565 citations
- Middle East Technical UniversityTR6 papers
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10 papers · 1 filter
Confined states in multiple quantum well structures of SiGe nanowire superlattices
Nurten Akman, Engin Durgun, Seymur Cahangirov +1
Mechanical properties, atomic and energy band structures of bare and hydrogen passivated SiGe nanowire superlattices have been investigated by using first-principles ps…
Spintronic Properties of Zigzag-Edged Triangular Graphene Flakes
Hasan Sahin, R. Tugrul Senger, Salim Ciraci
We investigate quantum transport properties of triangular graphene flakes with zigzag edges by using first principles calculations. Triangular graphene flakes have large magnetic m…
Mechanical and Electronic Properties of MoS Nanoribbons and Their Defects
C. Ataca, H. Şahin, E. Aktürk +1
We present our study on atomic, electronic, magnetic and phonon properties of one dimensional honeycomb structure of molybdenum disulfide (MoS) using first-principles plane wav…
dc-switchable and single-nanocrystal-addressable coherent population transfer
Deniz Gunceler, Ceyhun Bulutay
Achieving coherent population transfer in the solid-state is challenging compared to atomic systems due to closely spaced electronic states and fast decoherence. Here, within an at…
Chiral metamaterials with negative refractive index based on four "U" split ring resonators
Zhaofeng Li, Rongkuo Zhao, Thomas Koschny +5
A uniaxial chiral metamaterial is constructed by double-layered four "U" split ring resonators mutually twisted by 90 degrees. It shows a giant optical activity and circular dichro…
Long ranged interactions in carbon atomic chains
S. Cahangirov, M. Topsakal, S. Ciraci
Based on first-principles calculations we revealed fundamental properties of infinite and finite size monatomic chains of carbon atoms in equilibrium and under an applied strain. D…