Instability of Magnons in Two-dimensional Antiferromagnet at High Magnetic Fields

Details Instability of Magnons in Two-dimensional Antiferromagnet at High Magnetic Fields Instability of Magnons in Two-dimensional Antiferromagnet at High Magnetic Fields

2010-02-12

arxiv.org/abs/1002.2470v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pgase, 5 figuers, to be published in PRB RC

Scientific paper

Spin dynamics of the square lattice Heisenberg antiferromagnet, \BaMnGeO, is studied by a combination of bulk measurements, neutron diffraction, and inelastic neutron scattering techniques. Easy plane type antiferromagnetic order is identified at $T \le 4.0$ K. The exchange interactions are estimated as $J_1$ = 27.8(3)${\mu}$eV and $J_2$ = 1.0(1) ${\mu}$eV, and the saturation field $H_{\rm C}$ is 9.75 T. Magnetic excitation measurements with high experimental resolution setup by triple axis neutron spectrometer reveals the instability of one magnon excitation in the field range of $0.7H_{\rm C} \lesssim H \lesssim 0.85H_{\rm C}$.

Affiliated with

Also associated with

No associations

Rating

Instability of Magnons in Two-dimensional Antiferromagnet at High Magnetic Fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Instability of Magnons in Two-dimensional Antiferromagnet at High Magnetic Fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Instability of Magnons in Two-dimensional Antiferromagnet at High Magnetic Fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-419685