Signature of Spin-Resolved Quantum Point Contact in p-Type Trilayer WSe2 van der Waals Heterostructure.
Sign Up to like & getrecommendations! Published in 2021 at "Nano letters"
DOI: 10.1021/acs.nanolett.1c01828
Abstract: In this study, an electrostatically induced quantum confinement structure, so-called quantum point contact, has been realized in a p-type trilayer tungsten diselenide-based van der Waals heterostructure with modified van der Waals contact method with degenerately… read more here.
Keywords: van der; der waals; point contact; quantum point ... See more keywords
Robust quantum point contact via trench gate modulation
Sign Up to like & getrecommendations! Published in 2020 at "Scientific Reports"
DOI: 10.1038/s41598-020-76790-z
Abstract: Quantum point contacts (QPC) are a primary component in mesoscopic physics and have come to serve various purposes in modern quantum devices. However, fabricating a QPC that operates robustly under extreme conditions, such as high… read more here.
Keywords: trench gate; qpc; quantum point;
Quantized conductance in a one-dimensional ballistic oxide nanodevice
Sign Up to like & getrecommendations! Published in 2019 at "Nature Electronics"
DOI: 10.1038/s41928-020-0383-2
Abstract: The electric-field effect control of two-dimensional electron gases (2-DEGs) has allowed nanoscale electron quantum transport to be explored in semiconductors. Structures based on transition metal oxides have electronic states that favour the emergence of novel… read more here.
Keywords: laalo srtio; one dimensional; quantized conductance; quantum point ... See more keywords
Spin filtering effect generated by the inter-subband spin-orbit coupling in the bilayer nanowire with the quantum point contact
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/srep45346
Abstract: The spin filtering effect in the bilayer nanowire with quantum point contact is investigated theoretically. We demonstrate the new mechanism of the spin filtering based on the lateral inter-subband spin-orbit coupling, which for the bilayer… read more here.
Keywords: quantum point; spin filtering; filtering effect; spin ... See more keywords
Effects of electron confinement on the acoustoelectric current in suspended quantum point contacts
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.4984228
Abstract: An acoustoelectric current driven through a quantum point contact (QPC) on a suspended nanobridge by surface acoustic waves displays a non-trivial behavior in the presence of a perpendicular magnetic field. Our study reveals that the… read more here.
Keywords: electron confinement; effects electron; acoustoelectric current; quantum point ... See more keywords
New supercurrent pattern in quantum point contact with strained graphene nanoribbon
Sign Up to like & getrecommendations! Published in 2020 at "New Journal of Physics"
DOI: 10.1088/1367-2630/abd0b7
Abstract: We theoretically reveal the unusual features of the Josephson effect in a strained zigzag graphene nanoribbon with a small length relative to the superconducting coherence length and an arbitrary width. We find a step-wise variation… read more here.
Keywords: point contact; graphene nanoribbon; supercurrent; quantum point ... See more keywords
Thermoelectric Scanning-Gate Interferometry on a Quantum Point Contact
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Applied"
DOI: 10.1103/physrevapplied.11.034069
Abstract: We introduce a new scanning probe technique derived from scanning gate microscopy (SGM) in order to investigate thermoelectric transport in two-dimensional semiconductor devices. The thermoelectric scanning gate Microscopy (TSGM) consists in measuring the thermoelectric voltage… read more here.
Keywords: microscopy; thermoelectric scanning; interferometry; point contact ... See more keywords
Nonequilibrium phase transition in transport through a driven quantum point contact
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.l041405
Abstract: We study the transport of noninteracting fermions through a periodically driven quantum point contact (QPC) connecting two tight-binding chains. Initially, each chain is prepared in its own equilibrium state, generally with a bias in chemical… read more here.
Keywords: transport; driven quantum; phase transition; point contact ... See more keywords
Imaging backscattering in graphene quantum point contacts
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.165310
Abstract: We study graphene quantum point contacts (QPCs) and imaging of the backscattering of the Fermi level wave function by potential introduced by a scanning probe. We consider both etched single-layer QPCs as well as the… read more here.
Keywords: imaging backscattering; graphene quantum; quantum point; point contacts ... See more keywords
Conductance signatures of odd-frequency superconductivity in quantum spin Hall systems using a quantum point contact
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.97.134523
Abstract: Topological superconductors give rise to unconventional superconductivity, which is mainly characterized by the symmetry of the superconducting pairing amplitude. However, since the symmetry of the superconducting pairing amplitude is not directly observable, its experimental identification… read more here.
Keywords: odd frequency; quantum point; point contact; superconductivity ... See more keywords
Functional renormalization group treatment of the 0.7 analog in quantum point contacts
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.115112
Abstract: We use a recently developed fRG method (extendend Coupled-Ladder Approximation) to study the 0.7 analog in quantum point contacts, arising at the crossing of the first and second band at sufficiently high magnetic fields. We… read more here.
Keywords: quantum point; analog quantum; analog; point contacts ... See more keywords