Nonlinear properties of ferromagnetic La 1-xCa xMnO 3 single crystals

V. Markovich, Y. Yuzhelevski, G. Gorodetsky, G. Jung, C. J. Van Der Beek, Ya M. Mukovskii

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The resistive and magnetic properties of La 1-x Ca x MnO 3 single crystals are investigated. In particular, properties of close-to-critically doped crystals with x = 0.22 are confronted with those of underdoped crystals with x = 0.18 and x = 0.2 and optimally doped crystals with x = 0.3. A systematic investigation of nonlinear transport shows that the critically doped crystal does not simply constitute an intermediate case between strongly nonlinear underdoped and linear, optimally doped one. The observed low-temperature resistivity increase can be interpreted in terms of orbital ordering or as a manifestation of an intrinsic tunnelling mechanism. The transport measurements have been completed by magneto-optic investigations which suggest that the low temperature resistivity of the underdoped x = 0.18 compound is dominated by tunnelling through intrinsic barriers associated with twin domains, while phase separation dominates in the critically doped x = 0.22 compound.

Original languageEnglish
Pages (from-to)295-300
Number of pages6
JournalEuropean Physical Journal B
Issue number3
StatePublished - 1 Oct 2003

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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