321 citations · 1.3k across the 38 of their papers we have counts for
38 papers
Elementary band representations for the single-particle Green's function of interacting topological insulators
Dominik Lessnich, Stephen M. Winter, Mikel Iraola +2
We discuss the applicability of elementary band representations (EBRs) to diagnose spatial- and time-reversal-symmetry protected topological phases in interacting insulators in ter…
Angle-dependent thermodynamics of -RuCl
S. Bachus, D. A. S. Kaib, A. Jesche +6
Thermodynamics of the Kitaev honeycomb magnet -RuCl is studied for different directions of in-plane magnetic field using measurements of the magnetic Grüneisen parameter $Γ_…
Prediction of Double-Weyl Points in the Iron-Based Superconductor CaKFeAs
N. Heinsdorf, M. H. Christensen, M. Iraola +6
Employing a combination of symmetry analysis, low-energy modeling, and ab initio simulations, we predict the presence of magnetic-field-induced Weyl points close to the Fermi level…
Towards a Topological Quantum Chemistry description of correlated systems: the case of the Hubbard diamond chain
Mikel Iraola, Niclas Heinsdorf, Apoorv Tiwari +9
The recently introduced topological quantum chemistry (TQC) framework has provided a description of universal topological properties of all possible band insulators in all space gr…
Evolution of nematic fluctuations in CaK(FeNi)As with spin-vortex crystal magnetic order
Anna E. Böhmer, Fei Chen, William R. Meier +11
The CaK(FeNi)As superconductors resemble the archetypal 122-type iron-based materials but have a crystal structure with distinctly lower symmetry. This fa…
Anisotropic superconductivity and Fermi surface reconstruction in the spin-vortex antiferromagnetic superconductor CaK(FeNi)As
José Benito Llorens, Edwin Herrera, Víctor Barrena +9
High critical temperature superconductivity often occurs in systems where an antiferromagnetic order is brought near by slightly modifying pressure or doping. CaKFeAs$_4…
When superconductivity does not fear magnetism: Insight into electronic structure of RbEuFeAs
T. K. Kim, K. S. Pervakov, D. V. Evtushinsky +13
In the novel stoichiometric iron-based material RbEuFeAs superconductivity coexists with a peculiar long-range magnetic order of Eu 4f states. Using angle-resolved phot…
Engineering Topological Phases Guided by Statistical and Machine Learning Methods
Thomas Mertz, Roser Valentí
The search for materials with topological properties is an ongoing effort. In this article we propose a systematic statistical method supported by machine learning techniques that…
Non-local correlations in Iron Pnictides and Chalcogenides
Shinibali Bhattacharyya, Kristofer Björnson, Karim Zantout +6
Deviations of low-energy electronic structure of iron-based superconductors from density functional theory predictions have been parametrized in terms of band- and orbital-dependen…
Deconfinement of Mott Localized Electrons into Topological and Spin-Orbit Coupled Dirac Fermions
José M. Pizarro, Severino Adler, Karim Zantout +5
The interplay of electronic correlations, spin-orbit coupling and topology holds promise for the realization of exotic states of quantum matter. Models of strongly interacting elec…
Alleviating the Sign Problem in Quantum Monte Carlo Simulations of Spin-Orbit-Coupled Multi-Orbital Hubbard Models
Aaram J. Kim, Philipp Werner, Roser Valentí
We present a strategy to alleviate the sign problem in continuous-time quantum Monte Carlo (CTQMC) simulations of the dynamical-mean-field-theory (DMFT) equations for the spin-orbi…
Statistical Analysis of the Chern Number in the Interacting Haldane-Hubbard Model
Thomas Mertz, Karim Zantout, Roser Valentí
In the context of many-body interacting systems described by a topological Hamiltonian, we investigate the robustness of the Chern number with respect to different sources of error…
Pressure-induced formation of rhodium zigzag chains in the honeycomb rhodate LiRhO
V. Hermann, S. Biswas, J. Ebad-Allah +8
We use powder x-ray diffraction to study the effect of pressure on the crystal structure of the honeycomb rhodate LiRhO. We observe low-pressure ( = 6.5 GPa)…
Ultrahigh Elastically Compressible and Strain-Engineerable Intermetallic Compounds Under Uniaxial Mechanical Loading
Gyuho Song, Vladislav Borisov, William R. Meier +6
Intermetallic compounds possess unique atomic arrangements that often lead to exceptional material properties, but their extreme brittleness usually causes fracture at a limited st…
Detuning the Honeycomb of -RuCl: Pressure-Dependent Optical Studies Reveal Broken Symmetry
Tobias Biesner, Sananda Biswas, Weiwu Li +10
The honeycomb Mott insulator -RuCl loses its low-temperature magnetic order by pressure. We report clear evidence for a dimerized structure at GPa and observe the brea…
Suppression of topological Mott-Hubbard phases by multiple charge orders in the honeycomb extended Hubbard model
Mario Bijelic, Ryui Kaneko, Claudius Gros +1
We investigate the competition between charge-density-wave (CDW) states and a Coulomb interaction-driven topological Mott insulator (TMI) in the honeycomb extended Hubbard model. F…
Nature of optical excitations in the frustrated kagome compound Herbertsmithite
Andrej Pustogow, Ying Li, Ievgen Voloshenko +5
Optical conductivity measurements are combined with density functional theory calculations in order to understand the electrodynamic response of the frustrated Mott insulators Herb…
Charge orders in organic charge-transfer salts
Ryui Kaneko, Luca F. Tocchio, Roser Valentí +1
Motivated by recent experimental suggestions of charge-order-driven ferroelectricity in organic charge-transfer salts, such as -(BEDT-TTF)Cu[N(CN)]Cl, we investigate mag…
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…
Pressure induced half-collapsed-tetragonal phase in CaKFeAs
Udhara S. Kaluarachchi, Valentin Taufour, Aashish Sapkota +11
We report the temperature-pressure phase diagram of CaKFeAs established using high pressure electrical resistivity, magnetization and high energy x-ray diffraction measurem…
Emergent lattices with geometrical frustration in doped extended Hubbard models
Ryui Kaneko, Luca F. Tocchio, Roser Valentí +1
Spontaneous charge ordering occurring in correlated systems may be considered as a possible route to generate effective lattice structures with unconventional couplings. For this p…
Electronic structure and spin-orbit driven novel magnetism in d4.5 insulator Ba3YIr2O9
S. K. Panda, S. Bhowal, Ying Li +4
We have carried out a detailed first-principles study of a d quaternary iridate BaYIrO both in its 6H-perovskite-type ambient pressure (AP) phase and also for t…
Spontaneous symmetry breaking in correlated wave functions
Ryui Kaneko, Luca F. Tocchio, Roser Valentí +2
We show that Jastrow-Slater wave functions, in which a density-density Jastrow factor is applied onto an uncorrelated fermionic state, may possess long-range order even when all sy…
Paramagnetism in the kagome compounds (Zn,Mg,Cd)Cu(OH)Cl
Yasir Iqbal, Harald O. Jeschke, Johannes Reuther +4
Frustrated magnetism on the kagome lattice has been a fertile ground for rich and fascinating physics, ranging from experimental evidence of a spin liquid to theoretical prediction…