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Title: The magnetic order in multiferroic DyMnO3

Journal Article · · Journal of Electron Spectroscopy and Related Phenomena
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [7];  [8];  [7];  [7]
  1. Lund Univ. (Sweden); National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  2. Lund Univ. (Sweden); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. National Tsing Hua Univ., Hsinchu (Taiwan)
  4. Tamkang Univ., Taipei (Taiwan); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. New York Univ. (NYU), NY (United States)
  6. National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  8. National Chiao Tung Univ., Hsinchu (Taiwan)

We report that 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 F-type (0,τ,0) and C-type (0, 1–2τ, 0) diffraction peaks from sinusoidal antiferromagnetic spin order in multiferroic DyMnO3. By comparing the temperature dependence of ordering wave vectors τ, peak intensities I, and correlation lengths λ measured at Mn L2-, O K-, and Dy M5-edges, we show that the nearly perfect locking between the ordering wave vectors from Dy 4f states and Mn 3d 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 TbMnO3, in agreement with previous claim that the symmetric exchange interaction can be an important factor for understanding the ferroelectricity in DyMnO3 than in TbMnO3.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); MOST of Taiwan
Grant/Contract Number:
AC02-05CH11231; 103-2112-M-009-007-MY3
OSTI ID:
1844372
Alternate ID(s):
OSTI ID: 1874398
Journal Information:
Journal of Electron Spectroscopy and Related Phenomena, Vol. 246; ISSN 0368-2048
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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