Versatile and competing spin-charge-orbital orders in the bilayered manganite system Pr(Sr1yCay)2Mn2O7

Y. Tokunaga, T. J. Sato, M. Uchida, R. Kumai, Y. Matsui, T. Arima, and Y. Tokura
Phys. Rev. B 77, 064428 – Published 25 February 2008

Abstract

Electronic-phase competition has been investigated for single crystals of half-doped bilayer-structure manganites, Pr(Sr1yCay)2Mn2O7 (0y1.0), with controlled one-electron bandwidth (W). For y0.4, the A-type antiferromagnetic (AF) state with x2y2 orbital order shows up as the ground state while accompanying the short-range vertical charge order with the periodicity of 4a0 (a00.4nm). For y>0.4, with reduced W, the CE-type AF state emerges with the ordered staggered orbitals (3x2r23y2r2) whose diagonal stripes undergo the 90° rotation with decreasing temperature, perhaps coupled with the evolution of spin correlation.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 15 December 2007

DOI:https://doi.org/10.1103/PhysRevB.77.064428

©2008 American Physical Society

Authors & Affiliations

Y. Tokunaga1,2, T. J. Sato3, M. Uchida2, R. Kumai4, Y. Matsui5, T. Arima2,6, and Y. Tokura1,2,4,7

  • 1Multiferroics Project, ERATO, Japan Science and Technology Agency (JST), Bunkyo-ku, Tokyo 113-8656, Japan
  • 2Spin Superstructure Project, ERATO, JST, Tsukuba, Ibaraki 305-8562, Japan
  • 3Neutron Science Laboratory, Institute for Solid State Physics, University of Tokyo, 106-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
  • 4Correlated Electron Research Center (CERC), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8562, Japan
  • 5Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
  • 6Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
  • 7Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 77, Iss. 6 — 1 February 2008

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×