Electromagnetic power absorption by collective modes in unconventional superconductors

P. J. Hirschfeld; W. O. Putikka; P. Wölfle

doi:10.1103/PhysRevLett.69.1447

← Back to search

Electromagnetic power absorption by collective modes in unconventional superconductors

P. J. Hirschfeld, W. O. Putikka, P. Wölfle

DOI 10.1103/PhysRevLett.69.1447 · Physical Review Letters

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We calculate the gauge-invariant response of an unconventional E1 state superconductor to electromagnetic fields in the collisionless limit using a matrix kinetic equation approach. We show that, despite broadening by nodal quasiparticles and screening currents, excitonic modes with collective frequencies of order the superconducting gap frequency should be observable as large, well-defined peaks in the power absorption. Such an observation would be a definitive signal for unconventional superconductivity. We further argue that the effect of collision broadening in real samples should be small at low temperatures.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
UBe13 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
CeCu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
URu2Si2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown