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Chemical control of spin chirality in (Nd1−xDyx)2Mo2O7

S. Iguchi1, D. Hashimoto1, Y. Taguchi2, and Y. Tokura1,3,4

  • 1Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan
  • 2Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
  • 3Spin Superstructure Project (SSS), ERATO, Japan Science and Technology Corporation (JST), Tsukuba 305-8562, Japan
  • 4Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8562, Japan

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Phys. Rev. B 69, 220401(R) – Published 7 June, 2004

DOI: https://doi.org/10.1103/PhysRevB.69.220401

Abstract

Magnetization and Hall resistivity have been investigated for single crystals of Dy-doped Nd2Mo2O7. A sharp decrease of the Hall resistivity upon a metamagnetic transition, perhaps associated with magnetic-field (H) induced flop of Dy3+ moments, has been observed in the Dy-doped crystals only for H‖[111] direction. In addition, the sign of the Hall resistivity at a high field, both for H‖[100] and for H‖[111], changes with the Dy doping. These results are explained in terms of the sign change of Mo spin chirality that is controlled by the Dy3+ moments with a different sign of f−d interaction from the Nd3+ moments.

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Outline

Information

Phys. Rev. B 69, 220401(R)– Published 7 June, 2004
  • Received 19 February 2004

© 2004 American Physical Society

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