23 citations · 34 across the 3 of their papers we have counts for
13 papers
Monte Carlo Studies of Twisted Bilayer Graphene: Strain and Thermal Fluctuations
Johannes S. Hofmann, Patrick Ledwith, Ashvin Vishwanath +2
We study the phase diagram of twisted bilayer graphene at charge neutrality as a function of twist angle , uniaxial heterostrain , and temperature using sign-pr…
Fermionic Monte Carlo study of a realistic model of twisted bilayer graphene
Johannes S. Hofmann, Eslam Khalaf, Ashvin Vishwanath +2
The rich phenomenology of twisted bilayer graphene (TBG) near the magic angle is believed to arise from electron correlations in topological flat bands. An unbiased approach to thi…
Electromagnetic response of composite Dirac fermions in the half-filled Landau level
Johannes Hofmann
An effective field theory of composite Dirac fermions was proposed by Son [Phys. Rev. X 5, 031027 (2015)] as a theory of the half-filled Landau level with explicit particle-hole sy…
Hydrodynamics of a superfluid smectic
Johannes Hofmann, Wilhelm Zwerger
We determine the hydrodynamic modes of the superfluid analog of a smectic-A phase in liquid crystals, i.e., a state in which both gauge invariance and translational invariance alon…
Universal relations for dipolar quantum gases
Johannes Hofmann, Wilhelm Zwerger
We establish that two-dimensional dipolar quantum gases admit a universal description, i.e., their thermodynamic properties are independent of details of the interaction at short d…
Formation of silicon nanocrystals in silicon carbide using flash lamp annealing
C. Weiss, M. Schnabel, S. Prucnal +5
During the formation of Si nanocrystals (Si NC) in SiC layers via solid-phase crystallization, the unintended formation of nanocrystalline SiC reduces the minority carr…