Abstract
We argue that recently observed superconductivity-induced blue shift of the plasma frequency δωpl in Bi2Sr 2CaCu2O8+δ [Molegraaf et al., Science 295, 2239 (2002)] is related to the change in the integrated dynamical structure factor associated with the development of the spin resonance below T c. We show that the magnitude of δωpl is consistent with the small integrated spectral weight of the resonance, and its temperature dependences closely follow that of the spin-resonance peak. We also discuss the differential optical integral for the conductivity.
Original language | English (US) |
---|---|
Article number | 100504 |
Pages (from-to) | 100504-1-100504-4 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 70 |
Issue number | 10 |
DOIs | |
State | Published - Sep 2004 |
Externally published | Yes |