Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Singlet-Triplet Dispersion Reveals Additional Frustration in the Triangular-Lattice Dimer Compound Ba 3 Mn 2 O 8

Published

Author(s)

M. B. Stone, M. D. Lumsden, Sung Chang, E. C. Samulon, C. D. Batista, I. R. Fisher

Abstract

We present single crystal inelastic neutron scattering measurements of the S=1 dimerized quasi-two-dimensional antiferromagnet Ba3Mn2O8. The singlet-triplet dispersion reveals nearest-neighbor and next-nearest-neighbor ferromagnetic interactions between adjacent bilayers that compete against each other. Although the interbilayer exchange is comparable to the intrabilayer exchange, this additional frustration reduces the effective coupling along the c axis and leads to a quasi-two-dimensional behavior. In addition, the obtained exchange values are able to reproduce the four critical fields in the phase diagram.
Citation
Physical Review Letters
Volume
100
Issue
23

Keywords

frustration, low dimensional magnetism, quantum critical point

Citation

Stone, M. , Lumsden, M. , Chang, S. , Samulon, E. , Batista, C. and Fisher, I. (2008), Singlet-Triplet Dispersion Reveals Additional Frustration in the Triangular-Lattice Dimer Compound Ba 3 Mn 2 O 8, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.100.237201, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=610056 (Accessed April 15, 2024)
Created June 13, 2008, Updated March 18, 2024