Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Serra, Llorenc"'
Autor:
Legendre, Julian, Zsurka, Eduárd, Di Miceli, Daniele, Serra, Llorenç, Moors, Kristof, Schmidt, Thomas L.
Heterostructures of magnetic topological insulators (MTIs) and superconductors (SCs) in two-dimensional (2D) slab and one-dimensional (1D) nanoribbon geometries have been predicted to host, respectively, chiral Majorana edge states (CMESs) and Majora
Externí odkaz:
http://arxiv.org/abs/2404.16520
Autor:
Zsurka, Eduárd, Wang, Cheng, Legendre, Julian, Di Miceli, Daniele, Serra, Llorenç, Grützmacher, Detlev, Schmidt, Thomas L., Rüßmann, Philipp, Moors, Kristof
We develop an accurate nanoelectronic modeling approach for realistic three-dimensional topological insulator nanostructures and investigate their low-energy surface-state spectrum. Starting from the commonly considered four-band $\boldsymbol{\mathrm
Externí odkaz:
http://arxiv.org/abs/2404.13959
Autor:
Delfanazari, Kaveh, Li, Jiahui, Xiong, Yusheng, Ma, Pengcheng, Puddy, Reuben K., Yi, Teng, Farrer, Ian, Komori, Sachio, Robinson, Jason W. A., Serra, Llorenc, Ritchie, David A., Kelly, Michael J., Joyce, Hannah J., Smith, Charles G.
Quantum point contact or QPC -- a constriction in a semiconducting two-dimensional (2D) electron system with a quantized conductance -- has been found as the building block of novel spintronic, and topological electronic circuits. They can also be us
Externí odkaz:
http://arxiv.org/abs/2312.11248
Autor:
Di Miceli, Daniele, Serra, Llorenç
Publikováno v:
Sci Rep 13, 19955 (2023)
The chiral topological superconductor, which supports propagating nontrivial edge modes while maintaining a gapped bulk, can be realized hybridizing a quantum-anomalous-Hall thin slab with an ordinary $s$-wave superconductor. We show that by sweeping
Externí odkaz:
http://arxiv.org/abs/2311.09664
Publikováno v:
Phys. Rev. B 109, 165306 (2024)
Identifying and controlling decoherence in single electron sources (SES) is important for their applications in quantum information processing. The recent experiments with ultrashort electron pulses [J. D. Fletcher et al., Nat. Commun. 10, 5298 (2019
Externí odkaz:
http://arxiv.org/abs/2310.03728
Autor:
Ali, Hira, Serra, Llorenç
Publikováno v:
Nanomaterials 2023, 13(14), 2102
We study the effect of a local potential shift induced by a side electrode on the edge modes at the boundary between gapped and ungapped bilayer graphene. A potential shift close to the gapped-ungapped boundary causes the emergence of unprotected edg
Externí odkaz:
http://arxiv.org/abs/2309.12013
Autor:
Di Miceli, Daniele, Zsurka, Eduárd, Legendre, Julian, Moors, Kristof, Schmidt, Thomas, Serra, Llorenç
Publikováno v:
Phys. Rev. B 108, 035424 (2023)
We theoretically discuss electronic transport via Majorana states in magnetic topological insulator-superconductor junctions with an asymmetric split of the applied bias voltage. We study normal-superconductor-normal (NSN) junctions made of narrow (w
Externí odkaz:
http://arxiv.org/abs/2303.16261
Publikováno v:
Phys. Rev. B 106, 035424 (2022)
The conductance of electrostatic wire junctions in bilayer graphene, classified as trivial-trivial or trivial-topological regarding the confinement character on each junction side, is calculated. The topological side always corresponds to a kink-anti
Externí odkaz:
http://arxiv.org/abs/2207.08430
Publikováno v:
Phys. Status Solidi B2022, 2200023 (Open Access)
We discuss and compare two different types of confinement in bilayer graphene by top and bottom gating with symmetrical microelectrodes. Trivial confinement corresponds to the same polarity of all top gates, which is opposed to that of all bottom one
Externí odkaz:
http://arxiv.org/abs/2204.07737
Publikováno v:
New J. Phys. 24, 013001 (2022)
We investigate the electronic confinement in bilayer graphene by topological loops of different shapes. These loops are created by lateral gates acting via gap inversion on the two graphene sheets. For large-area loops the spectrum is well described
Externí odkaz:
http://arxiv.org/abs/2110.05811