TITLE:
2?0/kBTc Ratio and Temperature Dependence of the Superfluid Density in Overdoped La2-xSrxCuO4
AUTHORS:
Mikhail Eremin, Daniil Sunyaev
KEYWORDS:
Supefluid Density, Overdoped La2-xSrxCuO4, Short Range Pairing
JOURNAL NAME:
Journal of Modern Physics,
Vol.1 No.6,
December
29,
2010
ABSTRACT: Using band structure parameters extracted from photoemission data by Yoshida et al., Phys. Rev. B., 2006, we have analyzed the temperature dependence of the superfluid density in overdoped La2-xSrxCuO4. We point out that the temperature behavior 1/λab2 is very sensitive to the ratio 2?0/kBTc and have estimated this quantity, using experimental data obtained previously by Panagopoulos et al., Phys. Rev. B., 1999. We compare the results with those obtained from NMR / NQR (Nuclear Magnetic Resonance / Nuclear Quadrupole Resonance) (Mayer et al., J. Phys, Cond. Mat., 2007) and scanning tunneling spectros-copy (Kato et al., Physica C, 2007) data.