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Title: Spin-wave measurements on hexagonal MnTe of NiAs-type structure by inelastic neutron scattering

Abstract

MnTe with a hexagonal structure of NiAs type is an antiferromagnetic semiconductor below the Neel temperature T{sub N}=310 K. The spin-wave excitations of a MnTe single crystal have been measured at T=11 K by inelastic neutron scattering. The experimental spin-wave dispersions, obtained along five high-symmetry directions of the reciprocal space, have been modeled with a Heisenberg Hamiltonian including isotropic exchanges up to the third nearest neighbors and a planar magnetic anisotropy. This yielded the exchange integral values J{sub 1}=-21.5 K, J{sub 2}=0.67 K, and J{sub 3}=-2.87 K. These results are presented and compared to experimental values of relevant diluted magnetic semiconductors, allowing a discussion on a generic description of the distance dependence of the nearest-neighbor magnetic interactions.

Authors:
; ; ;  [1]
  1. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw (Poland)
Publication Date:
OSTI Identifier:
20787994
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 73; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevB.73.104403; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; DISTANCE; EXCITATION; HAMILTONIANS; HEISENBERG MODEL; INELASTIC SCATTERING; MAGNETIC SEMICONDUCTORS; MANGANESE TELLURIDES; MONOCRYSTALS; NEEL TEMPERATURE; NEUTRON DIFFRACTION; SPIN WAVES; SYMMETRY

Citation Formats

Szuszkiewicz, W, Dynowska, E, Witkowska, B, Hennion, B, and Laboratoire Leon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif-sur-Yvette cedex. Spin-wave measurements on hexagonal MnTe of NiAs-type structure by inelastic neutron scattering. United States: N. p., 2006. Web. doi:10.1103/PHYSREVB.73.1.
Szuszkiewicz, W, Dynowska, E, Witkowska, B, Hennion, B, & Laboratoire Leon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif-sur-Yvette cedex. Spin-wave measurements on hexagonal MnTe of NiAs-type structure by inelastic neutron scattering. United States. https://doi.org/10.1103/PHYSREVB.73.1
Szuszkiewicz, W, Dynowska, E, Witkowska, B, Hennion, B, and Laboratoire Leon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif-sur-Yvette cedex. Wed . "Spin-wave measurements on hexagonal MnTe of NiAs-type structure by inelastic neutron scattering". United States. https://doi.org/10.1103/PHYSREVB.73.1.
@article{osti_20787994,
title = {Spin-wave measurements on hexagonal MnTe of NiAs-type structure by inelastic neutron scattering},
author = {Szuszkiewicz, W and Dynowska, E and Witkowska, B and Hennion, B and Laboratoire Leon Brillouin, CEA-CNRS, CE Saclay, 91191 Gif-sur-Yvette cedex},
abstractNote = {MnTe with a hexagonal structure of NiAs type is an antiferromagnetic semiconductor below the Neel temperature T{sub N}=310 K. The spin-wave excitations of a MnTe single crystal have been measured at T=11 K by inelastic neutron scattering. The experimental spin-wave dispersions, obtained along five high-symmetry directions of the reciprocal space, have been modeled with a Heisenberg Hamiltonian including isotropic exchanges up to the third nearest neighbors and a planar magnetic anisotropy. This yielded the exchange integral values J{sub 1}=-21.5 K, J{sub 2}=0.67 K, and J{sub 3}=-2.87 K. These results are presented and compared to experimental values of relevant diluted magnetic semiconductors, allowing a discussion on a generic description of the distance dependence of the nearest-neighbor magnetic interactions.},
doi = {10.1103/PHYSREVB.73.1},
url = {https://www.osti.gov/biblio/20787994}, journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 10,
volume = 73,
place = {United States},
year = {2006},
month = {3}
}