Charge fluctuations, spin fluctuations, and superconductivity in the Anderson lattice model of heavy-fermion systems

1988 ◽  
Vol 37 (7) ◽  
pp. 3782-3785 ◽  
Author(s):  
A. Houghton ◽  
N. Read ◽  
H. Won
Keyword(s):  
Lattice Model ◽  
Heavy Fermion ◽  
Spin Fluctuations ◽  
Charge Fluctuations ◽  
Fermion Systems ◽  
Heavy Fermion Systems

Spin fluctuations near the magnetic instability in heavy-fermion systems

1997 ◽  
Vol 230-232 ◽  
pp. 321-323 ◽  
Author(s):  
S. Kambe ◽  
J. Flouquet ◽  
P. Lejay ◽  
P. Haen
Keyword(s):  
Heavy Fermion ◽  
Spin Fluctuations ◽  
Magnetic Instability ◽  
Fermion Systems ◽  
Heavy Fermion Systems

Anisotropic Spin Fluctuations in the Heavy Fermion Systems: Case Studies of CePd5Al2and NpPd5Al2

2012 ◽  
Vol 81 (Suppl.B) ◽  
pp. SB003 ◽  
Author(s):  
Hironori Sakai ◽  
Hiroyuki Chudo ◽  
Yo Tokunaga ◽  
Shinsaku Kambe ◽  
Yoshinori Haga ◽  
...  
Keyword(s):  
Case Studies ◽  
Heavy Fermion ◽  
Spin Fluctuations ◽  
Fermion Systems ◽  
Heavy Fermion Systems

Anisotropy of antiferromagnetic spin fluctuations in the heavy fermion superconductors of CeMIn5 and PuMGa5 (M=Co, Rh)

2010 ◽  
Vol 1264 ◽  
Author(s):  
Hironori Sakai ◽  
Shinsaku Kambe ◽  
Yo Tokunaga ◽  
Yoshinori Haga ◽  
Seung -H. Baek ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Lattice Relaxation ◽  
Spin Fluctuations ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Spin Lattice ◽  
Fermion Systems ◽  
Heavy Fermion Systems ◽  
Order Of Magnitude ◽  
Antiferromagnetic Spin

AbstractThe anisotropy of antiferromagnetic spin fluctuations has been investigated microscopically in the heavy fermion systems of CeMIn5 and PuMGa5 (M=Co, Rh) by means of nuclear magnetic resonance (NMR). Both systems are known to be relatively high-Tc superconductors among the heavy fermion systems, especially PuCoGa5, which has a Tc=18.5 K almost one order of magnitude larger than for CeCoIn5 ( Tc=2.3 K). Analysis of the Knight shift and spin-lattice relaxation rates suggests XY-type anisotropy in the antiferromagnetic spin fluctuations in the normal states of these unconventional superconductors. Moreover, the 115 superconductors with larger XY-type fluctuations have a higher Tc, compared to the anisotropy of spin fluctuations in the related paramagnetic system UFeGa5 and antiferromagnets UPtGa5, NpCoGa5, NpFeGa5.

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