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2?0/kBTc Ratio and Temperature Dependence of the Superfluid Density in Overdoped La2-xSrxCuO4

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DOI: 10.4236/jmp.2010.16050    3,389 Downloads   7,164 Views Citations

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.

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M. Eremin and D. Sunyaev, "2?0/kBTc Ratio and Temperature Dependence of the Superfluid Density in Overdoped La2-xSrxCuO4," Journal of Modern Physics, Vol. 1 No. 6, 2010, pp. 357-359. doi: 10.4236/jmp.2010.16050.

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