NMR Evidence for ad-Wave Normal-State Pseudogap [Phys. Rev. Lett. 78, 721 (1997)]

Quasiparticle relaxation dynamics in superconductors with different gap structures: Theory and experiments onYBa2Cu3Kabanov1, Demšar2, Podobnik3 et al. 1999Phys. Rev. B323534525View full textAdd to dashboardCite

“…Plotting the temperature T * and T c as a function of δ in Figure 6, we find that T * drops with increasing doping in a characteristic fashion, following the so-called "pseudogap" behaviour reported by other experimental techniques [25][26][27] .…”

Imbalancedd-wave superfluids in the BCS-BEC crossover regime at finite temperatures

“…The current results, derived in the context of cold atomic gases, can also shed light on properties of the pseudogap state in the underdoped regime. This pseudogap (which appears to have the same d-wave symmetry as the order parameter [12]) has been associated either with some competing order parameter in the normal state, or with the existence of "pre-formed pairs", [13] where a notable candidate is the non-condensed bipolaron [14]. Also in the current treatment, pre-formed d-wave pairs appear, and we present results for the pair binding energy of these objects as a function of temperature, density and interatomic interaction strength.…”

Raman scattering versus infrared conductivity: Evidence for one-dimensional conduction inLa2−xSrxVenturini1, Zhang2, Hackl3 et al. 2002Phys. Rev. B449310View full textAdd to dashboardCite

“…Hence, the combination of IR and Raman spectroscopies provides not only additional evidence for the formation of stripes in LSCO but also clarifies the low-energy electron dynamics. The onset temperature for the formation of stripes is identified by several authors 26,27 with the temperature T * where a pseudogap, 6 anisotropic in the momerntum space, 28,29 opens in the charge excitation spectrum. T * is of the order of 400 K for LSCO with x ≃ 0.10, consistent with the present IR observations which already show a well-defined excitation peak at room temperature.…”