A 2D heavy fermion CePb₃ kagome material on silicon: emergence of unique spin polarized states for spintronics

Abstract

We report on the successful synthesis of a 2D atomically-thin heavy-fermion CePb3 kagome compound on Si(111) surface. Growth and morphology were controlled and characterized through scanning tunneling microscopy observations revealing...

Zigzag dice lattice ribbons: Distinct edge morphologies and structure-spectrum correspondences

“…Finally, there are methods not so easy to implement at present but are valid in principle and may turn out to be feasible later. An example is the thin film on a suitable substrate, grown by controlled deposition or self-assembling, which has been used to fabricate the 2D kagome lattice [67,75]. To apply this method, we have to find a suitable substrate that can guide the growth of the 2D dice lattice, and take narrow strips of the substrate to grow our q-1D minimal ribbons.…”

“…Famous examples of such 2D lattices with both flat bands and Dirac cones include the kagome lattice [58,59], the Lieb lattice [60,61], and the dice lattice [62][63][64][65]. These exotic 2D lattices have been experimentally realized in a variety of systems [6,7], ranging from solid-states films and layered materials [66,67], to various artificial networks and lattices [68][69][70][71][72][73][74][75], and to atomistic chemical 2D systems made of molecular frameworks [76][77][78]. Compared to the kagome lattice and the Lieb lattice that have a single Dirac cone in the band structures, the dice lattice is unique since its band structures contain two degenerate Dirac cones that constitute a two-component valley degree of freedom, which allows for applications in valleytronics [79].…”

Emergence of quasi-1D spin-polarized states in ultrathin Bi films on InAs(111)A for spintronics applications

“…The discovery, characterization and control of electronic properties in low-dimensional materials reduced down to the atomic-scale limit are of special interest for nanoelectronics due to a number of fascinating effects such as unconventional superconductivity, 1 non-trivial topology, 2 flat bands, 3 the topological Hall effect, 4 strong spin-orbit coupling effects induced by the integration of heavy quasiparticles 5 or interface engineering, 6,7 highly anisotropic spin-polarized states [8][9][10] and other emergent effects promising for versatile applications in the nanotechnology industry. [11][12][13] It is noteworthy that spinorbit coupling (SOC) plays a decisive role in many electronic effects observed in quantum materials.…”

Topological phases of graphene-Kagome systems

“…Two-dimensional (2D) networks with different topologies have been largely studied, mainly those composed by honeycomb and Kagome lattices [1,2]. Systems described by such lattices, besides presenting fundamental interesting properties, often provide potential application evidences, as it is the case of 2D CePb 3 Kagome material on silicon, with unique spin-polarized states, appropriated for spintronics devices [3]. In particular, covalent-organic and metal-organic frameworks (COF and MOF) based on Kagome lattices address a rich scenario for investigating new quantum physics [4,5].…”