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

Published

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • Haravifard, S; Graf, D; Feiguin, AE; Batista, CD; Lang, JC; Silevitch, DM; Srajer, G; Gaulin, BD; Dabkowska, HA; Rosenbaum, TF

Published Date

  • June 20, 2016

Published In

Volume / Issue

  • 7 /

Start / End Page

  • 11956 -

PubMed ID

  • 27320787

Pubmed Central ID

  • 27320787

Electronic International Standard Serial Number (EISSN)

  • 2041-1723

International Standard Serial Number (ISSN)

  • 2041-1723

Digital Object Identifier (DOI)

  • 10.1038/ncomms11956

Language

  • eng