On the electron superconductors Nd2−x Ce x CuO4−y

G Balakrishnan; R Vijayaraghavan

doi:10.1007/bf02747330

Studies of static magnetic order in electron-superconductors and their parent compounds

Nature ◽

10.1038/338049a0 ◽

1989 ◽

Vol 338 (6210) ◽

pp. 49-51 ◽

Cited By ~ 110

Author(s):

G. M. Luke ◽

B. J. Sternlieb ◽

Y. J. Uemura ◽

J. H. Brewer ◽

R. Kadono ◽

...

Keyword(s):

Magnetic Order ◽

Electron Superconductors

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Experiments on the Heavy Electron Superconductors UBe13 and URu2Si2

Theoretical and Experimental Aspects of Valence Fluctuations and Heavy Fermions ◽

10.1007/978-1-4613-0947-5_7 ◽

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

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Heavy Electron Superconductors — Some Consequences of the p-Wave Pairing

Springer Series in Solid-State Sciences - Theory of Heavy Fermions and Valence Fluctuations ◽

10.1007/978-3-642-82618-4_20 ◽

1985 ◽

pp. 267-276 ◽

Cited By ~ 19

Author(s):

K. Ueda ◽

T. M. Rice

Keyword(s):

P Wave ◽

Wave Pairing ◽

Heavy Electron ◽

Electron Superconductors

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

Solid State Communications ◽

10.1016/0038-1098(88)91109-x ◽

1988 ◽

Vol 68 (2) ◽

pp. 245-249 ◽

Cited By ~ 79

Author(s):

M.R. Norman ◽

R.C. Albers ◽

A.M. Boring ◽

N.E. Christensen

Keyword(s):

Fermi Surface ◽

Effective Masses ◽

Heavy Electron ◽

Electron Superconductors

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Collective modes of anisotropic narrow-band Bloch-electron superconductors with nearest-neighbor pairing interaction

Physical Review B ◽

10.1103/physrevb.50.16623 ◽

1994 ◽

Vol 50 (22) ◽

pp. 16623-16630 ◽

Cited By ~ 5

Author(s):

Susumu Misawa

Keyword(s):

Nearest Neighbor ◽

Narrow Band ◽

Collective Modes ◽

Pairing Interaction ◽

Bloch Electron ◽

Electron Superconductors

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BCS: THE SCIENTIFIC "LOVE OF MY LIFE"

International Journal of Modern Physics B ◽

10.1142/s0217979210056426 ◽

2010 ◽

Vol 24 (20n21) ◽

pp. 3983-3998 ◽

Cited By ~ 2

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.

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