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pro vyhledávání: '"A Fasel"'
Inelastic electron tunneling spectroscopy (IETS) is a powerful measurement technique often used in scanning tunneling spectroscopy to probe excited states of various nanostructures, e.g., the magnetic properties of complex spin systems. The observed
Externí odkaz:
http://arxiv.org/abs/2411.19670
Effectively controlling systems governed by Partial Differential Equations (PDEs) is crucial in several fields of Applied Sciences and Engineering. These systems usually yield significant challenges to conventional control schemes due to their nonlin
Externí odkaz:
http://arxiv.org/abs/2411.04098
Autor:
Kinikar, Amogh, Xu, Xiushang, Onishi, Takatsugu, Ortega-Guerrero, Andres, Widmer, Roland, Zema, Nicola, Hogan, Conor, Camilli, Luca, Persichetti, Luca, Pignedoli, Carlo A., Fasel, Roman, Narita, Akimitsu, Di Giovannantonio, Marco
Recent advances in nanomaterials have pushed the boundaries of nanoscale fabrication to the limit of single atoms (SAs), particularly in heterogeneous catalysis. Single atom catalysts (SACs), comprising minute amounts of transition metals dispersed o
Externí odkaz:
http://arxiv.org/abs/2409.13560
Autor:
Botteghi, Nicolò, Fasel, Urban
This document contains an educational introduction to the problem of sparsifying parametric models with L0 regularization. We utilize this approach together with dictionary learning to learn sparse polynomial policies for deep reinforcement learning
Externí odkaz:
http://arxiv.org/abs/2409.03489
Autor:
Zhao, Chenxiao, Yang, Lin, Henriques, João C. G., Ferri-Cortés, Mar, Catarina, Gonçalo, Pignedoli, Carlo A., Ma, Ji, Feng, Xinliang, Ruffieux, Pascal, Fernández-Rossier, Joaquín, Fasel, Roman
Haldane's seminal work established two fundamentally different types of excitation spectra for antiferromagnetic Heisenberg quantum spin chains: gapped excitations in integer-spin chains and gapless excitations in half-integer-spin chains. In finite-
Externí odkaz:
http://arxiv.org/abs/2408.10045
Autor:
Darawish, Rimah, Braun, Oliver, Muellen, Klaus, Calame, Michel, Ruffieux, Pascal, Fasel, Roman, Barin, Gabriela Borin
Graphene nanoribbons (GNRs) with atomically precise widths and edge topologies have well-defined band gaps that depend on ribbon dimensions, making them ideal for room-temperature switching applications like field-effect transistors (FETs). For effic
Externí odkaz:
http://arxiv.org/abs/2407.12646
Autor:
Catarina, Gonçalo, Turco, Elia, Krane, Nils, Bommert, Max, Ortega-Guerrero, Andres, Gröning, Oliver, Ruffieux, Pascal, Fasel, Roman, Pignedoli, Carlo A.
Publikováno v:
Nano Lett. 2024, 24, 12536-12544
Phenalenyl (C$_{13}$H$_9$) is an open-shell spin-$1/2$ nanographene. Using scanning tunneling microscopy (STM) inelastic electron tunneling spectroscopy (IETS), covalently-bonded phenalenyl dimers have been shown to feature conductance steps associat
Externí odkaz:
http://arxiv.org/abs/2407.11506
Autor:
Turco, Elia, Wu, Fupeng, Catarina, Gonçalo, Krane, Nils, Ma, Ji, Fasel, Roman, Feng, Xinliang, Ruffieux, Pascal
In the quest for high-spin building blocks to form covalently bonded 1D or 2D materials with controlled magnetic interactions, $\pi$-electron magnetism provides an ideal framework to engineer large ferromagnetic interactions between nanographenes. As
Externí odkaz:
http://arxiv.org/abs/2407.00728
Autor:
Romano, Francesco, Bars, Guillaume Le, Loizu, Joaquim, Nöel, Marc, Hogge, Jean-Philippe, Alberti, Stefano, Genoud, Jeremy, Antonioni, Severino, Naux, Lorraine, Giroud-Garampon, Pierrick, Couturier, Steve, Leresche, Thierry, Fasel, Damien
Gyrotrons are essential for electron cyclotron resonance heating (ECRH) in fusion reactors, making efficient operation crucial for advancing fusion energy. Past experiments revealed instability issues due to trapped electrons in the magnetron injecti
Externí odkaz:
http://arxiv.org/abs/2406.19123
Autor:
Kinikar, Amogh, Englmann, Thorsten G., Di Giovannantonio, Marco, Bassi, Nicolò, Xiang, Feifei, Stolz, Samuel, Widmer, Roland, Barin, Gabriela Borin, Turco, Elia, Díez, Néstor Merino, Eimre, Kristjan, Guerrero, Andres Ortega, Feng, Xinliang, Gröning, Oliver, Pignedoli, Carlo A., Fasel, Roman, Ruffieux, Pascal
Atomically precise graphene nanoribbons (GNRs) have a wide range of electronic properties that depend sensitively on their chemical structure. Several types of GNRs have been synthesized on metal surfaces through selective surface-catalyzed reactions
Externí odkaz:
http://arxiv.org/abs/2404.19389