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Effects of two-loop contributions in the pseudofermion functional renormalization group method for quantum spin systems
Marlon Rueck, Johannes Reuther
We implement an extension of the pseudofermion functional renormalization group (PFFRG) method for quantum spin systems that takes into account two-loop diagrammatic contributions.…
Evidence for a three-dimensional quantum spin liquid in PbCuTeO
S. Chillal, Y. Iqbal, H. O. Jeschke +9
The quantum spin liquid (QSL) is a highly entangled magnetic state characterized by the absence of static magnetism in its ground state. Instead, the spins fluctuate in a highly co…
Topological spinon bands and vison excitations in spin-orbit coupled quantum spin liquids
Jonas Sonnenschein, Johannes Reuther
Spin liquids are exotic quantum states characterized by the existence of fractional and deconfined quasiparticle excitations, referred to as spinons and visons. Their fractional na…
Quantum spin liquids in frustrated spin-1 diamond antiferromagnets
Finn Lasse Buessen, Max Hering, Johannes Reuther +1
Motivated by the recent synthesis of the spin-1 A-site spinel NiRhO, we investigate the classical to quantum crossover of a frustrated - Heisenber…
Signatures of a gearwheel quantum spin liquid in a spin- pyrochlore molybdate Heisenberg antiferromagnet
Yasir Iqbal, Tobias Müller, Kira Riedl +6
We theoretically investigate the low-temperature phase of the recently synthesized LuMoON material, an extraordinarily rare realization of a three-dimension…
Three-band Hubbard model for NaIrO: Topological insulator, zigzag antiferromagnet, and Kitaev-Heisenberg material
Manuel Laubach, Johannes Reuther, Ronny Thomale +1
NaIrO was one of the first materials proposed to feature the Kane-Mele type topological insulator phase. Contemporaneously it was claimed that the very same material is in…