295 citations · 3.3k across the 91 of their papers we have counts for
38 papers · 1 filter
Intervalley coherence and flavor polarization in three-valley moiré systems
Jeyong Park, Laura Classen, Mathias S. Scheurer
We investigate interaction-induced symmetry breaking in moiré superlattices created by twisting two identical materials where the electronic low-energy degrees of freedom reside in…
Hatsugai-Kohmoto-like Models for Altermagnets and Odd-Parity Magnets
Konstantin Rickelt, Denis Sedov, Mathias S. Scheurer
We introduce a generalized Hatsugai-Kohmoto multi-orbital model and study its phase diagram and physical properties in the additional presence of perturbations that lift any extens…
Superconductivity of Incoherent Electrons near the Relativistic Mott Transition in Twisted Dirac Materials
Veronika C. Stangier, Mathias S. Scheurer, Daniel E. Sheehy +1
We demonstrate that superconductivity driven by strong quantum-critical fluctuations can emerge near relativistic Mott transitions in twisted two-dimensional materials, taking on a…
Spin-orbit crossover and the origin of magnetic torque in kagome metals
Mathias S. Scheurer, Harley D. Scammell
Recent experiments on the kagome metal CsVSb reveal a curious phase transition-like feature: a nematic magnetic torque response that abruptly sets in at K,…
Moiré -valley bilayers: quasi-one-dimensional physics, unconventional spin textures and twisted van Hove singularities
Julian Ingham, Mathias S. Scheurer, Harley D. Scammell
Motivated by the discovery of quasi-two-dimensional kagome metals AVSb, we consider the theory of twisted bilayers in which the Fermi surface is near the -point. Surpris…
Finite-momentum pairing and superlattice superconductivity in valley-imbalanced rhombohedral graphene
Maine Christos, Pietro M. Bonetti, Mathias S. Scheurer
Inspired by the recent experimental discovery of superconductivity emerging from a time-reversal symmetry-breaking normal state in tetralayer rhombohedral graphene, we here investi…
Physics-informed Transformers for Electronic Quantum States
João Augusto Sobral, Michael Perle, Mathias S. Scheurer
Neural-network-based variational quantum states in general, and more recently autoregressive models in particular, have proven to be powerful tools to describe complex many-body wa…
Fractionalized Altermagnets: from neighboring and altermagnetic spin-liquids to spin-symmetric band splitting
João Augusto Sobral, Subrata Mandal, Mathias S. Scheurer
We study quantum-fluctuation-driven fractionalized phases in the vicinity of altermagnetic order. First, the long-range magnetic orders in the vicinity of collinear altermagnetism…
A Novel Perspective on Ideal Chern Bands with Strong Short-Range Repulsion: Applications to Correlated Metals, Superconductivity, and Topological Order
Patrick H. Wilhelm, Andreas M. Läuchli, Mathias S. Scheurer
Motivated by recent experiments on correlated van der Waals materials, including twisted and rhombohedral graphene and twisted WSe, we perform an analytical and numerical study…
Quadratic Dirac fermions and the competition of ordered states in twisted bilayer graphene
Julian Ingham, Tommy Li, Mathias S. Scheurer +1
Magic-angle twisted bilayer graphene (TBG) exhibits a captivating phase diagram as a function of doping, featuring superconductivity and a variety of insulating and magnetic states…
An exactly solvable dissipative spin liquid
Leyna Shackleton, Mathias S. Scheurer
Exactly solvable Hamiltonians with spin liquid ground states have proven to be extremely useful, not only because they unambiguously demonstrate that these phases can arise in syst…
Machine Learning Microscopic Form of Nematic Order in twisted double-bilayer graphene
João Augusto Sobral, Stefan Obernauer, Simon Turkel +2
Modern scanning probe techniques, like scanning tunneling microscopy (STM), provide access to a large amount of data encoding the underlying physics of quantum matter. In this work…
A model of -wave superconductivity, antiferromagnetism, and charge order on the square lattice
Maine Christos, Zhu-Xi Luo, Henry Shackleton +3
Early studies proposed a connection between cuprate superconductivity and fractionalized spin liquid states. But the low temperature phase diagram is dominated by states without fr…
Non-coplanar magnetism, topological density wave order and emergent symmetry at half-integer filling of moiré Chern bands
Patrick H. Wilhelm, Thomas C. Lang, Mathias S. Scheurer +1
Twisted double- and mono-bilayer graphene are graphene-based moiré materials hosting strongly correlated fermions in a gate-tunable conduction band with a topologically non-trivial…
Twistons in a Sea of Magic
Simon Turkel, Joshua Swann, Ziyan Zhu +8
Magic angle twisted trilayer graphene (TTG) has recently emerged as a new platform to engineer strongly correlated flat bands. Here, we reveal the structural and electronic propert…
Correlated insulators, semimetals, and superconductivity in twisted trilayer graphene
Maine Christos, Subir Sachdev, Mathias S. Scheurer
Motivated by recent experiments indicating strong superconductivity and intricate correlated insulating and flavor-polarized physics in mirror-symmetric twisted trilayer graphene,…
Phonon Hall viscosity from phonon-spinon interactions
Yunchao Zhang, Yanting Teng, Rhine Samajdar +2
Motivated by experimental observations, Samajdar et al. [Nature Physics 15, 1290 (2019)] have proposed that the insulating Neel state in the parent compounds of the cuprates is pro…
Electric-field-tunable electronic nematic order in twisted double-bilayer graphene
Rhine Samajdar, Mathias S. Scheurer, Simon Turkel +4
Graphene-based moiré systems have attracted considerable interest in recent years as they display a remarkable variety of correlated phenomena. Besides insulating and superconducti…
Learning crystal field parameters using convolutional neural networks
Noah F. Berthusen, Yuriy Sizyuk, Mathias S. Scheurer +1
We present a deep machine learning algorithm to extract crystal field (CF) Stevens parameters from thermodynamic data of rare-earth magnetic materials. The algorithm employs a two-…
Universal moiré nematic phase in twisted graphitic systems
Carmen Rubio-Verdú, Simon Turkel, Larry Song +12
Graphene moiré superlattices display electronic flat bands. At integer fillings of these flat bands, energy gaps due to strong electron-electron interactions are generally observed…
Anomalous mirror symmetry breaking in a model insulating cuprate SrCuOCl
A. de la Torre, K. L. Seyler, L. Zhao +8
Understanding the complex phase diagram of cuprate superconductors is an outstanding challenge. The most actively studied questions surround the nature of the pseudogap and strange…
Superconductivity, correlated insulators, and Wess-Zumino-Witten terms in twisted bilayer graphene
Maine Christos, Subir Sachdev, Mathias S. Scheurer
Recent experiments on twisted bilayer graphene have shown a high-temperature parent state with massless Dirac fermions and broken electronic flavor symmetry; superconductivity and…
Bilocal quantum criticality
Harley D. Scammell, Mathias S. Scheurer, Subir Sachdev
We consider 2+1 dimensional conformal gauge theories coupled to additional degrees of freedom which induce a spatially local but long-range in time interaction between…
Protection of parity-time symmetry in topological many-body systems: non-Hermitian toric code and fracton models
Leyna Shackleton, Mathias S. Scheurer
In the study of -symmetric quantum systems with non-Hermitian perturbations, one of the most important questions is whether eigenvalues stay real or whether…