Abstract
The interplay between charge and spin degrees of freedom is a key ingredient of the colossal magnetoresistance in perovskite manganites. However, our knowledge of such an interplay was limited to its static aspect, and very little was known regarding its dynamics. Here, we show that the ac (optical) conductivity of perovskite manganite Pr0.6Sr0.4MnO3 (TC=297K) under magnetic field does not show such a universal M2 scaling (M is the magnetization) as observed in the dc conductivity, but shows a marginal £ M £1 dependence in the critical regime. This result indicates a unique interplay between fluctuating spin and charge in this series of compounds.
| Original language | English |
|---|---|
| Article number | 012418 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 72 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2005 |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Dynamics of the charge-spin interplay in a perovskite manganite. / Waku, K.; Suzuki, T.; Nomura, T.; Katsufuji, Takuro.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 72, No. 1, 012418, 2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Dynamics of the charge-spin interplay in a perovskite manganite
AU - Waku, K.
AU - Suzuki, T.
AU - Nomura, T.
AU - Katsufuji, Takuro
PY - 2005
Y1 - 2005
N2 - The interplay between charge and spin degrees of freedom is a key ingredient of the colossal magnetoresistance in perovskite manganites. However, our knowledge of such an interplay was limited to its static aspect, and very little was known regarding its dynamics. Here, we show that the ac (optical) conductivity of perovskite manganite Pr0.6Sr0.4MnO3 (TC=297K) under magnetic field does not show such a universal M2 scaling (M is the magnetization) as observed in the dc conductivity, but shows a marginal £ M £1 dependence in the critical regime. This result indicates a unique interplay between fluctuating spin and charge in this series of compounds.
AB - The interplay between charge and spin degrees of freedom is a key ingredient of the colossal magnetoresistance in perovskite manganites. However, our knowledge of such an interplay was limited to its static aspect, and very little was known regarding its dynamics. Here, we show that the ac (optical) conductivity of perovskite manganite Pr0.6Sr0.4MnO3 (TC=297K) under magnetic field does not show such a universal M2 scaling (M is the magnetization) as observed in the dc conductivity, but shows a marginal £ M £1 dependence in the critical regime. This result indicates a unique interplay between fluctuating spin and charge in this series of compounds.
UR - http://www.scopus.com/inward/record.url?scp=33749158860&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749158860&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.72.012418
DO - 10.1103/PhysRevB.72.012418
M3 - Article
AN - SCOPUS:33749158860
VL - 72
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 1
M1 - 012418
ER -