196 citations · 2.6k across the 56 of their papers we have counts for
12 papers · 1 filter
Field-induced intermediate ordered phase and anisotropic interlayer interactions in -RuCl
Christian Balz, Lukas Janssen, Paula Lampen-Kelley +6
In -RuCl, an external magnetic field applied within the honeycomb plane can induce a transition from a magnetically ordered state to a disordered state that is potentially r…
High-field thermal transport properties of the Kitaev quantum magnet alpha-RuCl3: evidence for low-energy excitations beyond the critical field
Richard Hentrich, Xiaochen Hong, Matthias Gillig +11
We investigate the phononic in-plane longitudinal low-temperature thermal conductivity kappa_ab of the Kitaev quantum magnet alpha-RuCl3 for large in-plane magnetic fields up to 33…
Flux crystals, Majorana metals, and flat bands in exactly solvable spin-orbital liquids
Sreejith Chulliparambil, Lukas Janssen, Matthias Vojta +2
Spin-orbital liquids are quantum disordered states in systems with entangled spin and orbital degrees of freedom. We study exactly solvable spin-orbital models in two dimensions wi…
Fractionalized fermionic quantum criticality in spin-orbital Mott insulators
Urban F. P. Seifert, Xiao-Yu Dong, Sreejith Chulliparambil +3
We study transitions between topological phases featuring emergent fractionalized excitations in two-dimensional models for Mott insulators with spin and orbital degrees of freedom…
Susceptibility anisotropy and its disorder evolution in models for Kitaev materials
Eric C. Andrade, Lukas Janssen, Matthias Vojta
Mott insulators with strong spin-orbit coupling display a strongly anisotropic response to applied magnetic fields. This applies in particular to Kitaev materials, with -RuCl$_3…
Heisenberg-Kitaev model in a magnetic field: expansion
Pedro M. Cônsoli, Lukas Janssen, Matthias Vojta +1
The exact solution of Kitaev's spin- honeycomb spin-liquid model has sparked an intense search for Mott insulators hosting bond-dependent Kitaev interactions, of which $\mathr…
Observation of a random singlet state in a diluted Kitaev honeycomb material
Seung-Ho Baek, Hyeon Woo Yeo, Seung-Hwan Do +4
We report a Cl nuclear magnetic resonance (NMR) study of the diluted Kitaev material -RuIrCl ( and ) where non-magnetic Ir dopants subs…
Microscopic models for Kitaev's sixteenfold way of anyon theories
Sreejith Chulliparambil, Urban F. P. Seifert, Matthias Vojta +2
In two dimensions, the topological order described by gauge theory coupled to free or weakly interacting fermions with a nonzero spectral Chern number is classif…
Field-induced phase transitions of the Kitaev material -RuCl probed by thermal expansion and magnetostriction
S. Gass, P. M. Cônsoli, V. Kocsis +8
High-resolution thermal expansion and magnetostriction measurements were performed on single crystals of -RuCl in magnetic fields applied parallel to the Ru-Ru bonds. The le…
Confinement transition in the QED-Gross-Neveu-XY universality class
Lukas Janssen, Wei Wang, Michael M. Scherer +2
The coupling between fermionic matter and gauge fields plays a fundamental role in our understanding of nature, while at the same time posing a challenging problem for theoretical…
Magnon dispersion and dynamic spin response in three-dimensional spin models for -RuCl
Lukas Janssen, Stefan Koch, Matthias Vojta
In the search for experimental realizations of bond-anisotropic Kitaev interactions and resulting spin-liquid phases, the layered magnet -RuCl is a prime candidate. Its mode…
Soluble Fermionic Quantum Critical Point in Two Dimensions
Shouryya Ray, Matthias Vojta, Lukas Janssen
We study a model for a quantum critical point in two spatial dimensions between a semimetallic phase, characterized by a stable quadratic Fermi node, and an ordered phase, in which…