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Non-linear conduction in a single crystal of charge-orderedPr$_{0.63}$Ca$_{0.37}$MnO$_{3}$ has been investigated in an applied magneticfield. In zero field, the non-linear conduction, which starts at T$<$T$_{CO}$can give rise to a region of negative differential resistance (NDR) which showsup below the N\'eel temperature. Application of a magnetic field inhibits theappearance of NDR and makes the non-linear conduction strongly hysteritic oncycling of the bias current. This is most severe in the temperature range wherethe charge ordered state melts in an applied magnetic field. Our experimentstrongly suggests that application of a magnetic field in the CO regime causesa coexistance two phases.Comment: 4 pages TeX; 5 eps figures; Submitted to Phys. Rev.

physical review. b, condensed matter

Nonlinear conduction in charge-ordered<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Pr</mml:mi></mml:mrow><mml:mrow><mml:mn>0.63</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mrow><mml:mn>0.37</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">MnO</mml:mi></mml:mrow><mml:mrow><mml:…

Nonlinear conduction in charge-orderedPr0.63Ca0.37MnO