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Crystallization of spin superlattices with pressure and field in the layered magnet SrCu₂(BO₃)₂

Haravifard, S. and Graf, D. and Feiguin, A. E. and Batista, C. D. and Lang, J. C. and Silevitch, D. M. and Srajer, G. and Gaulin, B. D. and Dabkowska, H. A. and Rosenbaum, T. F. (2016) Crystallization of spin superlattices with pressure and field in the layered magnet SrCu₂(BO₃)₂. Nature Communications, 7 . Art. No. 11956. ISSN 2041-1723. PMCID PMC4915149. doi:10.1038/ncomms11956.

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An exact mapping between quantum spins and boson gases provides fresh approaches to the creation of quantum condensates and crystals. Here we report on magnetization measurements on the dimerized quantum magnet SrCu₂(BO₃)₂ at cryogenic temperatures and through a quantum-phase transition that demonstrate the emergence of fractionally filled bosonic crystals in mesoscopic patterns, specified by a sequence of magnetization plateaus. We apply tens of Teslas of magnetic field to tune the density of bosons and gigapascals of hydrostatic pressure to regulate the underlying interactions. Simulations help parse the balance between energy and geometry in the emergent spin superlattices. The magnetic crystallites are the end result of a progression from a direct product of singlet states in each short dimer at zero field to preferred filling fractions of spin-triplet bosons in each dimer at large magnetic field, enriching the known possibilities for collective states in both quantum spin and atomic systems.

Item Type:Article
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URLURL TypeDescription CentralArticle
Haravifard, S.0000-0003-1852-5190
Feiguin, A. E.0000-0001-5509-2561
Silevitch, D. M.0000-0002-6347-3513
Dabkowska, H. A.0000-0002-1680-8739
Additional Information:© 2016 Macmillan Publishers Limited, part of Springer Nature. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit Received 17 June 2015. Accepted 16 May 2016. Published 20 June 2016. We are grateful to S.W. Tozer for help in acquiring the high-pressure TDO data. The work at the University of Chicago was supported by NSF grant no. DMR-1206519. This research used resources of the Advanced Photon Source, a U.S. Department of Energy Office of Science User Facility operated by Argonne National Laboratory under contract no. NEAC02-06CH11357. The work at the National High Magnetic Field Laboratory was supported by National Science Foundation Cooperative Agreement no. DMR-1157490, the State of Florida, and the U.S. Department of Energy. D.G. acknowledges support from the Department of Energy (DOE) NNSA DE-NA0001979. A.E.F. acknowledges support from NSF under grant DMR-1339564.
Funding AgencyGrant Number
Department of Energy (DOE)NEAC02-06CH11357
State of FloridaUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
Department of Energy (DOE)DE-NA0001979
PubMed Central ID:PMC4915149
Record Number:CaltechAUTHORS:20160627-133636332
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Official Citation:Haravifard, S. et al. Crystallization of spin superlattices with pressure and field in the layered magnet SrCu2(BO3)2. Nat. Commun. 7:11956 doi: 10.1038/ncomms11956 (2016).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68692
Deposited On:27 Jun 2016 20:54
Last Modified:26 Apr 2022 18:14

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