Abstract
We report an unusual nearly ferromagnetic heavy-mass state with a surprisingly large Wilson ratio Rw (e.g., Rw ∼700 for x=0.2) in double layered ruthenates (Sr1-x Cax) 3 Ru2 O7 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.
| Original language | English (US) |
|---|---|
| Article number | 180407 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 78 |
| Issue number | 18 |
| DOIs | |
| State | Published - Nov 14 2008 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr1-x Cax) 3 Ru2 O7. / Qu, Zhe; Spinu, Leonard; Yuan, Huiqiu; Dobrosavljević, Vladimir; Bao, Wei; Lynn, Jeffrey W.; Nicklas, M.; Peng, Jin; Liu, Tijiang; Fobes, David; Flesch, Etienne; Mao, Zhiqiang.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 18, 180407, 14.11.2008.Research output: Contribution to journal › Article
TY - JOUR
T1 - Unusual heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio in the double layered ruthenates (Sr1-x Cax) 3 Ru2 O7
AU - Qu, Zhe
AU - Spinu, Leonard
AU - Yuan, Huiqiu
AU - Dobrosavljević, Vladimir
AU - Bao, Wei
AU - Lynn, Jeffrey W.
AU - Nicklas, M.
AU - Peng, Jin
AU - Liu, Tijiang
AU - Fobes, David
AU - Flesch, Etienne
AU - Mao, Zhiqiang
PY - 2008/11/14
Y1 - 2008/11/14
N2 - We report an unusual nearly ferromagnetic heavy-mass state with a surprisingly large Wilson ratio Rw (e.g., Rw ∼700 for x=0.2) in double layered ruthenates (Sr1-x Cax) 3 Ru2 O7 with 0.08
AB - We report an unusual nearly ferromagnetic heavy-mass state with a surprisingly large Wilson ratio Rw (e.g., Rw ∼700 for x=0.2) in double layered ruthenates (Sr1-x Cax) 3 Ru2 O7 with 0.08
UR - http://www.scopus.com/inward/record.url?scp=57349156191&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=57349156191&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.78.180407
DO - 10.1103/PhysRevB.78.180407
M3 - Article
VL - 78
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 18
M1 - 180407
ER -