149 citations · 1.1k across the 27 of their papers we have counts for
27 papers
Quartic energy band engineering in artificial semiconductor honeycomb lattices
Emre Okcu, Emre Mesudiyeli, Hâldun Sevinçli +1
Artificially engineered lattices provide a flexible platform for reproducing and extending the electronic behavior of atomic-scale materials. Artificial graphene systems, in partic…
Nagaoka ferromagnetism in semiconductor artificial graphene
Gökhan Öztarhan, Paweł Potasz, A. D. Güçlü
We present the emergence of Nagaoka ferromagnetism in semiconductor-based artificial graphene with realistic Coulomb interaction using high-precision variational and diffusion Mont…
Quantum Monte Carlo Study of Semiconductor Artificial Graphene Nanostructures
Gökhan Öztarhan, E. Bulut Kul, Emre Okcu +1
Semiconductor artificial graphene nanostructures where Hubbard model parameter can be of the order of 100, provide a highly controllable platform to study strongly correlated…
Atomic Collapse in Disordered Graphene Quantum Dots
Mustafa Polat, A. D. Güçlü
In this paper, we numerically study a Coulomb impurity problem for interacting Dirac fermions restricted in disordered graphene quantum dots. In the presence of randomly distribute…
Electronic and magnetic properties of graphene quantum dots with two charged vacancies
E. Bulut Kul, M. Polat, A. D. Güçlü
Electronic and magnetic properties of a system of two charged vacancies in hexagonal shaped graphene quantum dots are investigated using a mean-field Hubbard model as a function of…
Collapse of the vacuum in hexagonal graphene quantum dots: a comparative study between the tight-binding and the mean-field Hubbard models
Mustafa Polat, Hâldun Sevinçli, A. D. Güçlü
In this paper, we perform a systematic study on the electronic, magnetic, and transport properties of the hexagonal graphene quantum dots (GQDs) with armchair edges in the presence…