The magnetic order in multiferroic DyMnO3

Lee, Jenn-MinLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,National Synchrotron Radiation Research Center Taiwan (författare)

With flexibility in tuning their electric and magnetic properties, multiferroics can be used in information exchange and storage in ways that are very different from the present electronic materials. Here we use resonant soft x-ray scattering spectroscopy to study the -type and -type (0, 1-, 0) diffraction peaks from sinusoidal antiferromagnetic spin order in multiferroic DyMnO. By comparing the temperature dependence of ordering wave vectors , peak intensities , and correlation lengths measured at Mn -, O -, and Dy -edges, we show that the nearly perfect locking between the ordering wave vectors from Dy states and Mn 3 orbitals manifesting the second harmonic diffraction peak implies the notable orbital involvement in the coupling between Mn and Dy spins. Our DFT calculations further suggest that the lattice response to different antiferromagnetic ground states (A-type versus E-type) is much weaker in TbMnO, in agreement with previous claim that the symmetric exchange interaction can be an important factor for understanding the ferroelectricity in DyMnO than in TbMnO.

Huang, Shih-WenLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory,Lawrence Berkeley National Laboratory(Swepub:lu)maxl-sha (författare)
Jeng, Horng-TayNational Tsing Hua University (författare)
Shao, Yu-ChengLawrence Berkeley National Laboratory (författare)
Wray, L AndrewNew York University (författare)
Chen, Jin MingNational Synchrotron Radiation Research Center Taiwan (författare)
Qiao, RuiminLawrence Berkeley National Laboratory (författare)
Yang, WanliLawrence Berkeley National Laboratory (författare)
Lin, Jiunn YuanNational Chiao Tung University (författare)
Schoenlein, R WLawrence Berkeley National Laboratory (författare)
Chuang, Yi-DeLawrence Berkeley National Laboratory (författare)
Lunds universitetMAX IV-laboratoriet (creator_code:org_t)

Ingår i:Journal of Electron Spectroscopy and Related Phenomena: Elsevier BV2460368-2048

Av författaren/redakt...: Lee, Jenn-Min; Huang, Shih-Wen; Jeng, Horng-Tay; Shao, Yu-Cheng; Wray, L Andrew; Chen, Jin Ming; visa fler...; Qiao, Ruimin; Yang, Wanli; Lin, Jiunn Yuan; Schoenlein, R W; Chuang, Yi-De; visa färre...

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