Search Results - "Niggemann, Nils"

Quantitative functional renormalization for three-dimensional quantum Heisenberg models by Niggemann, Nils, Reuther, Johannes, Sbierski, Björn

“…We employ a recently developed variant of the functional renormalization group method for spin systems, the so-called pseudo Majorana functional…”
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Pinch-points to half-moons and up in the stars: The kagome skymap by Kiese, Dominik, Ferrari, Francesco, Astrakhantsev, Nikita, Niggemann, Nils, Ghosh, Pratyay, Müller, Tobias, Thomale, Ronny, Neupert, Titus, Reuther, Johannes, Gingras, Michel J. P., Trebst, Simon, Iqbal, Yasir

“…Pinch point singularities, associated with flat band magnetic excitations, are tell-tale signatures of Coulomb spin liquids. While their properties in the…”
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Quantum Effects on Unconventional Pinch Point Singularities by Niggemann, Nils, Iqbal, Yasir, Reuther, Johannes

“…Fracton phases are a particularly exotic type of quantum spin liquids where the elementary quasiparticles are intrinsically immobile. These phases may be…”
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Phase diagram of the antiferromagnetic $J_1$-$J_2$ spin-$1$ pyrochlore Heisenberg model by Hagymási, Imre, Niggemann, Nils, Reuther, Johannes

“…We study the phase diagram of the antiferromagnetic $J_1$-$J_2$ Heisenberg model on the pyrochlore lattice with $S=1$ spins at zero and finite temperatures. We…”
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Quantum effects on unconventional pinch point singularities by Niggemann, Nils, Iqbal, Yasir, Reuther, Johannes

“…Phys. Rev. Lett. 130, 196601 (2023) Fracton phases are a particularly exotic type of quantum spin liquids where the elementary quasiparticles are intrinsically…”
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Quantitative functional renormalization for three-dimensional quantum Heisenberg models by Niggemann, Nils, Reuther, Johannes, Sbierski, Björn

“…SciPost Phys. 12, 156 (2022) We employ a recently developed variant of the functional renormalization group method for spin systems, the so-called pseudo…”
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Frustrated Quantum Spins at finite Temperature: Pseudo-Majorana functional RG approach by Niggemann, Nils, Sbierski, Björn, Reuther, Johannes

“…Phys. Rev. B 103, 104431 (2021) The pseudofermion functional renormalization group (PFFRG) method has proven to be a powerful numerical approach to treat…”
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Pseudo-fermion functional renormalization group for spin models by Müller, Tobias, Kiese, Dominik, Niggemann, Nils, Sbierski, Björn, Reuther, Johannes, Trebst, Simon, Thomale, Ronny, Iqbal, Yasir

“…Rep. Prog. Phys. 87, 036501 (2024) For decades, frustrated quantum magnets have been a seed for scientific progress and innovation in condensed matter. As much…”
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Temperature flow in pseudo-Majorana functional renormalization for quantum spins by Schneider, Benedikt, Reuther, Johannes, Gonzalez, Matías G, Sbierski, Björn, Niggemann, Nils

“…We implement the temperature flow scheme first proposed by Honerkamp and Salmhofer in Phys.~Rev.~B 64, 184516 (2001) into the pseudo-Majorana functional…”
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Classical spiral spin liquids as a possible route to quantum spin liquids by Niggemann, Nils, Hering, Max, Reuther, Johannes

“…Quantum spin liquids are long-range entangled phases whose magnetic correlations are determined by strong quantum fluctuations. While an overarching principle…”
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require{mhchem}$Quantum paramagnetism in the decorated square-kagome antiferromagnet $\ce{Na6Cu7BiO4(PO4)4Cl3} by Niggemann, Nils, Astrakhantsev, Nikita, Ralko, Arnaud, Ferrari, Francesco, Maity, Atanu, Müller, Tobias, Richter, Johannes, Thomale, Ronny, Neupert, Titus, Reuther, Johannes, Iqbal, Yasir, Jeschke, Harald O

“…Phys. Rev. B 108, L241117 (2023) $\require{mhchem}$The square-kagome lattice Heisenberg antiferromagnet is a highly frustrated Hamiltonian whose material…”
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Pinwheel valence-bond-crystal ground state of the spin-$\frac{1}{2}$ Heisenberg antiferromagnet on the $shuriken$ lattice by Astrakhantsev, Nikita, Ferrari, Francesco, Niggemann, Nils, Müller, Tobias, Chauhan, Aishwarya, Kshetrimayum, Augustine, Ghosh, Pratyay, Regnault, Nicolas, Thomale, Ronny, Reuther, Johannes, Neupert, Titus, Iqbal, Yasir

“…Phys. Rev. B 104, L220408 (2021) We investigate the nature of the ground-state of the spin-$\frac{1}{2}$ Heisenberg antiferromagnet on the $shuriken$ lattice…”
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Pinch-points to half-moons and up in the stars: the kagome skymap by Kiese, Dominik, Ferrari, Francesco, Astrakhantsev, Nikita, Niggemann, Nils, Ghosh, Pratyay, Müller, Tobias, Thomale, Ronny, Neupert, Titus, Reuther, Johannes, Gingras, Michel J. P, Trebst, Simon, Iqbal, Yasir

“…Phys. Rev. Research 5, L012025 (2023) Pinch point singularities, associated with flat band magnetic excitations, are tell-tale signatures of Coulomb spin…”
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