Magnetoresistance in LaNi1−xCoxO3 (0.3≤x≤0.6)
作者： J. Androulakis , J. Giapintzakis
DOI: 10.1016/J.PHYSB.2009.08.039
关键词: Electrical resistivity and conductivity 、 Strongly correlated material 、 Magnetic field 、 Matrix (mathematics) 、 Condensed matter physics 、 Spin-½ 、 Phase (matter) 、 Scattering 、 Magnetoresistance 、 Materials science
摘要: Abstract We report on a detailed study of the electrical resistivity and magnetoresistance metallic members LaNi1−xCoxO3 series with 0.3≤x≤0.6. The low-temperature compounds 0.3≤x≤0.5 exhibits logarithmic temperature dependence that is characteristic systems enhanced spin disorder. attribute decreasing contribution −ln T term to increasing magnetic field suppression disorder in an electronically phase separated matrix by application field, suggest this mechanism primarily responsible for magnetoresistive behavior these compounds. propose two models are based inter-cluster scattering which could explain observed effects.
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