825 citations · 1.1k across the 14 of their papers we have counts for
14 papers
One-dimensional Dirac modes in the core of a pentagonal topological crystalline insulator nanowire
Saeed Samadi, Rafał Rechciński, Marta A. Chabowska +1
We investigate the electronic band topology of recently fabricated pentagonal IV-VI semiconductor nanowires, which contain five radial twin planes meeting at the nanowire…
Topological electronic structure of twin boundaries and twinning superlattices in the SnTe material class
Saeed Samadi, Rafał Rechciński, Ryszard Buczko
The topological electronic structure of a single twin boundary and coherent twinning superlattices (TSLs) based on the SnTe class of material is calculated and discussed within a s…
Topological states on uneven (Pb,Sn)Se (001) surfaces
Rafał Rechciński, Ryszard Buczko
The impact of surface morphology on electronic structure of topological crystalline insulators is studied theoretically. As an example, the structure of topologically protected ele…
Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures
Craig M. Polley, Ryszard Buczko, Alexander Forsman +11
The 'double Dirac cone' 2D topological interface states found on the (001) faces of topological crystalline insulators such as PbSnSe feature degeneracies located awa…
Quantum spin Hall effect in strained (111)-oriented SnSe layers
Shiva Safaei, Marta Galicka, Perla Kacman +1
Recently, the quantum spin Hall effect has been predicted in (111)-oriented thin films of SnSe and SnTe topological crystalline insulators. It was shown that in these films the ene…
Quantum Spin Hall Effect in IV-VI Topological Crystalline Insulators
Shiva Safaei, Marta Galicka, Perla Kacman +1
We envision that quantum spin Hall effect should be observed in -oriented thin films of SnSe and SnTe topological crystalline insulators. Using a tight-binding approach supp…
Observation of topological crystalline insulator surface states on (111)-oriented PbSnSe films
C. M. Polley, P. Dziawa, A. Reszka +13
We present angle resolved photoemission spectroscopy measurements of the surface states on in-situ grown (111) oriented films of PbSnSe, a three dimensional topologic…
Segregation of impurities in GaAs and InAs nanowires
M. Galicka, R. Buczko, P. Kacman
Using ab initio methods based on the density functional theory, we investigate the segregation and formation energies for various dopants (Si, Be, Zn, Sn), commonly used to obtain…
Spin-polarized (001) surface states of the topological crystalline insulator Pb_{0.73}Sn_{0.27}Se
B. M. Wojek, R. Buczko, S. Safaei +9
We study the nature of (001) surface states in Pb_{0.73}Sn_{0.27}Se in the newly discovered topological-crystalline-insulator (TCI) phase as well as the corresponding topologically…
Topological crystalline insulator states in Pb(1-x)Sn(x)Se
P. Dziawa, B. J. Kowalski, K. Dybko +9
Topological insulators are a novel class of quantum materials in which time-reversal symmetry, relativistic (spin-orbit) effects and an inverted band structure result in electronic…
Structural and electronic properties of Pb1-xCdxTe and Pb1-xMnxTe ternary alloys
Malgorzata Bukala, Piotr Sankowski, Ryszard Buczko +1
A systematic theoretical study of two PbTe-based ternary alloys, Pb1-xCdxTe and Pb1-xMnxTe, is reported. First, using ab initio methods we study the stability of the crystal struct…
PbTe/PbSnTe heterostructures as analogs of topological insulators
Ryszard Buczko, Łukasz Cywiński
We investigate theoretically the PbTe/PbSnTe heterostructure grown in [111] direction, specifically a quantum wall (potential step of width d) of PbTe embedded in Pb_{1-x}Sn_{x}Te.…
Magnetic polarons in weakly doped high-Tc superconductors
E. M. Hankiewicz, R. Buczko, Z. Wilamowski
We consider a spin Hamiltonian describing - exchange interactions between localized spins of a finite antiferromagnet as well as - interactions between a conducting…
New type of antiferromagnetic polaron and bipolaron in HTc - superconductors
E. Hankiewicz, R. Buczko, Z. Wilamowski
The possibility of formation of a new type of polaron based on the quantum aniferromagnet (AF) model is reported. We take into account exchange interactions between localized d-d s…