Search Results - "Peres, Nuno"
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Electron Tunneling through Ultrathin Boron Nitride Crystalline Barriers
Published in Nano letters (14-03-2012)“…We investigate the electronic properties of ultrathin hexagonal boron nitride (h-BN) crystalline layers with different conducting materials (graphite,…”
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Probing the ultimate plasmon confinement limits with a Van der Waals heterostructure
Published in Science (American Association for the Advancement of Science) (20-04-2018)“…Data and materials availability: All data needed to evaluate the conclusions in the paper are present in the paper and/or the Supplementary Materials The…”
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Far-field excitation of single graphene plasmon cavities with ultracompressed mode volumes
Published in Science (American Association for the Advancement of Science) (12-06-2020)“…Acoustic graphene plasmons are highly confined electromagnetic modes carrying large momentum and low loss in the mid-infrared and terahertz spectra. However,…”
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Near-Unity Light Absorption in a Monolayer WS2 Van der Waals Heterostructure Cavity
Published in Nano letters (13-05-2020)“…Excitons in monolayer transition-metal-dichalcogenides (TMDs) dominate their optical response and exhibit strong light–matter interactions with…”
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Quantum surface-response of metals revealed by acoustic graphene plasmons
Published in Nature communications (01-06-2021)“…A quantitative understanding of the electromagnetic response of materials is essential for the precise engineering of maximal, versatile, and controllable…”
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Quantum Nanophotonics in Two-Dimensional Materials
Published in ACS photonics (20-01-2021)“…The field of two-dimensional (2D) materials-based nanophotonics has been growing at a rapid pace, triggered by the ability to design nanophotonic systems with…”
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Strongly Coupled Magnon–Plasmon Polaritons in Graphene-Two-Dimensional Ferromagnet Heterostructures
Published in Nano letters (24-05-2023)“…Magnons and plasmons are different collective modes, involving the spin and charge degrees of freedom, respectively. Formation of hybrid plasmon–magnon…”
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Tunable Exciton Polaritons in Band-Gap Engineered Hexagonal Boron Nitride
Published in ACS nano (23-07-2024)“…We show that hexagonal boron nitride (hBN), a two-dimensional insulator, when subjected to an external superlattice potential forms a paradigm for…”
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A colloquium on the variational method applied to excitons in 2D materials
Published in The European physical journal. B, Condensed matter physics (01-12-2020)“…In this colloquium, we review the research on excitons in van der Waals heterostructures from the point of view of variational calculations. We first make a…”
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Electrical spectroscopy of polaritonic nanoresonators
Published in Nature communications (05-10-2024)“…One of the most captivating properties of polaritons is their capacity to confine light at the nanoscale. This confinement is even more extreme in…”
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Theoretical Methods for Excitonic Physics in 2D Materials
Published in physica status solidi (b) (01-07-2022)“…In this Perspective article, the reader is introduced to several theoretical methods of determining the exciton wave functions and the corresponding…”
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Fresnel polarisation of infra-red radiation by elemental bismuth
Published in The European physical journal. B, Condensed matter physics (01-06-2020)“…We revisit the classical problem of electromagnetic wave refraction from a lossless dielectric to a lossy conductor, where both media are considered to be…”
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Topological Graphene Plasmons in a Plasmonic Realization of the Su–Schrieffer–Heeger Model
Published in ACS photonics (16-06-2021)“…Graphene hybrids, made of thin insulators, graphene, and metals can support propagating acoustic plasmons (AGPs). The metal screening modifies the dispersion…”
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Relaxing Graphene Plasmon Excitation Constraints Through the Use of an Epsilon-Near-Zero Substrate
Published in Plasmonics (Norwell, Mass.) (01-02-2023)“…Graphene plasmons have attracted significant attention due to their tunability, potentially long propagation lengths and ultracompact wavelengths. However, the…”
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Understanding the Electromagnetic Response of Graphene/Metallic Nanostructures Hybrids of Different Dimensionality
Published in ACS photonics (19-08-2020)“…Plasmonic excitations, such as surface-plasmon-polaritons (SPPs) and graphene-plasmons (GPs), carry large momenta and are thus able to confine electromagnetic…”
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A Critical Analysis on the Sensitivity Enhancement of Surface Plasmon Resonance Sensors with Graphene
Published in Nanomaterials (Basel, Switzerland) (26-07-2022)“…The use of graphene in surface plasmon resonance sensors, covering a metallic (plasmonic) film, has a number of demonstrated advantages, such as protecting the…”
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An Assessment of the Eurocode 3 Simplified Formulas for Distortional Buckling of Cold-Formed Steel Lipped Channels
Published in Applied sciences (01-06-2024)“…This paper concerns the Eurocode 3 Part 1-3 (EN 1993-1-3) methods for calculating the distortional buckling (bifurcation) load of cold-formed steel-lipped…”
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Contribution to excitonic linewidth from free carrier–exciton scattering in layered materials: the example of hBN
Published in Applied sciences (01-08-2022)“…Scattering of excitons by free carriers is a phenomenon, which is especially important when considering moderately to heavily doped semiconductors in…”
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Terahertz response of patterned epitaxial graphene
Published in New journal of physics (27-05-2015)“…We study the interaction between polarized terahertz (THz) radiation and micro-structured large-area graphene in transmission geometry. In order to efficiently…”
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