TY  - JOUR
A1  - Mukharjee, Prashanta K.
A1  - Shen, Bin
A1  - Erdmann, Sebastian
A1  - Jesche, Anton
A1  - Kaiser, Julian
A1  - Baral, Priya R.
A1  - Zaharko, Oksana
A1  - Gegenwart, Philipp
A1  - Tsirlin, Alexander A.
T1  - Intermediate field-induced phase of the honeycomb magnet BaCo2⁢(AsO4)2
T2  - Physical Review B
N2  - We use magnetometry, calorimetry, and high-resolution capacitive dilatometry, as well as single-crystal neutron diffraction to explore the temperature-field phase diagram of the anisotropic honeycomb magnet BaCo2⁢(AsO4)2. Our data reveal four distinct ordered states observed for in-plane magnetic fields. Of particular interest is the narrow region between 0.51 and 0.54 T that separates the up-up-down order from the fully polarized state and coincides with the field range where signatures of the spin-liquid behavior have been reported. We show that magnetic Bragg peaks persist in this intermediate phase, thus ruling out its spin-liquid nature. However, the simultaneous nonmonotonic evolution of nuclear Bragg peaks suggests the involvement of the lattice, witnessed also in other regions of the phase diagram where large changes in the sample length are observed upon entering the magnetically ordered states. Our data highlight the importance of lattice effects in BaCo2⁢(AsO4)2.
Y1  - 2024
UR  - https://opus.bibliothek.uni-augsburg.de/opus4/frontdoor/index/index/docId/116243
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:384-opus4-1162438
SN  - 2469-9950
SN  - 2469-9969
VL  - 110
IS  - 14
SP  - L140407
PB  - American Physical Society (APS)
ER  -