5 papers
Electrically Tunable Valley-Based Qubits in Moiré Quantum Dots
Yasser Saleem, Pawel Potasz, Ewelina M. Hankiewicz
The search for scalable, electrically controlled qubits remains a central challenge in quantum technology. We introduce gate-defined moiré quantum dots as a promising platform for…
Engineering Biquadratic Interactions in Spin-1 Chains by Spin-1/2 Spacers
Yasser Saleem, Weronika Pasek, Marek Korkusinski +2
Low-dimensional quantum systems host a variety of exotic states, such as symmetry-protected topological ground states in spin-1 Haldane chains. Real-world realizations of such stat…
Controlling spin- antiferromagnetic interaction strength in nanographene dimers
Robiatul Adawia, Pawel Tecmer, Pawel Potasz
We demonstrate that the effective spin-exchange coupling in open-shell nanographene dimers can be precisely tuned via tip-induced dehydrogenation of selected carbon atoms. Usin…
Topological Edge States Emerging from Twisted Moiré Bands
Yasser Saleem, PaweÅ Potasz, Anna DyrdaÅ +2
We study twisted bilayer WSe within a continuum moiré model and introduce a method for treating finite geometries directly in the continuum framework, overcoming limitations a…
Band mixing and particle-hole asymmetry in moiré fractional Chern insulators
Nicolás Morales-Durán, Jingtian Shi, Cristian Voinea +2
We investigate the effect of remote band mixing on the stability of fractional Chern insulators in a family of models that approximate continuum descriptions of moiré materials. O…