Pressure-tuned many-body phases through Γ-K valleytronics in moire bilayer WSe<sub>2</sub>

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Studying electronic band structure in electric field-tunable multilayer graphene systems

Jin Jiang

Magic-angle twisted bilayer graphene (MATBG) harbors various exotic physical phenomena such as strongly correlated topological states, superconductivity, ferromagnetism etc. The flexibility of tuning the twist angle between the layers enhances the electron ...

EPFL2024

Supersymmetry on the honeycomb lattice: Resonating charge stripes, superfrustration, and domain walls

Andreas Martin Läuchli Herzig

We study a model of spinless fermions on the honeycomb lattice with nearest-neighbor exclusion and extended repulsive interactions that exhibits "lattice supersymmetry" [P. Fendley et al., , Phys. Rev. Lett. 90 , 120402 (2003)]. Using a combination of exac ...

AMER PHYSICAL SOC2024

Role of intercalated cobalt in the electronic structure of Co1/3NbS2

László Forró, Helmuth Berger

Co1/3NbS2 is the magnetic intercalate of 2H-NbS2 where electronic itinerant and magnetic properties strongly influence each other throughout the phase diagram. Here we report the angle-resolved photoelectron spectroscopy (ARPES) study in Co1/3NbS2. In agre ...

AMER PHYSICAL SOC2022

Mott versus Hybridization Gap in the Low-Temperature Phase of 1T-TaS2

Oleg Yazyev, Diego José Pasquier

We address the long-standing problem of the ground state of 1T-TaS2 by computing the correlated electronic structure of stacked bilayers using the GW + EDMFT method. Depending on the surface termination, the semi-infinite uncorrelated system is either band ...

AMER PHYSICAL SOC2022

Learning on-top: Regressing the on-top pair density for real-space visualization of electron correlation

Anne-Clémence Corminboeuf, Alberto Fabrizio, Ksenia Briling, David Daniel Girardier

The on-top pair density is a local quantum-chemical property that reflects the probability of two electrons of any spin to occupy the same position in space. Being the simplest quantity related to the two-particle density matrix, the on-top pair density is ...

AMER INST PHYSICS2020