Abstract
Magnetic correlation in YBaCo4O7 with kagome and triangular lattices was studied through inelastic-neutron-scattering measurements on a single crystal sample. The broad magnetic excitation was observed below 45 meV and showed dispersions both within the c plane and along the c axis. The wave vector with the minimum energy of the magnetic excitation was totally different from the magnetic Bragg point. Our analysis with the first-moment-sum rule suggests that Co ions in YBaCo4O7 form a unique three-dimensional network with the geometrically frustration.
| Original language | English |
|---|---|
| Article number | 214444 |
| Journal | Physical Review B |
| Volume | 101 |
| Issue number | 21 |
| DOIs | |
| State | Published - Jun 1 2020 |
| Externally published | Yes |
Funding
The neutron experiment at the Materials and Life Science Experimental Facility of J-PARC was performed under the user program (Proposal No. 2014A0192). Travel expense for the neutron experiment on CNCS was supported by a General User Program for Neutron Scattering Experiments, Institute for Solid State Physics, The University of Tokyo (Proposal No. 13531 and No. 13569). The research at ORNL's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. This work was supported by KAKENHI (24740224 and 15K05123).
| Funders | Funder number |
|---|---|
| Scientific User Facilities Division | |
| U.S. Department of Energy | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory | |
| Japan Society for the Promotion of Science | 15K05123, 24740224 |
| University of Tokyo | 13531, 13569 |