TY - JOUR
T1 - Spin-waves in antiferromagnetic single-crystal LiFeP O4
AU - Li, Jiying
AU - Garlea, Vasile O.
AU - Zarestky, Jerel L.
AU - Vaknin, David
PY - 2006
Y1 - 2006
N2 - Spin-wave dispersions in the antiferromagnetic state of single-crystal LiFeP O4 were determined by inelastic neutron scattering measurements. The dispersion curves measured from the (0,1,0) reflection along both a* and b* reciprocal-space directions reflect the anisotropic coupling of the layered Fe2+ (S=2) spin system. The spin-wave dispersion curves were theoretically modeled using linear spin-wave theory by including in the spin Hamiltonian in-plane nearest- and next-nearest-neighbor interactions (J1 and J2), inter-plane nearest-neighbor interactions (J) and a single-ion anisotropy (D). A weak (0,1,0) magnetic peak was observed in elastic neutron scattering studies of the same crystal indicating that the ground state of the staggered iron moments is not along the (0,1,0) direction, as previously reported from polycrystalline samples studies, but slightly rotated away from this axis.
AB - Spin-wave dispersions in the antiferromagnetic state of single-crystal LiFeP O4 were determined by inelastic neutron scattering measurements. The dispersion curves measured from the (0,1,0) reflection along both a* and b* reciprocal-space directions reflect the anisotropic coupling of the layered Fe2+ (S=2) spin system. The spin-wave dispersion curves were theoretically modeled using linear spin-wave theory by including in the spin Hamiltonian in-plane nearest- and next-nearest-neighbor interactions (J1 and J2), inter-plane nearest-neighbor interactions (J) and a single-ion anisotropy (D). A weak (0,1,0) magnetic peak was observed in elastic neutron scattering studies of the same crystal indicating that the ground state of the staggered iron moments is not along the (0,1,0) direction, as previously reported from polycrystalline samples studies, but slightly rotated away from this axis.
UR - http://www.scopus.com/inward/record.url?scp=33144476651&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.73.024410
DO - 10.1103/PhysRevB.73.024410
M3 - Article
AN - SCOPUS:33144476651
SN - 1098-0121
VL - 73
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 2
M1 - 024410
ER -