Magnetic field-induced intermediate quantum spin liquid with a spinon Fermi surface

Finally, our results therefore point to the existence of a quantum spin liquid state with a spinon Fermi surface in YbMgGaO 4, which has a perfect spin-1/2 triangular lattice as in the original proposal of quantum spin liquids.

Quantum impurity models for magnetic adsorbates on superconductor surfaces. Field-Induced Instability of a gapless spin liquid with a Spinon Fermi Surface.. Inter-dot capacitive coupling is also considered: it may lead to cross-over at half- filling. Correlated Kondo systems in the large Fermi surface regime with Neel.

A spin excitation continuum across a large region of the Brillouin zone that persists at near-zero temperatures provides evidence for a quantum spin liquid state with a spinon Fermi surface in.

A quantum spin liquid (QSL) is an exotic state of matter in condensed-matter systems, where the electron spins are strongly correlated, but conventional magnetic orders are suppressed down to zero.

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3 Department of Quantum Matter, Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8530, Japan..

The ground state of the quantum kagome antiferromagnet zn-brochantite, ZnCu3OH6 SO4, which is one of only a few known spin-liquid (SL) realizations in two or three dimensions, has been described as a gapless SL with a spinon Fermi surface. Employing nuclear magnetic resonance in a broad magnetic-field

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The Kitaev model with anisotropic interactions on the bonds of a honeycomb lattice is a paradigmatic model for a quantum spin liquid. We explore the effects of a magnetic field and discover an intermediate gapless spin liquid sandwiched between the known gapped kitaev spin liquid and a polarized phase.

Recent Highlights: ‘ Magnetic field-induced intermediate quantum spin liquid with a spinon Fermi surface ‘, N. D. Patel, N. Trivedi, Proceedings of the National Academy of Sciences, 201821406 (2019) – .

Elementary excitations in entangled states such as quantum spin liquids may. model cannot display this effect in an intermediate magnetic field. Here we present a microscopic theory of the Kitaev.

The term ‘quantum spin liquid’. form a ‘composite Fermi liquid’ state with a Fermi surface, despite a very strong magnetic field which would destroy the plane-wave states of bare electrons. The theory of the HLR state has strong formal similarities with that of the spinon Fermi surface, and.

1 RIKEN Center for Emergent Matter Science, Wako 351-0198, Japan. 2 Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen, Switzerland. 3 Institut Laue-Langevin, 71.