Article
Chemistry, Multidisciplinary
Khalid Quertite, Hanna Enriquez, Nicolas Trcera, Yongfeng Tong, Azzedine Bendounan, Andrew J. Mayne, Gerald Dujardin, Pierre Lagarde, Abdallah El Kenz, Abdelilah Benyoussef, Yannick J. Dappe, Abdelkader Kara, Hamid Oughaddou
Summary: The authors reported the first experimental evidence of silicene nanoribbons on an insulating NaCl thin film, representing a major breakthrough in studying the intrinsic properties of silicene and other 2D materials grown on metal surfaces.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Nanoscience & Nanotechnology
S. Colonna, R. Flammini, F. Ronci
Summary: This paper reviews the research activity of the author's group in the field of silicene synthesis and properties, focusing on the interaction between silicon deposition and silicon substrate, and discussing the debated formation of silicene from unsaturated silicon compounds.
Article
Chemistry, Physical
Guangyuan Han, Huan Shan, Lizhi Zhang, Wenpeng Xu, Zhao-Yan Gao, Hui Guo, Geng Li, Hong-Jun Gao
Summary: Twisted graphene/silicene bilayers have been successfully constructed on Ru (0001) crystal via intercalation, providing a new pathway towards the construction of graphene-based twisted heterobilayers.
Article
Chemistry, Physical
Filippo Fabbri, Manuela Scarselli, Naveen Shetty, Sergey Kubatkin, Samuel Lara-Avila, Mathieu Abel, Isabelle Berbezier, Holger Vach, Matteo Salvato, Maurizio De Crescenzi, Paola Castrucci
Summary: Epitaxial graphene has been proven to be an excellent substrate for synthesizing two-dimensional materials. Silicene, a highly anticipated material, has been successfully grown on a slightly defective epitaxial graphene network, opening possibilities for controlled intercalation of silicon atoms and future nanotechnology applications.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yi-Ying Sung, Harmina Vejayan, Christopher J. Baddeley, Neville V. Richardson, Federico Grillo, Renald Schaub
Summary: On-surface synthesis with designer precursor molecules is an effective method for preparing graphene nanoribbons (GNRs) with tunable electronic properties. The band gap of GNRs doped with heteroatoms remains unchanged, but hydrogenation can engineer a tunable band gap. Surface-confined hydrogenation studies on 7-armchair GNRs grown on Au(111) surfaces reveal a self-limited hydrogenation process. The electronic properties of the GNR/Au(111) system can be modified by edge and basal-plane hydrogenation, and a mechanism for the hydrogenation process is proposed.
Article
Chemistry, Physical
Karsten Lucht, Karina Morgenstern
Summary: The study reveals that functionalized azobenzene molecules form water-azobenzene complexes in the presence of water, which prefer linear arrangements mediated by functionalized end groups. These complexes can serve as model systems for investigating the influence of a solvent on surface reactions.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Multidisciplinary Sciences
Alexander Kerelsky, Carmen Rubio-Verdu, Lede Xian, Dante M. Kennes, Dorri Halbertal, Nathan Finney, Larry Song, Simon Turkel, Lei Wang, Kenji Watanabe, Takashi Taniguchi, James Hone, Cory Dean, Dmitri N. Basov, Angel Rubio, Abhay N. Pasupathy
Summary: This study demonstrates the formation of emergent correlated phases in multilayer rhombohedral graphene without the need for twisted van der Waals layers. The study shows that two layers of bilayer graphene twisted by a tiny angle can host large regions of uniform rhombohedral four-layer graphene with a sharp van Hove singularity. Furthermore, the study suggests that the broken symmetry state in ABCA graphene could be attributed to a charge-transfer excitonic insulator or a ferrimagnet.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
V. Carnevali, A. Sala, P. Biasin, M. Panighel, G. Comelli, M. Peressi, C. Africh
Summary: The electronic properties of graphene can be modified by local interaction with a metal substrate. This article proposes a reliable method of evaluating the interaction between graphene and substrate by testing the tunneling current. This method expands the capabilities of standard STM systems for studying graphene/substrate complexes.
Article
Chemistry, Multidisciplinary
Daniel J. Rizzo, Sara Shabani, Bjarke S. Jessen, Jin Zhang, Alexander S. McLeod, Carmen Rubio-Verdu, Francesco L. Ruta, Matthew Cothrine, Jiaqiang Yan, David G. Mandrus, Stephen E. Nagler, Angel Rubio, James C. Hone, Cory R. Dean, Abhay N. Pasupathy, D. N. Basov
Summary: The researchers successfully created nanometer-scale lateral p-n junctions using graphene/alpha-RuCl3 heterostructure near graphene nanobubbles. Through STM/STS and s-SNOM techniques, they investigated the electronic and optical responses of nanobubble p-n junctions, achieving p-n junctions with a width of around 3 nm and an electric field of approximately 10(8) V/m. The study also utilized ab initio density functional theory calculations to corroborate experimental data and provide insights into charge transfer mechanisms in 2D materials.
