Observation of Spin Helicity Using Nonresonant Circularly Polarized X-ray Diffraction Analysis

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概要

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• We have successfully detected spin chirality in prototypical multiferroic MnWO4 wherein the helical magnetic order induces ferroelectricity using a nonresonant circularly polarized X-ray diffraction technique. The intensity of the magnetic reflection from MnWO4 shows a clear difference between the right- and left-handed circular polarizations of the incident X-ray beam. The ratio of these intensities is in good agreement with theoretical predictions. The results clearly show that this technique is suitable for the investigation of spin chirality. Finally, we studied the spin chirality of another multiferroic material, DyMnO3. Possible applications of this technique are also discussed.

• 2010-04-15

著者

• Arima Taka-hisa

  Institute Of Materials Science University Of Tsukuba

• Sagayama Hajime

  Institute Of Materials Structure Science High Energy Accelerator Research Organization

• Yamasaki Yuichi

  Department Of Applied Physics The University Of Tokyo

• Taniguchi Kouji

  Institute Of Multidisciplinary Research For Advanced Materials Tohoku University

• Takata Masaki

  Riken Spring-8 Center And Crest Japan Science And Technology Agency

• Tokura Yoshinori

  Department Of Applied Physics And Quantum Phase Electronics Center University Of Tokyo

• Abe Nobuyuki

  Institute of Science and Technology, Niigata University

• Ohsumi Hiroyuki

  RIKEN, SPring-8 Center, Sayo, Hyogo 679-5198, Japan

• Arima Taka-hisa

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-857, Japan

• Okuyama Daisuke

  Cross-Correlated Materials Research Group (CMRG), RIKEN Advanced Science Institute (ASI), Wako, Saitama 351-0198, Japan

• Okuyama Daisuke

  Cross-Correlated Materials Research Group (CMRG) and Correlated Electron Research Group (CERG), Advanced Science Institute, RIKEN, Wako, Saitama 351-0198, Japan

• Sakai Souichiro

  RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan

• Morita Takeshi

  RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan

• Komesu Takashi

  RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan

• Yamasaki Yuichi

  Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan

• Ohsumi Hiroyuki

  RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan

• Taniguchi Kouji

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-857, Japan

• Abe Nobuyuki

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-857, Japan

• Takata Masaki

  RIKEN Harima Institute, Kouto, Sayo-cho, Sayo, Hyogo 679-5148, Japan

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