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- W4226151571 abstract "The ground state (gs) of antiferromagnetically coupled dimers on the Shastry-Sutherland lattice (SSL) stabilizes many exotic phases and has been extensively studied. The gs properties of ferromagnetically coupled dimers on SSL are equally important but unexplored. In this model the exchange coupling along the $x$-axis ($J_x$) and $y$-axis ($J_y$) are ferromagnetic and the diagonal exchange coupling ($J$) is antiferromagnetic. In this work we explore the quantum phase diagram of ferromagnetically coupled dimer model numerically using density matrix renormalization group (DMRG) method. We note that in $J_x$-$J_y$ parameter space this model exhibits six interesting phases:(I) stripe $(0,pi)$, (II) stripe $(pi,0)$, (III) perfect dimer, (IV) $X$-spiral, (V) $Y$-spiral and (VI) ferromagnetic phase. Phase boundaries of these quantum phases are determined using the correlation functions and gs energies. We also notice the correlation length in this system is less than four lattice units in most of the parameter regimes. The non-collinear behaviour in $X$-spiral and $Y$-spiral phase and the dependence of pitch angles on model parameters are also studied." @default.
- W4226151571 created "2022-05-05" @default.
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- W4226151571 date "2021-12-06" @default.
- W4226151571 modified "2023-09-29" @default.
- W4226151571 title "Quantum phases of ferromagnetically coupled dimers on Shastry-Sutherland lattice" @default.
- W4226151571 hasPublicationYear "2021" @default.
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