ASEVA is a non-profit organization founded on 1963 as a specialised working group of the Spanish Committee of the International Union of Pure and Applied Physics (IUPAP). Currently, ASEVA is a member of the IUVSTA (International Union for Vacuum Science, Technique and Applications), where it participates actively.
Highligted Scientific Contributions from Our Members:
Unveiling the Neutral Forms of Glutamine
Author: Iker León, Elena R. Alonso, Santiago Mata, Carlos Cabezas, Prof. Jose Luis Alonso
Neutral glutamine has been evaporated by laser ablation of its solid sample to seed a rare gas carrier prior to a supersonic expansion and proved by Fourier transform microwave techniques. We report on three distinct neutral conformers that show a….
Reversible graphene decoupling by NaCl photo-dissociation
Author: I Palacio, L Aballe, M Foerster, D G de Oteyza, M García-Hernández and J A Martín-Gago
( , , 22019)
We describe the reversible intercalation of Na under graphene on Ir(1 1 1) by photo-dissociation of a previously adsorbed NaCl overlayer. After room temperature evaporation, NaCl adsorbs on top of graphene forming a bilayer. With a combination of electron diffraction and photoemission….
Identifying substitutional oxygen as a prolific point defect in monolayer transition metal dichalcogenides
Author: Sara Barja, Sivan Refaely-Abramson, Bruno Schuler, Diana Y. Qiu, Artem Pulkin, Sebastian Wickenburg, Hyejin Ryu, Miguel M. Ugeda, Christoph Kastl, Christopher Chen, Choongyu Hwang, Adam Schwartzberg, Shaul Aloni, Sung-Kwan Mo, D. Frank Ogletree, Michael F. Crommie, Oleg V. Yazyev, Steven G. Louie, Jeffrey B. Neaton & Alexander Weber-Bargioni
Nature Communications volume 10, Article number: 3382 (2019)
Chalcogen vacancies are generally considered to be the most common point defects in transition metal dichalcogenide (TMD) semiconductors because of their low formation energy in vacuum and their frequent observation in transmission electron microscopy studies. Consequently….
Ultrastable CoxSiyOz Nanowires by Glancing Angle Deposition with Magnetron Sputtering as Novel Electrocatalyst for Water Oxidation
Author: Manuel Cano, Francisco J. Garcia‐Garcia, Daily Rodríguez‐Padrón, Dr. Agustín R. González‐Elipe, Juan J. Giner‐Casares, Dr. Rafael Luque
Chem Cat Chem (2019)
one of the most promising non‐noble metal as electrocatalyst for water oxidation. Herein, a highly stable silicon‐cobalt mixed oxide thin film with a porous columnar nanostructure is…
Experimental determination of surface thermal expansion and electron–phonon coupling constant of 1T-PtTe2
Author: Gloria Anemone, Manuela Garnica, Marilena Zappia, Pablo Casado Aguilar, Amjad Al Taleb, Chia-Nung Kuo, Chin Shan Lue, Antonio Politano, Giorgio Benedek, Amadeo L Vázquez de Parga
, , (2020)
We report an extensive structural characterization of the surface of 1T-PtTe2 crystals by means of helium atom scattering (HAS) and ultra-high resolution scanning tunnelling microscopy (STM). HAS reveals that this bi-dimensional surface presents a large structural corrugation….
A real-time XAS PEEM study of the growth of cobalt iron oxide on Ru(0001)
J. Chem. Phys. 152, 074704 (2020)
The growth of mixed cobalt-iron oxides on Ru(0001) by high-temperature oxygen-assisted molecular beam epitaxy has been monitored in real time and real space by x-ray absorption photoemission microscopy. The initial composition is a mixed…
Engineering nanostructured cell micropatterns on Ti6Al4V by selective ion-beam inhibition of pitting
Author: R.López, M.D.Ynsa, P.J.de Pablo, F.Lim, M.Manso Silván
Corrosion Science. 9 February 2020, 108528
We have modified Ti6Al4V at the micro and nanoscale by using ion beam irradiation with 5 MeV Si+ ions through 1D micromasks. The passivation layer on irradiated areas inhibits hydrofluoric acid induced etching, leading to pitting contrasts…
Band Depopulation of Graphene Nanoribbons Induced by Chemical Gating with Amino Groups
Author: Jingcheng Li, Pedro Brandimarte, Manuel Vilas-Varela, Nestor Merino-Díez, Cesar Moreno, Aitor Mugarza, Jaime Sáez Mollejo, Daniel Sánchez-Portal, Dimas Garcia de Oteyza, Martina Corso, Aran Garcia-Lekue, Diego Peña, Jose Ignacio Pascual.
ACS Nano 2020, 14, 2, 1895-1901.
The electronic properties of graphene nanoribbons (GNRs) can be precisely tuned by chemical doping. Here we demonstrate that amino (NH2) functional groups attached at the edges of chiral GNRs (chGNRs) can efficiently gate the chGNRs…
Nanoarquitecturas de grafeno con precisión atómica
Author: Cesar Moreno Sierra, Ara García-Lekue, Aitor Mugarza
Revista Española de Física. Vol 33, No 4 (2019)
La síntesis de arquitecturas covalentes en superficie y con precisión atómica se ha erigido como uno de los métodos más prometedores para dotar de nuevas funcionalidades al grafeno, un material ya de por si superlativo en múltiples aspectos…