Scaling and the Magnetic Origin of Emergent Behavior in Correlated Electron Superconductors

MRS Bulletin ◽  
2005 ◽  
Vol 30 (6) ◽  
pp. 442-446 ◽  
Author(s):  
Nicholas Curro ◽  
Zachary Fisk ◽  
David Pines
Keyword(s):  
Heavy Fermion ◽  
Energy Scale ◽  
Emergent Behavior ◽  
Kondo Lattice ◽  
New Materials ◽  
Correlated Electron ◽  
Heavy Electron ◽  
Heavy Fermion Materials ◽  
Magnetic Origin ◽  
Electron Superconductors

AbstractWe discuss three examples of emergent behavior in correlated electron matter, in which the discovery of scaling of several measured quantities with a single energy scale provides a key clue to a common magnetic origin: the emergence of itinerant (mobile) electronic behavior from the Kondo lattice of localized f electrons found in cerium- and uranium-based heavy fermion materials; the emergence of unconventional superconductivity in the cuprate and “high-temperature” heavy electron Ce- and Pu-based 1-1-5 superconductors; and the emergence of pseudogap behavior in the underdoped and optimally doped cuprate superconductors.We conclude with some speculation on ways in which these novel perspectives might be used to design new materials.

scholarly journals Quantum engineered Kondo lattices

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jeremy Figgins ◽  
Laila S. Mattos ◽  
Warren Mar ◽  
Yi-Ting Chen ◽  
Hari C. Manoharan ◽  
...  
Keyword(s):  
Real Space ◽  
Kondo Lattice ◽  
Kondo Temperature ◽  
Strongly Correlated ◽  
Many Body ◽  
Strongly Correlated Electron ◽  
Correlated Electron ◽  
Spatially Extended ◽  
Heavy Fermion Materials ◽  
Atomic Manipulation

AbstractAtomic manipulation techniques have provided a bottom-up approach to investigating the unconventional properties and complex phases of strongly correlated electron materials. By engineering artificial systems containing tens to thousands of atoms with tailored electronic or magnetic properties, it has become possible to explore how quantum many-body effects emerge as the size of a system is increased from the nanoscale to the mesoscale. Here we investigate both theoretically and experimentally the quantum engineering of nanoscale Kondo lattices – Kondo droplets – exemplifying nanoscopic replicas of heavy-fermion materials. We demonstrate that by changing a droplet’s real-space geometry, we can not only create coherently coupled Kondo droplets whose properties asymptotically approach those of a quantum-coherent Kondo lattice, but also markedly increase or decrease the droplet’s Kondo temperature. Furthermore we report on the discovery of a new quantum phenomenon – the Kondo echo – a signature of droplets containing Kondo holes functioning as direct probes of spatially extended, quantum-coherent Kondo cloud correlations.

The High-Temperature Phonon Anomalies of α-uranium.

2012 ◽  
Vol 1444 ◽  
Author(s):  
Peter S. Riseborough
Keyword(s):  
High Temperature ◽  
Fermi Energy ◽  
Heavy Fermion ◽  
Electronic Energy ◽  
High Temperature Phase ◽  
Energy Scale ◽  
Temperature Phase ◽  
Resonant Coupling ◽  
Heavy Fermion Materials ◽  
Increasing Temperature

ABSTRACTThere is a growing body of evidence that a number of mixed-valent and heavy-fermion materials show renormalized hybridization gaps either at the Fermi-energy or close to the Fermi-energy. In the former case, a heavy-fermion semiconducting state occurs and in the later case, the system remains metallic at low temperatures. The magnitudes of the hy-bridization gaps are observed to decrease with increasing temperature. The existence of a low-energy electronic energy scale creates a possibility that the Born-Oppenheimer ap-proximation may fail and that there may be a resonant coupling between the phonons and the electronic excitations. Here we argue that such a mechanism may be the cause of the phonon anomalies observed in neutron scattering experiments on the high-temperature phase of alpha-uranium.

scholarly journals Energy-scale cascade and correspondence between Mott and Kondo lattice physics

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Danqing Hu ◽  
Ning-Hua Tong ◽  
Yi-feng Yang
Keyword(s):  
Energy Scale ◽  
Kondo Lattice

scholarly journals Hyperfine couplings as a probe of orbital anisotropy in heavy-fermion materials

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
P. Menegasso ◽  
J. C. Souza ◽  
I. Vinograd ◽  
Z. Wang ◽  
S. P. Edwards ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Heavy Fermion Materials ◽  
Hyperfine Couplings

Kondo lattice and the formation of a heavy-fermion state

1986 ◽  
Vol 34 (3) ◽  
pp. 1918-1925 ◽  
Author(s):  
Zlatko Tesanovic ◽  
Oriol T. Valls
Keyword(s):  
Heavy Fermion ◽  
Kondo Lattice

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.

Experiments on the Heavy Electron Superconductors UBe13 and URu2Si2

1987 ◽  
pp. 47-55
Author(s):  
M. B. Maple ◽  
J. W. Chen ◽  
Y. Dalichaouch ◽  
T. Kohara ◽  
S. E. Lambert ◽  
...  
Keyword(s):  
Heavy Electron ◽  
Electron Superconductors

Electron Spectroscopy of Heavy-Fermion Materials

1990 ◽  
Vol T31 ◽  
pp. 232-238 ◽  
Author(s):  
J W Allen ◽  
J-S Kang ◽  
L-Z Liu ◽  
O Gunnarsson ◽  
N E Christensen ◽  
...  
Keyword(s):  
Electron Spectroscopy ◽  
Heavy Fermion ◽  
Heavy Fermion Materials

The effect of Au and Ni doping on the heavy fermion state of the Kondo lattice antiferromagnet CePtZn

2014 ◽  
Vol 115 (17) ◽  
pp. 17E113 ◽  
Author(s):  
S. K. Dhar ◽  
Y. Aoki ◽  
B. Suemitsu ◽  
R. Miyazaki ◽  
A. Provino ◽  
...  
Keyword(s):  
Heavy Fermion ◽  
Kondo Lattice ◽  
Ni Doping
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