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- W2912491730 abstract "We investigate the spin $S=1/2$ Heisenberg model on the body centered cubic lattice in the presence of ferromagnetic and antiferromagnetic nearest-neighbor $J_{1}$, second-neighbor $J_{2}$, and third-neighbor $J_{3}$ exchange interactions. The classical ground state phase diagram obtained by a Luttinger-Tisza analysis is shown to host six different (noncollinear) helimagnetic orders in addition to ferromagnetic, N'eel, stripe and planar antiferromagnetic orders. Employing the pseudofermion functional renormalization group (PFFRG) method for quantum spins ($S=1/2$) we find an extended nonmagnetic region, and significant shifts to the classical phase boundaries and helimagnetic pitch vectors caused by quantum fluctuations while no new long-range dipolar magnetic orders are stabilized. The nonmagnetic phase is found to disappear for $S=1$. We calculate the magnetic ordering temperatures from PFFRG and quantum Monte Carlo methods, and make comparisons to available data" @default.
- W2912491730 created "2019-02-21" @default.
- W2912491730 creator A5022300091 @default.
- W2912491730 creator A5031162038 @default.
- W2912491730 creator A5035316484 @default.
- W2912491730 creator A5035768262 @default.
- W2912491730 creator A5062435126 @default.
- W2912491730 creator A5072782132 @default.
- W2912491730 creator A5077044934 @default.
- W2912491730 creator A5085385194 @default.
- W2912491730 date "2019-07-16" @default.
- W2912491730 modified "2023-10-16" @default.
- W2912491730 title "Quantum paramagnetism and helimagnetic orders in the Heisenberg model on the body centered cubic lattice" @default.
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