Journal article
Direct evidence for anisotropic three-dimensional magnetic excitations in a hole-doped antiferromagnet
Physical review. B, v 102(16), p1
15 Oct 2020
Abstract
We report a neutron-scattering study on Pr2-xSrxNiO4 (x approximate to( )0.5) with magnetic incommensurability epsilon = 0.461 at 10 K, showing direct evidence for out-of-plane magnetic excitations caused by a non-negligible interlayer spin coupling (J(perpendicular to)). The magnetic spectrum is fully represented by linear spin wave theory considering an unconventional body-centered-like stacking of discommensurated spin stripes. A large easy-plane-type single-ion anisotropy (approximate to 1.5 meV) has been found to be responsible for a finite-energy (approximate to 13 meV) Goldstone mode at the magnetic zone center. Our results validate the presence of a sizable out-of-plane interaction resulting in an anisotropic three-dimensional nature of spin dynamics in Pr2-xSrxNiO4 near the half-doped region.
Metrics
Details
- Title
- Direct evidence for anisotropic three-dimensional magnetic excitations in a hole-doped antiferromagnet
- Creators
- Rajesh Dutta - Heinz Maier-Leibnitz ZentrumAvishek Maity - University of GöttingenAnna Marsicano - Institut Charles Gerhardt MontpellierJ. Ross Stewart - Rutherford Appleton LaboratoryMatthias Opel - Bavarian Academy of Sciences and HumanitiesWerner Paulus - Institut Charles Gerhardt Montpellier
- Publication Details
- Physical review. B, v 102(16), p1
- Publisher
- Amer Physical Soc
- Number of pages
- 5
- Grant note
- Institut fur Kristallographie, RWTH Aachen Universitat Technische Universitat Munchen
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000577210000002
- Scopus ID
- 2-s2.0-85094622637
- Other Identifier
- 991022004762504721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter