Journal
NATURE COMMUNICATIONS
Volume 13, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-022-30036-w
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Funding
- National Science Foundation [DMR-1157490, DMR-1644779]
- State of Florida
- U.S. Department of Energy
- Powe Junior Faculty Enhancement Award
- William M. Fairbank Chair in Physics at Duke University
- US Department of Energy Basic Energy Sciences Award [DE-SC0014866]
- Swiss National Science Foundation
- European Research Council (ERC) under the European Union [677061, 101001604]
- U.S. Department of Energy (DOE) [DE-SC0014866] Funding Source: U.S. Department of Energy (DOE)
- European Research Council (ERC) [677061, 101001604] Funding Source: European Research Council (ERC)
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Researchers have discovered multiple magnetic supersolid phases and a magnetization plateau in the 2-dimensional layered oxide material SrCu2(BO3)(2) under extreme conditions of high pressure, high magnetic field, and low temperature. Calculations have revealed a 10 x 2 supersolid and a 1/5 plateau, which are descendants of the intermediate phase in SrCu2(BO3)(2).
The 2-dimensional layered oxide material SrCu2(BO3)(2), long studied as a realization of the Shastry-Sutherland spin topology, exhibits a range of intriguing physics as a function of both hydrostatic pressure and magnetic field, with a still debated intermediate plaquette phase appearing at approximately 20 kbar and a possible deconfined critical point at higher pressure. Here, we employ a tunnel diode oscillator (TDO) technique to probe the behavior in the combined extreme conditions of high pressure, high magnetic field, and low temperature. We reveal an extensive phase space consisting of multiple magnetic analogs of the elusive supersolid phase and a magnetization plateau. In particular, a 10 x 2 supersolid and a 1/5 plateau, identified by infinite Projected Entangled Pair States (iPEPS) calculations, are found to rely on the presence of both magnetic and non-magnetic particles in the sea of dimer singlets. These states are best understood as descendants of the full-plaquette phase, the leading candidate for the intermediate phase of SrCu2(BO3)(2). SrCu2(BO3)2 is a 2D quantum antiferromagnet on a particular frustrated lattice showing multiple magnetization plateaus and quantum phase transitions under high pressure. Here the authors uncover novel magnetic phases in this material under combined effects of extreme magnetic field and pressure.
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