Review
Chemistry, Multidisciplinary
Wenbing Peng, Haolin Wang, Hui Lu, Lei Yin, Yue Wang, Bruno Grandidier, Deren Yang, Xiaodong Pi
Summary: Understanding the band alignment, interface states, interface coupling, and carrier transport properties of semiconductor heterojunctions (SHs) is crucial for designing and fabricating semiconductor structures and devices. STM and STS have played significant roles in studying the properties of SHs, such as spatial structures and electronic band structures, to propose mechanisms for carrier transport.
Article
Chemistry, Multidisciplinary
Huimin Zhang, Qiang Zou, Lian Li
Summary: The study revealed the presence of helical edge states in FeSe multilayer films, with density of states following a power law characteristic of Tomonaga-Luttinger liquid, and corresponding Luttinger parameters of 0.26 and 0.43 at the {100}Se and {110}Se edges respectively. These results demonstrate strong correlations and nontrivial excitations in FeSe, providing insights into topological properties and novel phenomena in helical edge channels.
Article
Physics, Multidisciplinary
M. Omidian, J. Brand, N. Neel, S. Crampin, J. Kroeger
Summary: Epitaxially grown Fe nanostructures on Pb(111) were studied using low-temperature scanning tunneling microscopy and spectroscopy. The Fe assemblies were categorized into two groups based on their electronic behavior near the Fermi energy. One group exhibited a metallic behavior with a wide energy gap of 0.7 eV that remained temperature-independent. These Fe islands lacked the superconductivity proximity effect in their interior. The other group displayed a metallic behavior at the Fermi level, with the substrate superconducting phase locally entering these islands, evidenced by sharp resonance at the Fermi energy indicating possible Andreev reflection at the magnet-superconductor interface.
NEW JOURNAL OF PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Meng-Kai Lin, Guan-Hao Chen, Ciao-Lin Ho, Wei-Chen Chueh, Joseph Andrew Hlevyack, Chia-Nung Kuo, Tsu-Yi Fu, Juhn-Jong Lin, Chin Shan Lue, Wen-Hao Chang, Noriaki Takagi, Ryuichi Arafune, Tai-Chang Chiang, Chun-Liang Lin
Summary: Monolayer transition metal dichalcogenides show tunability in electronic properties, with bandgap modulation possible through control of tunneling current. Monolayer PtTe2 exhibits a reversible semiconductor-to-metal transition at moderate tunneling current, attributed to its surface electronic structure coupling with the tunneling tip.
Article
Chemistry, Physical
Yunyan Zhang, H. Aruni Fonseka, Hui Yang, Xuezhe Yu, Pamela Jurczak, Suguo Huo, Ana M. Sanchez, Huiyun Liu
Summary: Embedding quantum dots on nanowire sidewalls enhances light emission/absorption, but the curved surface of nanowires makes growth challenging. The {110} sidewall facets of self-catalyzed nanowires favor 2D growth, making 3D growth difficult. In this study, a novel thermally-driven growth method was developed, which allows defect-free growth of lattice-matched Ge dots on the sidewall facets of thin self-catalyzed GaAs nanowires without surfactant or surface treatment. This method opens up new possibilities for integrating quantum dots on nanowires and enables growth in materials systems where traditional mechanisms are not possible.
NANOSCALE HORIZONS
(2022)
Article
Chemistry, Multidisciplinary
Felix D. Goll, Gerhard Taubmann, Ulrich Ziener
Summary: Supramolecular polymerization of a donor-acceptor bisterpyridine (BTP) equipped with an electron-rich carbazole unit is observed at the HOPG|solution interface. Two-dimensional crystals of supramolecular (co)polymers are formed by chain growth polymerization, which can be described by copolymerization statistics. A mechanism for self-assembly is developed based on concentration-dependent measurements and DFT calculations, suggesting a kinetically driven polymerization process combined with thermodynamically controlled crystallization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Instruments & Instrumentation
F. Ghiorghiu, M. Minissale, E. A. Hodille, C. Grisolia, T. Angot, R. Bisson
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2019)
Article
Physics, Fluids & Plasmas
C. Pardanaud, D. Dellasega, M. Passoni, C. Martin, P. Roubin, Y. Addab, C. Arnas, L. Couedel, M. Minissale, E. Salomon, G. Giacometti, A. Merlen, E. Bernard, R. Mateus, E. Alves, Z. Siketic, I. Bogdanovic Radovic, A. Hakola
Article
Chemistry, Physical
M. Minissale, J-B Faure, A. Dunand, T. Angot, G. De Temmerman, R. Bisson
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Eric Salomon, Marco Minissale, Francisco Romero Lairado, Stephane Coussan, Pierre Rousselot-Pailley, Francois Dulieu, Thierry Angot
