ increases sharply near TN, which we attribute to the opening of a spin gap. In addition, at the lowest temperatures τ increases with a T′ dependence, which is similar to that shown by the heavy fermion YbAgCu4, but with no blocking of electron-phonon scattering within the DOS peak. The transient amplitude increase at TN with a temperature dependence that is consistent with the appearance of a spin gap.

AB - Time-resolved photoinduced reflectivity data were measured for the itinerant antiferromagnet UNiGa5 (TN ≈ 85 K) from room temperature down to 10 K. The relaxation time τ increases sharply near TN, which we attribute to the opening of a spin gap. In addition, at the lowest temperatures τ increases with a T′ dependence, which is similar to that shown by the heavy fermion YbAgCu4, but with no blocking of electron-phonon scattering within the DOS peak. The transient amplitude increase at TN with a temperature dependence that is consistent with the appearance of a spin gap.

UR - https://www.scopus.com/pages/publications/33646461271

U2 - 10.1557/PROC-0893-JJ05-08

DO - 10.1557/PROC-0893-JJ05-08

M3 - Conference contribution

SN - 1558998470

SN - 9781558998476

T3 - Materials Research Society Symposium Proceedings

SP - 149

EP - 154

BT - Materials Research Society Symposium Proceedings

T2 - 2005 Materials Research Society Fall Meeting

Y2 - 16 May 2006

ER -