This title appears in the Scientific Report :
2018
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevLett.119.257204 in citations.
Please use the identifier: http://hdl.handle.net/2128/17497 in citations.
Orphan Spins in the S = 5 2 Antiferromagnet CaFe 2 O 4
Orphan Spins in the S = 5 2 Antiferromagnet CaFe 2 O 4
CaFe2O4 is an anisotropic S=52 antiferromagnet with two competing A (↑↑↓↓) and B (↑↓↑↓) magnetic order parameters separated by static antiphase boundaries at low temperatures. Neutron diffraction and bulk susceptibility measurements, show that the spins near these boundaries are weakly correlated an...
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Personal Name(s): | Stock, C. (Corresponding author) |
---|---|
Rodriguez, E. E. / Lee, N. / Demmel, F. / Fouquet, P. / Laver, M. / Niedermayer, Ch. / Su, Y. / Nemkovskiy, Kirill / Green, M. A. / Rodriguez-Rivera, J. A. / Kim, J. W. / Zhang, L. / Cheong, S.-W. | |
Contributing Institute: |
Mikrostrukturforschung; PGI-5 Streumethoden; JCNS-2 JCNS-FRM-II; JCNS-FRM-II |
Published in: | Physical review letters, 119 (2017) 25, S. 257204 |
Imprint: |
College Park, Md.
APS
2017
|
DOI: |
10.1103/PhysRevLett.119.257204 |
PubMed ID: |
29303328 |
Document Type: |
Journal Article |
Research Program: |
Jülich Centre for Neutron Research (JCNS) FRM II / MLZ |
Subject (ZB): | |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/17497 in citations.
CaFe2O4 is an anisotropic S=52 antiferromagnet with two competing A (↑↑↓↓) and B (↑↓↑↓) magnetic order parameters separated by static antiphase boundaries at low temperatures. Neutron diffraction and bulk susceptibility measurements, show that the spins near these boundaries are weakly correlated and a carry an uncompensated ferromagnetic moment that can be tuned with a magnetic field. Spectroscopic measurements find these spins are bound with excitation energies less than the bulk magnetic spin waves and resemble the spectra from isolated spin clusters. Localized bound orphaned spins separate the two competing magnetic order parameters in CaFe2O4. |