Confinement of wave-function in Fractal geometry, a detection using DFT

Abstract

Fractals are self-repeating patterns which have dimensions given by fractions rather than integers. While the dimension of a system unambiguously defines its properties, a fractional dimensional system can exhibit interesting properties. The recent work on confinement of the electronic wavefunction in fractal dimensions by creating artificial lattice has given rise to new possibilities of designing artificial lattice. In this study, we demonstrate that the first principle methods can be effectively employed to investigate, design and characterize electrons in Hausdorff dimension. We apply the method to study the molecular graphene and Lieb lattices which lead to fractal lattices based on these fractals. We construct the hexaflake and Vicsek fractals by adsorption of CO molecules on Cu(111) surface. This opens up the possibility of using high throughput techniques for screening and discovering such lattices from currently known crystals or developing them altogether.

4 pages, 2 figures

References in corpus (7)

• Quantum ESPRESSO: a modular and open-source software project for quantum simulations of materials
• Precision and efficiency in solid-state pseudopotential calculations
• Experimental realization and characterization of an electronic Lieb lattice
• Design and characterization of electronic fractals
• A kilobyte rewritable atomic memory
• Transport and optical properties of an electron gas in a Sierpinski carpet
• High-order fractal states in graphene superlattices