scholarly journals Highly Correlated Electron State in Oxide Superconductors

2013 ◽  
Vol 106 (0) ◽  
pp. 31-42
Author(s):  
H. Matsumoto ◽  
M. Tachiki
Keyword(s):  
Electron State ◽  
Oxide Superconductors ◽  
Correlated Electron ◽  
Highly Correlated

scholarly journals Correlated electron state in CeCu2Si2 controlled through Si to P substitution

2017 ◽  
Vol 1 (3) ◽  
Author(s):  
Y. Lai ◽  
S. M. Saunders ◽  
D. Graf ◽  
A. Gallagher ◽  
K.-W. Chen ◽  
...  
Keyword(s):  
Electron State ◽  
Correlated Electron

Crystallographic Features of Electronic States in the Highly-Correlated Electronic System Sr1-xSmxMnO3 around x = 0.50

2016 ◽  
Vol 879 ◽  
pp. 2158-2163 ◽  
Author(s):  
Misato Yamagata ◽  
Yasuhide Inoue ◽  
Yasumasa Koyama
Keyword(s):  
Electronic States ◽  
Electronic System ◽  
Electron System ◽  
Correlated Electron ◽  
Antiferromagnetic Ordering ◽  
Incommensurate Modulation ◽  
Charge Modulations ◽  
Highly Correlated ◽  
Correlated Electron System ◽  
Coexistence State

The highly-correlated electron system Sr1-xSmxMnO3 (SSMO) with the simple-perovskite structure has been found to exhibit fascinating electronic states accompanying antiferromagnetic and ferromagnetic orderings. It was, in particular, reported that the electronic state for 0.46 ≤ x ≤ 0.54 was characterized by the coexistence state consisting of the A-type antiferromagnetic and ferromagnetic states. However, the features of the coexistence state in this Sm-content range have not been understood yet. We have thus investigated the crystallographic features of prepared SSMO samples with 0.46 ≤ x ≤ 0.55, mainly by transmission electron microscopy. As a result, all prepared SSMO samples were first confirmed to have the orthorhombic-Pnma structure at 300 K. When the temperature was lowered from 300 K, in the case of x=0.47, the disordered-Pnma state was found to be transformed into an orbital-modulated (OM) state accompanying an incommensurate modulation. The notable feature of the OM state is that the state becomes unstable with increasing Sm contents at 100 K. In other words, the OM state was never changed into the CE-type state with the orbital and charge modulations. In addition, no orbital-ordered state for the A-type antiferromagnetic ordering was also found for 0.46 ≤ x ≤ 0.55.

HEAVY FERMIONS — THEIR MAGNETISM AND SUPERCONDUCTIVITY

1993 ◽  
Vol 07 (01n03) ◽  
pp. 2-8 ◽  
Author(s):  
F. STEGLICH ◽  
C. GEIBEL ◽  
A. LOIDL ◽  
G. SPARN ◽  
C. D. BREDL ◽  
...  
Keyword(s):  
Long Range ◽  
Heavy Fermion ◽  
Local Moment ◽  
Antiferromagnetic Order ◽  
Electron Systems ◽  
Correlated Electron Systems ◽  
Cooperative Phenomena ◽  
Correlated Electron ◽  
Highly Correlated ◽  
Heavy Fermion Superconductivity

Heavy-fermion compounds are ideally suited to study cooperative phenomena in highly correlated electron systems. We discuss local-moment magnetism and heavy-fermion band magnetism in the exemplary systems CeCu 2 Ge 2 and Ni-rich Ce(Cu 1− x Ni x )2 Ge 2, respectively. In addition, the coexistence of long-range antiferromagnetic order and heavy-fermion superconductivity in UM 2 Al 3 (M: Ni, Pd) will be addressed.

scholarly journals Recent Progress in High Field Magnetism

1995 ◽  
Vol 48 (2) ◽  
pp. 187 ◽  
Author(s):  
Muneyuki Date
Keyword(s):  
High Field ◽  
Recent Progress ◽  
Field Studies ◽  
Liquid Oxygen ◽  
Research Centre ◽  
Correlated Electron ◽  
Highly Sensitive ◽  
Highly Correlated ◽  
Induced Transparency ◽  
Extreme Materials

Recent progress in high field magnetism performed mainly in the Research Centre for Extreme Materials, Osaka University, is reported, with a short survey of the Centre's history. The main activities are in the fields of magnetism and superconductivity where a common keyword is highly correlated electron physics. A rich variety of effects such as metamagnetism, field-induced electronic transitions etc. is summarised. High field studies are also effective in the fields of atomic and molecular sciences; for example, field-induced transparency in liquid oxygen, and diamagnetic orientation of organic and biological materials. New frontiers in high field technologies are discussed, including a highly sensitive magnetometer using the dynamical Faraday effect.

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