Title: The prominent role of oxygen in the multiferroicity of DyMnO3 and TbMnO3: a resonant soft x-ray scattering spectroscopy study

Abstract

Oxygen is known to play an important role in the multiferroicity of rare earth manganites; however, how this role changes with rare earth elements is still not fully understood. To address this question, we have used resonant soft x-ray scattering spectroscopy to study the F-type (0,τ,0) diffraction peak from the antiferromagnetic order in ${\mathrm{DyMnO}}_3$ and ${\mathrm{TbMnO}}_3$. We focus on the measurements at O K edge of these two manganites, supplemented by the results at Mn L2 and Dy M5 edge of ${\mathrm{DyMnO}}_3$. We show that the electronic states of different elements are coupled more strongly in ${\mathrm{DyMnO}}_3$ than in ${\mathrm{TbMnO}}_3$, presumably due to the stronger lattice distortion and the tendency to develop E-type antiferromagnetism in the ferroelectric state that promote the orbital hybridization. We also show that the anomaly in the correlation length of (0,τ,0) peak in ${\mathrm{DyMnO}}_3$ signifies the exchange interaction between Mn and rare earth spins. Our findings reveal the prominent role of oxygen orbitals in the multiferroicity of rare earth manganites and the distinct energetics between them.

Authors:

Lee, J. M. ^[1]; Jeng, H. -T. ^[2]; Shao, Y. ^[3]; Wray, L. A. ^[4]; Chen, J. M. ^[1]; Qiao, R. ^[5]; Yang, W. L. ^[5]; Cao, Y. ^[6]; Lin, J. -Y. ^[7]; Schoenlein, R. W. ^[8]; Chuang, Y. -D. ^[5]

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+ Show Author Affiliations

1. National Synchotron Radiation Research Center, Hsinchu (Taiwan)
2. National Tsing Hua Univ., Hsinchu (Taiwan); Academia Sinica, Taipei (Taiwan)
3. Tamkang Univ., Taipei (Taiwan)
4. New York Univ. (NYU), NY (United States)
5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
6. Brookhaven National Lab. (BNL), Upton, NY (United States)
7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS); National Chiao Tung Univ., Hsinchu (Taiwan)
8. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Linac Coherent Light Source (LCLS)

Publication Date:

Thu Jul 21 00:00:00 EDT 2016

Research Org.:

Brookhaven National Lab. (BNL), Upton, NY (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

1303015

Alternate Identifier(s):

OSTI ID: 1267541; OSTI ID: 1456953

Report Number(s):

BNL-112490-2016-JA
Journal ID: ISSN 2469-9950; R&D Project: PO011; KC0201060

Grant/Contract Number:  

SC00112704; AC02-05CH11231

Resource Type:

Journal Article: Accepted Manuscript

Journal Name:

Physical Review B

Additional Journal Information:

Journal Volume: 94; Journal Issue: 3; Journal ID: ISSN 2469-9950

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY