Long living carriers in a strong electron-phonon interacting two-dimensional doped semiconductor

Carrier doping by the electric field effect has emerged recently as an ideal route for monitoring many-body physics in two-dimensional (2D) materials where the Fermi level is tuned in a way that -- indirectly -- the strength of the interactions can also be scanned. The possibility of systematic doping in combination with high resolution photoemission has allowed to uncover a genuinely many-body electron spectrum in single-layer MoS2 transition metal dichalcogenide, resolving three clear quasi-particle states, where only one state should be expected if the electron-phonon interaction vanished. Our analysis combines first-principles and consistent complex plane analytic approaches and brings into light the presence and the physical origin of two gaps and the three quasi-particle bands which are unambiguously present in the photoemission spectrum. One of these states, though being strongly interacting with the accompanying virtual phonon cloud, presents a notably long lifetime which is an appealing property when trying to understand and take advantage of many-body interactions to modulate the transport properties.Comment: Editorially accepted for publication in "Communications Physics" (14 pages, 3 figures

Dahir berbère

Le 16 mai 1930, la France promulguait au Maroc un décret devenu célèbre : « Le Dahir Berbère ». Celui-ci fut rapidement considéré par tous les observateurs comme le catalyseur du nationalisme marocain, alors qu’il n’était, aux yeux des Français, qu’un dahir parmi tant d’autres. Cependant, les conditions politiques, économiques, psychologiques qui prévalaient lors de sa promulgation contribuèrent à susciter des réactions qui dépassèrent par leur violence tout ce que pouvaient en attendre les j..

Fundamental measure theory for lattice fluids with hard core interactions

We present the extension of Rosenfeld's fundamental measure theory to lattice models by constructing a density functional for d-dimensional mixtures of parallel hard hypercubes on a simple hypercubic lattice. The one-dimensional case is exactly solvable and two cases must be distinguished: all the species with the same lebgth parity (additive mixture), and arbitrary length parity (nonadditive mixture). At the best of our knowledge, this is the first time that the latter case is considered. Based on the one-dimensional exact functional form, we propose the extension to higher dimensions by generalizing the zero-dimensional cavities method to lattice models. This assures the functional to have correct dimensional crossovers to any lower dimension, including the exact zero-dimensional limit. Some applications of the functional to particular systems are also shown.Comment: 22 pages, 7 figures, needs IOPP LaTeX styles file

Many ways to make darker flies: Intra- and inter-specific variation in Drosophila body pigmentation components

Fundação para a Ciência e Tecnologia (FCT)info:eu-repo/semantics/submittedVersio

A fuzzy methodology for innovation management measurement

Innovation has been recognized as one of the main sources of competitive advantage for organizations and nations. The purpose of this study is to present an innovation management measurement approach applying fuzzy techniques to small and medium manufacturing enterprises. ..

Plan de acción frente al consumismo global de la Nueva Economía: Revelaciones sobre economía, empresa y consumo del s. XXI

Este estudio crítico y revisionista, de corte interdisciplinario (entre Humanidades y Ciencias Sociales), alerta sobre los peligros de avanzar hacia una sociedad masa global de consumo, donde se acentúe la deshumanización y asocialización, al primarse el tener al ser (el bienestar a la felicidad, el negocio al ocio, la empresa al oficio, la pulsión a la experiencia, etc.). Se ofrece así un plan de acción que va de lo más general (retirando los velos de confusión que impiden reconocer el mundo posglobalizado y estudiarlo tal como es), pasando a centrar la atención en las complejas reglas económicas y empresariales del nuevo milenio, para terminar evaluando los riesgos de la inautenticidad del actual consumidor.This is a critical and reviewer study, under an interdisciplinary approach (between Liberal Arts and Social Sciences), which warns to move on a global mass consumer society and its dangers, by the accentuated lost of humanity and sociality, because the priority of the having-issue than the been-issue (the preference of welfare than happiness, the business than the recreation, the company than the profession, the desire than the experience, etc.). The structure of the paper goes from general view (removing the confusion veils that make impossible the recognition of the post-globalized World and its study), to particular view (focusing on the complex economic and business rules in the new millennium), and the risk evaluation of the non-authenticity of the current consumer