Hut-shaped lead nanowires with one-dimensional electronic properties

Kopciuszyński, M.; Stȩpniak-Dybala, Agnieszka; Dachniewicz, M.; Żurawek, Lucyna; Krawiec, Mariusz; Zdyb, R.

doi:10.1103/physrevb.102.125415

Cited by 3 publications

(2 citation statements)

References 60 publications

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“…The wave function phase interference of the electrons contributing to the current, depending upon the parameters, can give rise to a total destructive interference for just one spin state, resulting in a fully spin-polarized current for the opposite spin. The 1DLSOC could be a nanowire adsorbed onto a metallic surface with a strong or giant Rashba SOC [54][55][56][57][58][59][60][61][62][63][64][65][66] or a semiconductor nanowire, as in the systems studied in refs. [67,68].…”

Section: Interferometer Design and Model Descriptionmentioning

confidence: 99%

Totally Spin-Polarized Currents in an Interferometer with Spin–Orbit Coupling and the Absence of Magnetic Field Effects

et al. 2022

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The paper studies the electronic current in a one-dimensional lead under the effect of spin–orbit coupling and its injection into a metallic conductor through two contacts, forming a closed loop. When an external potential is applied, the time reversal symmetry is broken and the wave vector k of the circulating electrons that contribute to the current is spin-dependent. As the wave function phase depends upon the vector k, the closed path in the circuit produces spin-dependent current interference. This creates a physical scenario in which a spin-polarized current emerges, even in the absence of external magnetic fields or magnetic materials. It is possible to find points in the system’s parameter space and, depending upon its geometry, the value of the Fermi energy and the spin–orbit intensities, for which the electronic states participating in the current have only one spin, creating a high and totally spin-polarized conductance. For a potential of a few tens of meV, it is possible to obtain a spin-polarized current of the order of μA. The properties of the obtained electronic current qualify the proposed device as a potentially important tool for spintronics applications.

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Section: Interferometer Design and Model Descriptionmentioning

confidence: 99%

Totally Spin-Polarized Currents in an Interferometer with Spin–Orbit Coupling and the Absence of Magnetic Field Effects

et al. 2022

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“…Spin-orbit coupling (SOC) very often plays a key role in many electronic effects observed in the 2D materials. Among other heavy elements, lead and bismuth appear to be the very promising candidates for realizing exotic electronic states, since they have the largest atomic spin-orbitcoupling values and are known to realise unique quantum phenomena in a variety of perspective 1D and 2D materials, such as Pb atomic chains (Mihalyuk et al, 2020) and nanowires (Kopciuszyński et al, 2020) promising for realizing spin-polarized electron transport, plumbene (Zhao et al, 2016;Yuhara et al, 2019) and bismuthene (Luo and Xiang, 2015;Reis et al, 2017) are known to be topological materials, superconducting ultrathin Pb atomic films (Zhang et al, 2010) and ultrathin Bi films (Hirahara et al, 2011) demonstrating 1D topological spin-polarized edge states (Drozdov et al, 2014). There are various bismuth and lead compounds, which are found to be superconductors (Özer et al, 2007) or topological semimetals (Di Bernardo et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Insights Into the Electronic Properties of PbBi Atomic Layers on Ge(111) and Si(111) Surfaces

et al. 2022

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Co-adsorption of Pb and Bi onto Si(111) and Ge(111) surfaces has been found to result in formation of atomic-layer PbBi compounds having similar structures. These are two co-existing crystalline PbBi phases with 23×23 and 2 × 2 periodicities. Using density functional theory calculations, we found that these two phases present insulating and highly anisotropic metallic systems, respectively. However, electronic structure of the metallic 2 × 2-PbBi phase on Ge(111) appears qualitatively different from that on the Si(111). We investigated electronic properties of the PbBi compound considering the effects induced by the different supporting substrates, namely Si(111) and Ge(111). As a part of comparative study, we made the chemical-bonding analysis and examined a free-standing PbBi layer inspecting the dependence of its spectral characteristics on the compressive/tensile strain. We believe that the present findings will play an important role in the development of new electronic devices fabricated in the ultimate two-dimensional limit.

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One-dimensional spin-polarized electron channel in the two-dimensional PbBi compound on silicon

et al. 2021

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Hut-shaped lead nanowires with one-dimensional electronic properties

Cited by 3 publications

References 60 publications

Totally Spin-Polarized Currents in an Interferometer with Spin–Orbit Coupling and the Absence of Magnetic Field Effects

Totally Spin-Polarized Currents in an Interferometer with Spin–Orbit Coupling and the Absence of Magnetic Field Effects

Insights Into the Electronic Properties of PbBi Atomic Layers on Ge(111) and Si(111) Surfaces

One-dimensional spin-polarized electron channel in the two-dimensional PbBi compound on silicon

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