Magnetotransport Properties across Verwey Transition in Fe

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概要

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• We have studied the magnetoresistance (MR) of high-quality Fe<inf>3</inf>O<inf>4</inf>thin films across the Verwey transition temperature (T_{\text{V}}). Different from unsaturated MR observed in many other Fe<inf>3</inf>O<inf>4</inf>films, MR of the present film at a high magnetic field is almost independent of the field, consistent with the fully saturated magnetization. The MR at low field strongly depends on temperature and orientation around T_{\text{V}}: While out-of-plane MR sharply decreases from {\sim}{+7} to {\sim}{-5}%, in-plane MR abruptly increases from {\sim}{-6} to {\sim}{+3}% on cooling across T_{\text{V}}.

• 2013-07-25

著者

• Susaki Tomofumi

  Secure Materials Center, Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan

• Hosono Hideo

  Secure Materials Center, Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan

• Matsuzaki Kosuke

  Secure Materials Center, Materials and Structures Laboratory, Tokyo Institute of Technology, Yokohama 226-8503, Japan

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