Zobrazeno 1 - 10
of 329
pro vyhledávání: '"Stephan Roche"'
Autor:
Ramon Aguado, Alba Cervera-Lierta, Antonio Correia, Silvano de Franceschi, Ricardo Diez Muiño, Juan José Garcia Ripoll, Alfredo Levi-Yeyati, Gloria Platero, Stephan Roche, Daniel Sanchez-Portal
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-4 (2023)
Despite only being its 3rd edition, the QUANTUM MATTER international conference & expo (QUANTUMatter) has already become a reference event for communities involved in the study of quantum materials, quantum information and quantum technologies at lar
Externí odkaz:
https://doaj.org/article/61f333136b054203ae13f9975b6f3008
Publikováno v:
Journal of Physics Communications, Vol 8, Iss 7, p 071001 (2024)
In the context of the measurement problem, we propose to model the interaction between a quantum particle and an ‘apparatus’ through a non-Hermitian Hamiltonian term. We simulate the time evolution of a normalized quantum state split into two spi
Externí odkaz:
https://doaj.org/article/2840d1732440471f9fa7d03d99913991
Autor:
Thomas Galvani, Ali K Hamze, Laura Caputo, Onurcan Kaya, Simon M-M Dubois, Luigi Colombo, Viet-Hung Nguyen, Yongwoo Shin, Hyeon-Jin Shin, Jean-Christophe Charlier, Stephan Roche
Publikováno v:
JPhys Materials, Vol 7, Iss 3, p 035003 (2024)
We report a theoretical study of dielectric properties of models of amorphous Boron Nitride, using interatomic potentials generated by machine learning. We first perform first-principles simulations on small (about 100 atoms in the periodic cell) sam
Externí odkaz:
https://doaj.org/article/4cdfa261755148208846d69f12cb0f5a
Autor:
Onurcan Kaya, Luigi Colombo, Aleandro Antidormi, Marco A Villena, Mario Lanza, Ivan Cole, Stephan Roche
Publikováno v:
JPhys Materials, Vol 7, Iss 2, p 025010 (2024)
Interconnect materials with ultralow dielectric constant, and good thermal and mechanical properties are crucial for the further miniaturization of electronic devices. Recently, it has been demonstrated that ultrathin amorphous boron nitride (aBN) fi
Externí odkaz:
https://doaj.org/article/c7e046f64ae941e3b2e20106a38d1b1a
Publikováno v:
Nano Materials Science, Vol 4, Iss 1, Pp 10-17 (2022)
We review recent developments on the synthesis and properties of two-dimensional materials which, although being mainly of an sp2 bonding character, exhibit highly disordered, non-uniform and structurally random morphologies. The emergence of such cl
Externí odkaz:
https://doaj.org/article/ad9d1270901044e7b1056e1a4a0a9aed
Autor:
Gwangwoo Kim, Kyung Yeol Ma, Minsu Park, Minsu Kim, Jonghyuk Jeon, Jinouk Song, José Eduardo Barrios-Vargas, Yuta Sato, Yung-Chang Lin, Kazu Suenaga, Stephan Roche, Seunghyup Yoo, Byeong-Hyeok Sohn, Seokwoo Jeon, Hyeon Suk Shin
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Here, the authors explore the blue photoluminescence signal arising from the interface between graphene and h-BN arranged in in-plane heterostructures, and fabricate a blue light emitting device utilizing the heterojunction as the emitting layer.
Externí odkaz:
https://doaj.org/article/8e223e9691cd40f8a76a4d6daafe587e
Autor:
Regina Galceran, Bo Tian, Junzhu Li, Frédéric Bonell, Matthieu Jamet, Céline Vergnaud, Alain Marty, Jose H. García, Juan F. Sierra, Marius V. Costache, Stephan Roche, Sergio O. Valenzuela, Aurélien Manchon, Xixiang Zhang, Udo Schwingenschlögl
Publikováno v:
APL Materials, Vol 9, Iss 10, Pp 100901-100901-20 (2021)
The interconversion between spin and charge degrees of freedom offers incredible potential for spintronic devices, opening routes for spin injection, detection, and manipulation alternative to the use of ferromagnets. The understanding and control of
Externí odkaz:
https://doaj.org/article/f7a436c75c5a45538654f5067a450145
Autor:
Johannes Aprojanz, Stephen R. Power, Pantelis Bampoulis, Stephan Roche, Antti-Pekka Jauho, Harold J. W. Zandvliet, Alexei A. Zakharov, Christoph Tegenkamp
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Electronic highways were realized by means of epitaxially grown graphene nanoribbons on SiC substrates. Here, the authors use spatially-resolved two-point probe and conductive AFM measurements, supplemented by tight-binding calculations, to image the
Externí odkaz:
https://doaj.org/article/a8438a0cd2bb455a8cee23aad923eb5c
Autor:
Marc Vila, Chuang-Han Hsu, Jose H. Garcia, L. Antonio Benítez, Xavier Waintal, Sergio O. Valenzuela, Vitor M. Pereira, Stephan Roche
Publikováno v:
Physical Review Research, Vol 3, Iss 4, p 043230 (2021)
The spin polarization induced by the spin Hall effect (SHE) in thin films typically points out of the plane. This is rooted on the specific symmetries of traditionally studied systems, not in a fundamental constraint. Recently, experiments on few-lay
Externí odkaz:
https://doaj.org/article/59eacd0487b340d39d0fb0e701c0064a
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017)
Nonlocal resistances in graphene Hall bars attributed to neutral current Hall effects have been mainly measured at the microscale. Here, the authors observe consistently strong nonlocal signals in Hall bars with channel length ranging from the microm
Externí odkaz:
https://doaj.org/article/680a4ace04b64d3cb051081d9b52ac76