Back to Search
Start Over
Spinon continuum in the Heisenberg quantum chain compound Sr$_2$V$_3$O$_9$
- Source :
- Phys. Rev. B 109, L020402 (2024)
- Publication Year :
- 2023
-
Abstract
- Magnetic excitations in the spin chain candidate Sr$_2$V$_3$O$_9$ have been investigated by inelastic neutron scattering on a single crystal sample. A spinon continuum with a bandwidth of $\sim22$ meV is observed along the chain formed by alternating magnetic V$^{4+}$ and nonmagnetic V$^{5+}$ ions. Incipient magnetic Bragg peaks due to weak ferromagnetic interchain couplings emerge when approaching the magnetic transition at $T_N\sim 5.3$ K while the excitations remain gapless within the instrumental resolution. Comparisons to the Bethe ansatz, density matrix renormalization group (DMRG) calculations, and effective field theories confirm Sr$_2$V$_3$O$_9$ as a host of weakly coupled $S = 1/2$ chains dominated by antiferromagnetic intrachain interactions of $\sim7.1$(1) meV.<br />Comment: 19 pages, 9 figures
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 109, L020402 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2307.12093
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.109.L020402