Heavy electron superconductors

2007 ◽  
pp. 209-216 ◽  
Author(s):  
Kazuo Ueda ◽  
T. Maurice Rice
Keyword(s):  
Heavy Electron ◽  
Electron Superconductors

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

Fermi surface and effective masses for the heavy-electron superconductors UPt3

1988 ◽  
Vol 68 (2) ◽  
pp. 245-249 ◽  
Author(s):  
M.R. Norman ◽  
R.C. Albers ◽  
A.M. Boring ◽  
N.E. Christensen
Keyword(s):  
Fermi Surface ◽  
Effective Masses ◽  
Heavy Electron ◽  
Electron Superconductors

BCS: THE SCIENTIFIC "LOVE OF MY LIFE"

2010 ◽  
Vol 24 (20n21) ◽  
pp. 3983-3998 ◽  
Author(s):  
Philip W. Anderson
Keyword(s):  
Magnetic Transition ◽  
Spinor Representation ◽  
S Wave ◽  
Metal Compounds ◽  
Dynamic Screening ◽  
Magnetic Insulators ◽  
Heavy Electron ◽  
Relative Wave Function ◽  
Electron Superconductors ◽  
Overlapping Classes

After short comments on my early addenda to BCS — gauge invariance and the Anderson–Higgs mechanism, the dirty superconductor "theorem," and the spinor representation — I focus on the interaction mechanisms which cause electron–electron pairing. These bifurcate into two almost non-overlapping classes. In order to cause electrons to pair in spite of the strong, repulsive, instantaneous Coulomb vertex, the electrons can evade each others' propinquity on the same site at the same time either dynamically, by retaining Γ0 (s-wave) relative symmetry, but avoiding each other in time — called "dynamic screening" — or by assuming a non-symmetric relative wave function, avoiding each other in space. All simple metals and alloys, including all the (so far) technically useful superconductors, follow the former scheme. But starting with the first discovery of "heavy-electron" superconductors in 1979, and continuing with the "organics" and the magnetic transition metal compounds such as the cuprates and the iron pnictides, it appears that the second class may turn out to be numerically superior and theoretically more fascinating. The basic interaction in many of these cases appears to be the "kinetic exchange" or superexchange characteristic of magnetic insulators.

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.

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