| Affiliation: | [1]Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University,Singapore 637371; [2]Institut de Ciencia de Materials de Barcelona, ICMAB-CSIC, E-08193 Bellaterra, CAT, Spain; [3]Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106, USA; [4]Laboratorio de Microscopfas Avanzadas (LMA), Instituto de Nanociencia de Aragon (INA) - ARAID and Departamento de Fisica de la Materia Condensada, Universidad de Zaragoza, 50018 Zaragoza, Spain; [5]Institucio Catalana de Recerca i Estudis Avancats (ICREA), 08010 Barcelona, CAT, Spain; [6]NOVITAS, Nanoelectronics Centre of Excellence, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798 |
