Resistivity, Hall effect and AC susceptibility of electrochemically oxidized La<sub>2-x</sub>Sr<sub>x</sub>CuO<sub>4</sub> (x=0 and 0.15)
R Suryanarayanan; W Paulus; M S R Rao; O Gorochov; L Ouhammou; G Heger; R Suryanarayanan; Lab. de Phys. des Solides de Bellevue, CNRS, Meudon, France; W Paulus; Lab. de Phys. des Solides de Bellevue, CNRS, Meudon, France; M S R Rao; Lab. de Phys. des Solides de Bellevue, CNRS, Meudon, France; O Gorochov; Lab. de Phys. des Solides de Bellevue, CNRS, Meudon, France; L Ouhammou; Lab. de Phys. des Solides de Bellevue, CNRS, Meudon, France; G Heger; Lab. de Phys. des Solides de Bellevue, CNRS, Meudon, France
Журнал:
Superconductor Science and Technology
Дата:
1992-02-01
Аннотация:
La<sub>2</sub>CuO<sub>4</sub> after electrochemical oxidation in 1N NaOH solution shows resistivity and diamagnetic transitions respectively at 36 K and at 35 K, confirming the recent observations of Wattiaux et al. (1990). Hall data show the presence of holes as in the case of Sr- or Ba-substituted La<sub>2</sub>CuO<sub>4</sub> superconductors. A similar treatment of the superconductor (T<sub>c</sub>=35 K) La<sub>1.85</sub>Sr<sub>0.15</sub>CuO<sub>4</sub> did not alter the T<sub>c</sub>.
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