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4 papers · 2 filters
Dimensional crossover and enhanced thermoelectric efficiency due to broken symmetry in graphene antidot lattices
M. Neşet Çınar, Hâldun Sevinçli
Graphene antidot lattices (GALs) are two-dimensional (2D) monolayers with periodically placed holes in otherwise pristine graphene. We investigate the electronic properties of symm…
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…