Summary: This study demonstrates that despite the high vapor pressure, pyrene molecules can form ordered films on a Ag(111) surface, exhibiting similar adsorption properties to pristine pyrene. The experimental results indicate that under ultrahigh vacuum conditions, the adsorbed molecules behave as a physisorbed system with weak interactions between the molecules and the substrate.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Review
Optics
F. Taccogna, S. Bechu, A. Aanesland, P. Agostinetti, R. Agnello, S. Aleiferis, T. Angot, V Antoni, M. Bacal, M. Barbisan, J. Bentounes, A. Bes, M. Capitelli, G. Cartry, M. Cavenago, R. Celiberto, G. Chitarin, R. Delogu, A. De Lorenzi, F. Esposito, M. Fadone, N. Ferron, G. Fubiani, I Furno, L. Gavilan, P. Guittienne, A. Howling, R. Jacquier, A. Laricchiuta, J. M. Layet, J. L. Lemaire, S. Longo, B. Maurice, P. Minelli, M. Minissale, M. Mitrou, R. Moussaoui, A. Pimazzoni, C. Poggi, D. Rafalskyi, E. Salomon, E. Sartori, M. Sasao, G. Serianni, E. Spada, S. Suweis, P. Svarnas, L. Tahri, M. Ugoletti, V. Variale, P. Veltri
Summary: This review summarizes the latest updates on caesium-free negative ion sources presented during the 63rd Course of the International school of Quantum Electronics of the Ettore Majorana Foundation and European collaborative works. It addresses both theoretical and experimental work performed in the last few years, as well as the complexities involved in the conception of a negative ion source.
EUROPEAN PHYSICAL JOURNAL D
(2021)
Article
Physics, Fluids & Plasmas
F. Ghiorghiu, T. Aissou, M. Minissale, T. Angot, G. De Temmerman, R. Bisson
Summary: A systematic study on nitrogen retention and ammonia production on tungsten, along with the mechanism for ammonia formation on ITER's divertor material, was reported. The research revealed the temperature range and kinetics of nitrogen desorption, as well as the optimal conditions for significant ammonia production. The study also demonstrated the negligible nitrogen diffusion to the surface during ammonia production and the presence of ammonia precursors on the nitrogen-implanted tungsten surface.
Article
Physics, Fluids & Plasmas
A. Dunand, M. Minissale, J-B Faure, L. Gallais, T. Angot, R. Bisson
Summary: We compare the retention and release of deuterium in tungsten with and without the presence of oxygen impurities. We find that the location of deuterium retention varies in different surface states of tungsten. These findings are important for understanding the temperature dependence of deuterium desorption rate and fusion fuel recycling coefficient.
Review
Crystallography
Marco Minissale, Eric Salomon, Federica Pappalardo, Celine Martin, Matthias Muntwiler, Thierry Angot, Guy Le Lay
Summary: Germanene, an artificial graphene-like material, shows topological insulator properties at room temperature and is compatible with silicon technology, making it a promising candidate for nanoelectronics. Researchers prepared germanene using dry epitaxy on metal surfaces and studied its predicted electronic properties. They also investigated the growth of germanene using a bottom-up synthesis strategy on a gold thin film supported by germanium, resulting in monolayer germanene with Dirac fermions.
Article
Chemistry, Multidisciplinary
Fatima Hussein, Corentin Pigot, Francisco Romero Lairado, Marco Minissale, Eric Salomon, Thierry Angot, Frederic Dumur, Malek Nechab, Didier Gigmes, Sylvain Clair, Luca Giovanelli
Summary: On-surface synthesis is an important tool for building covalently bonded molecular nanostructures and offers new synthetic pathways. This study investigates the adsorption behavior of a chiral molecule on a metal surface, demonstrating the formation of low-dimensional structures through activated homocoupling reactions and showcasing adsorption-induced chiral inversion.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Yasmine Sassa, Fredrik O. L. Johansson, Andreas Lindblad, Milad G. Yazdi, Konstantin Simonov, Jonas Weissenrieder, Matthias Muntwiler, Fadil Iyikanat, Hasan Sahin, Thierry Angot, Eric Salomon, Guy Le Lay
APPLIED SURFACE SCIENCE
(2020)
Article
Physics, Multidisciplinary
Mykola Ialovega, Elodie Bernard, Regis Bisson, Celine Martin, Ryuichi Sakamoto, Arkadi Kreter, Etienne Hodille, Thierry Angot, Christian Grisolia
Article
Physics, Fluids & Plasmas
X. Yang, D. Kogut, L. Couedel, T. Angot, P. Roubin, J-B Faure, G. Cartry
Summary: The study investigates the surface loss of hydrogen and deuterium atoms on quartz surfaces in a low-pressure pulsed inductively coupled plasma. Despite similar surface loss probabilities, hydrogen atoms diffuse faster and are lost at a higher rate compared to deuterium atoms, due to the mass difference between the isotopes. Discussions on isotopic effects on H and D atom production are based on observed isotopic differences and comparisons between H and D TALIF signals.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
