Excitations in the plaquette phase of the Shastry-Sutherland compound, SrCu2(BO3)2
We propose a 7 day inelastic neutron scattering experiment on ThALES to determine the excitation spectrum in the plaquette phase of the Shastry-Sutherland compound, SrCu2(BO3)2. The Shastry-Sutherland lattice consists of spin pairs (dimers) embedded in a square lattice with inter-dimer coupling, J, and intra-dimer coupling, J'. It has an exact dimer product ground state for low J'/J. Upon increasing the ratio, J'/J, the system enters a plaquette singlet phase and finally the Néel state. SrCu2(BO3)2 is unique since it is topologically equivalent to the Shastry-Sutherland lattice and with the possibility to tune J'/J by applying pressure. Therefore, SCBO presents an amazing experimental playground for theoretical predictions. One such prediction is the existence of what is known as the square or void plaquette phase. Previous experimental evidence contradicts this prediction but the conclusions are far from rock solid with only limited data. With the proposed experiment we aim to determine the excitation spectrum in the plaquette phase and thereby understand the nature of this phase.
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The recommended format for citing this dataset in a research publication is in the following format:
FOGH Ellen; BOEHM Martin; R. Gaal; HIESS Arno; PISANI Federico; Henrik M. Ronnow; STEFFENS Paul and ZAYED Mohamed. (2023). Excitations in the plaquette phase of the Shastry-Sutherland compound, SrCu2(BO3)2. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-873
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This data is not yet public
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