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4 Result(s)

within M. Ausloos Remove this filter Particle and Nuclear Physics Remove this filter

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  1. No Access

    Article

    Anomalous temperature behavior of the resistivity in lightly doped manganites around a metal-insulator phase transition

    An unusual temperature and concentration behavior of the resistivity ρ(T, x) in La0.7Ca0.3Mn1−2x CuxO3 is observed at slight Cu do** (0≤x≤0.05). Namely, the introduction of copper results in a splitting of the ...

    S. Sergeenkov, M. Ausloos, H. Bougrine… in Journal of Experimental and Theoretical Ph… (1999)

  2. No Access

    Article

    Negative magnetoresistance in mixed-valence La0.6Y0.1Ca0.3MnO3: Evidence for charge localization governed by the Curie-Weiss law

    The colossal negative magnetoresistance Δρ observed in La0.6Y0.1Ca0.3MnO3 at B=1 T shows an unusual, nearly perfect symmetry (around the peak temperature T 0=160 K), suggestive of a Curie-Weiss-dominated transpor...

    S. Sergeenkov, H. Bougrine, M. Ausloos… in Journal of Experimental and Theoretical Ph… (1999)

  3. No Access

    Article

    Probing the field-induced variation of the chemical potential in Bi2Sr2CaCu2Oy via magneto-thermopower measurements

    Approximating the shape of the magneto-thermoelectric power (TEP) ΔS(T,H) measured in Bi2Sr2CaCu2Oy by an asymmetric linear triangle of the form ΔS(T,H)≃S p (H)±B ±(H)(T ...

    S. A. Sergeenkov, M. Ausloos in Journal of Experimental and Theoretical Physics (1999)

  4. No Access

    Article

    A sharp decrease of resistivity in La0.7Ca0.3Mn0.96Cu0.04O3: Evidence for Cu-assisted coherent tunneling of spin Polarons

    Nearly a 50% decrease of the resistivity ρ(T, x) is observed upon just 4% Cu do** at the Mn site of La2/3Ca1/3Mn1−x CuxO3. When the observed phenomenon is attributed to a decrease of the spin-polaron energy E σ

    S. A. Sergeenkov, H. Bougrine, M. Ausloos… in Journal of Experimental and Theoretical Ph… (1999)