The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors

J. Hinton, E. Thewalt, Z. Alpichshev, F. Mahmood, J. Koralek, M. Chan, M. Veit, C. Dorow, N. Barišić, A. Kemper, D. Bonn, W. Hardy, R. Liang, N. Gedik, M. Greven, A. Lanzara, J. Orenstein, Scientific Reports 6 (2016).

Download
No fulltext has been uploaded. References only!

Journal Article | Published | English
Author
; ; ; ; ; ; ; ; ; ; ;
All
Abstract
In the underdoped copper-oxides, high-temperature superconductivity condenses from a nonconventional metallic "pseudogap" phase that exhibits a variety of non-Fermi liquid properties. Recently, it has become clear that a charge density wave (CDW) phase exists within the pseudogap regime. This CDW coexists and competes with superconductivity (SC) below the transition temperature Tc, suggesting that these two orders are intimately related. Here we show that the condensation of the superfluid from this unconventional precursor is reflected in deviations from the predictions of BSC theory regarding the recombination rate of quasiparticles. We report a detailed investigation of the quasiparticle (QP) recombination lifetime, τqp, as a function of temperature and magnetic field in underdoped HgBa2CuO4+δ (Hg-1201) and YBa2Cu3O6+x (YBCO) single crystals by ultrafast time-resolved reflectivity. We find that τqp (T) exhibits a local maximum in a small temperature window near Tc that is prominent in underdoped samples with coexisting charge order and vanishes with application of a small magnetic field. We explain this unusual, non-BCS behavior by positing that Tc marks a transition from phase-fluctuating SC/CDW composite order above to a SC/CDW condensate below. Our results suggest that the superfluid in underdoped cuprates is a condensate of coherently-mixed particle-particle and particle-hole pairs.
Publishing Year
Date Published
2016-04-13
Journal Title
Scientific Reports
Volume
6
IST-REx-ID

Cite this

Hinton J, Thewalt E, Alpichshev Z, et al. The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors. Scientific Reports. 2016;6. doi:10.1038/srep23610
Hinton, J., Thewalt, E., Alpichshev, Z., Mahmood, F., Koralek, J., Chan, M., … Orenstein, J. (2016). The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors. Scientific Reports, 6. https://doi.org/10.1038/srep23610
Hinton, James, E Thewalt, Zhanybek Alpichshev, Fahad Mahmood, Jake Koralek, Mun Chan, Michael Veit, et al. “The Rate of Quasiparticle Recombination Probes the Onset of Coherence in Cuprate Superconductors.” Scientific Reports 6 (2016). https://doi.org/10.1038/srep23610.
J. Hinton et al., “The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors,” Scientific Reports, vol. 6, 2016.
Hinton J, Thewalt E, Alpichshev Z, Mahmood F, Koralek J, Chan M, Veit M, Dorow C, Barišić N, Kemper A, Bonn D, Hardy W, Liang R, Gedik N, Greven M, Lanzara A, Orenstein J. 2016. The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors. Scientific Reports. 6.
Hinton, James, et al. “The Rate of Quasiparticle Recombination Probes the Onset of Coherence in Cuprate Superconductors.” Scientific Reports, vol. 6, Nature Publishing Group, 2016, doi:10.1038/srep23610.

Export

Marked Publications

Open Data IST Research Explorer

Search this title in

Google Scholar