/ A. S. Sukhanov, S. E. Nikitin, M. S. Pavlovskii [et al.]> // Phys. Rev. Research. - 2020. -
Vol. 2,
Is. 4. - Ст. 043405,
DOI 10.1103/PhysRevResearch.2.043405. - Cited References: 57. - A.S.S. thanks D. A. Maksimov for fruitful discussions. I.V.M. thanks RSF 19-43-04129 for financial support in the frame of the joint DFG-RSF project, I.O.C. thanks the RFBR fund (grant 18-33-01282 [58]). D.S.I. acknowledges support from the German Research Foundation (DFG) under Grant No. IN 209/9-1, via the project C03 of the Collaborative Research Center SFB 1143 (project-id 247310070) at the TU Dresden and the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matterials — ct.qmat (EXC 2147, project-id 390858490). S.A. acknowledges DFG funding No. AS 523∖4-1. This work used phonon explorer software for data analysis. Work at the University of Colorado-Boulder was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Office of Science, under Contract No. DE-SC0006939
. - ISSN 2643-1564
Перевод заглавия: Динамика решетки в двухспиральном антиферромагнетике FeP
Аннотация: We present a comprehensive investigation of lattice dynamics in the double-helix antiferromagnet FeP by means of high-resolution time-of-flight neutron spectroscopy and ab initio calculations. Phonons can hybridize with the magnetic excitations in noncollinear magnets to significantly influence their properties. We observed a rich spectrum of phonon excitations, which extends up to ∼50 meV. We performed detailed analysis of the observed and calculated spectra for all high-symmetry points and high-symmetry directions of the Brillouin zone. We show that the DFT calculations quantitatively capture the essential features of the observed phonons, including both dispersions and scattering intensities. By making use of the detailed intensity comparison between the theory and the data, we were able to identify displacement vectors for the majority of the observed modes. The overall excellent agreement between the DFT predictions and the experimental results breaks down for the lowest mode at the Y point, whose energy is lower than calculated by ∼13%. The present study provides vital information on the lattice dynamics in FeP and demonstrates applicability of the DFT to novel pressure-induced phenomena in related materials, such as MnP and CrAs.
Смотреть статью,
WOS,
Для получение полного текста обратитесь в библиотеку
Держатели документа: Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
Institut für Festkörper- und Materialphysik, Technische Universität Dresden, D-01069 Dresden, Germany
Paul Scherrer Institute (PSI), CH-5232 Villigen, Switzerland
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Department of Physics, University of Colorado at Boulder, Boulder, Colorado 80309, USA
ISIS Facility, STFC, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11-0QX, United Kingdom
Leibniz Institute for Solid State and Materials Research Dresden, D-01069 Dresden, Germany
Lomonosov Moscow State University, 119991 Moscow, Russia
Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter — ct.qmat, TU Dresden, D-01069 Dresden, Germany
Доп.точки доступа: Sukhanov, A. S.; Nikitin, S. E.; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Sterling, T. C.; Andryushin, N. D.;
Андрюшин,
Никита Дмитриевич; Cameron, A. S.; Tymoshenko, Y. V.; Walker, H. C.; Morozov, I. V.; Chernyavskii, I. O.; Aswartham, S.; Reznik, D.; Inosov, D. S.