| Title: |
Field induced bound state condensation and spin nematic phase in SrCu2 BO3 2 revealed by neutron scattering up to 25.9 T |
| Authors: |
Fogh, E.; Nayak, M.; Prokhnenko, O.; Bartkowiak, M.; Munakata, K.; Soh, J.R.; Turrini, A.A.; Zayed, M.E.; Pomjakushina, E.; Kageyama, H.; Nojiri, H.; Kakurai, K.; Normand, B.; Mila, F.; R nnow, H.M. |
| Source: |
Nature Communications 15 2024 , p. 442 1 10 |
| Publication Year: |
2024 |
| Collection: |
Helmholtz Zentrum Berlin (HZB): Publications |
| Subject Terms: |
Bose Einstein Condensation; magnetization plateaus; magnons; order; heat; model |
| Description: |
In quantum magnetic materials, ordered phases induced by an applied magnetic field can be described as the Bose Einstein condensation BEC of magnon excitations. In the strongly frustrated system SrCu2 BO3 2, no clear magnon BEC could be observed, pointing to an alternative mechanism, but the high fields required to probe this physics have remained a barrier to detailed investigation. Here we exploit the first purpose built high field neutron scattering facility to measure the spin excitations of SrCu2 BO3 2 up to 25.9 T and use cylinder matrix product states MPS calculations to reproduce the experimental spectra with high accuracy. Multiple unconventional features point to a condensation of S amp; 8201; amp; 8201;2 bound states into a spin nematic phase, including the gradients of the one magnon branches and the persistence of a one magnon spin gap. This gap reflects a direct analogy with superconductivity, suggesting that the spin nematic phase in SrCu2 BO3 2 is best understood as a condensate of bosonic Cooper pairs |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
info:eu-repo/grantAgreement/EU/H2020/810451 |
| Availability: |
https://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=111247 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.A7447BB6 |
| Database: |
BASE |