Singlet ground state of the quantum antiferromagnet Ba&lt;sub&gt;3&lt;/sub&gt;CuSb&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;9&lt;/sub&gt;

Quilliam, J.A.; Bert, F.; Kermarrec, E.; Payen, C.; Guillot-Deudon, C.; Bonville, P.; Baines, C.; Luetkens, H.; Mendels, P.

doi:10.1103/PhysRevLett.109.117203

Singlet ground state of the quantum antiferromagnet Ba₃CuSb₂O₉

Quilliam JA, Bert F, Kermarrec E, Payen C, Guillot-Deudon C, Bonville P, Baines C, Luetkens H & Mendels P

Citation

Quilliam, J. A., Bert, F., Kermarrec, E., Payen, C., Guillot-Deudon, C., Bonville, P., … Mendels, P. (2012). Singlet ground state of the quantum antiferromagnet Ba₃CuSb₂O₉. Physical Review Letters, 109(11), 117203 (5 pp.). https://doi.org/10.1103/PhysRevLett.109.117203

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:12576

We present local probe results on the honeycomb lattice antiferromagnet Ba₃CuSb₂O₉. Muon spin relaxation measurements in a zero field down to 20 mK show unequivocally that there is a total absence of spin freezing in the ground state. Sb NMR measurements allow us to track the intrinsic susceptibility of the lattice, which shows a maximum at around 55 K and drops to zero in the low-temperature limit. The spin-lattice relaxation rate shows two characteristic energy scales, including a field-dependent crossover to exponential low-temperature behavior, implying gapped magnetic excitations.

Details

Publication Type

Journal Article

Title

Singlet ground state of the quantum antiferromagnet Ba₃CuSb₂O₉

Author(s)

Quilliam, J.A.

Bert, F.

Kermarrec, E.

Payen, C.

Guillot-Deudon, C.

Bonville, P.