Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr1-x Cax)3Ru2O7

Zhe Qu; Leonard Spinu; Huiqiu Yuan; Vladimir Dobrosavljević; Wei Bao; Jeffrey W. Lynn; M. Nicklas; Jin Peng; Tijiang Liu; David Fobes; Etienne Flesch; Z. Q. Mao

doi:10.1103/PhysRevB.78.180407

Author(s)

Zhe Qu
Leonard Spinu
Huiqiu Yuan
Vladimir Dobrosavljević
Jeffrey W. Lynn
M. Nicklas
Jin Peng
Tijiang Liu
David Fobes
Etienne Flesch
Z. Q. Mao

Detail(s)

Original language	English
Article number	180407(R)
Journal / Publication	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	18
Online published	14 Nov 2008
Publication status	Published - Nov 2008
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1103/PhysRevB.78.180407 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-57349156191&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(b2832317-7242-41af-9460-38b499c2d185).html

Abstract

We report an unusual nearly ferromagnetic heavy-mass state with a surprisingly large Wilson ratio R_w (e.g., R_w ∼ 700 for x=0.2) in double layered ruthenates (Sr_1-xCa_x)₃Ru₂O₇ with 0.08<x<0.4. This state does not evolve into a long-range ferromagnetically ordered state despite considerably strong ferromagnetic correlations, but it freezes into a cluster-spin glass at low temperatures. In addition, evidence of non-Fermi-liquid behavior is observed as the spin-freezing temperature of the cluster-spin glass approaches zero near x≈0.1. We discuss the origin of this unique magnetic state from the Fermi-surface information probed by Hall-effect measurements.

Citation Format(s)

[ RIS ] [ BibTeX ]

Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr_1-xCa_x)₃Ru₂O₇. / Qu, Zhe; Spinu, Leonard; Yuan, Huiqiu et al.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 18, 180407(R), 11.2008.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review

Qu, Z, Spinu, L, Yuan, H, Dobrosavljević, V, Bao, W, Lynn, JW, Nicklas, M, Peng, J, Liu, T, Fobes, D, Flesch, E & Mao, ZQ 2008, 'Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr_1-xCa_x)₃Ru₂O₇', Physical Review B - Condensed Matter and Materials Physics, vol. 78, no. 18, 180407(R). https://doi.org/10.1103/PhysRevB.78.180407

Qu, Z., Spinu, L., Yuan, H., Dobrosavljević, V., Bao, W., Lynn, J. W., Nicklas, M., Peng, J., Liu, T., Fobes, D., Flesch, E., & Mao, Z. Q. (2008). Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr_1-xCa_x)₃Ru₂O₇. Physical Review B - Condensed Matter and Materials Physics, 78(18), [180407(R)]. https://doi.org/10.1103/PhysRevB.78.180407

Qu Z, Spinu L, Yuan H, Dobrosavljević V, Bao W, Lynn JW et al. Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr_1-xCa_x)₃Ru₂O₇. Physical Review B - Condensed Matter and Materials Physics. 2008 Nov;78(18):180407(R). Epub 2008 Nov 14. doi: 10.1103/PhysRevB.78.180407

Qu, Zhe ; Spinu, Leonard ; Yuan, Huiqiu et al. / Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr_1-xCa_x)₃Ru₂O₇. In: Physical Review B - Condensed Matter and Materials Physics. 2008 ; Vol. 78, No. 18.