Charge redistribution at YBa2Cu3O7-metal interfaces

Disorder-controlled superconductivity at YBa2Cu3O7/SrTiO3 interfaces

J. Garcia-Barriocanal,1 A. M. Perez-Muñoz,1,2 Z. Sefrioui,1 D. Arias,1,3 M. Varela,1,4 C. Leon,1 S. J. Pennycook,4 and J. Santamaria1 1GFMC. Dpto. Fisica Aplicada III, Universidad Complutense de Madrid, 28040 Madrid, Spain 2CEI Campus Moncloa, UCM-UPM, 28040 Madrid, Spain 3Grupo de Materiales Magnéticos y Nanoestructuras, Universidad del Quindı́o, Armenia, Spain 4Materials Science & Technology D...

Induced Ferromagnetism at BiFeO3/YBa2Cu3O7 Interfaces

Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new functionalities can arise, which are absent in individual components. Here, we report results from first-principles calculations on the magnetism at the BiFeO3/YBa2...

Atypical charge redistribution over a charge- transfer monolayer on a metal

We report an atypical charge distribution in a highly ordered monolayer of sodium (Na) and tetracyanoquinodimethane (TCNQ) on a Au(111) surface. Na atoms incorporated in the charge-transfer layer donate their 3s electron to the lowest unoccupied orbital of the TCNQ acceptor. A fingerprint of such a TCNQ anion is observed in scanning tunneling spectroscopy as a zero-bias peak characteristic of t...

Image-charge-induced localization of molecular orbitals at metal-molecule interfaces Self-consistent GW calculations

Charge-transfer-induced structural rearrangements at both sides of organic/metal interfaces.

Organic/metal interfaces control the performance of many optoelectronic organic devices, including organic light-emitting diodes or field-effect transistors. Using scanning tunnelling microscopy, low-energy electron diffraction, X-ray photoemission spectroscopy, near-edge X-ray absorption fine structure spectroscopy and density functional theory calculations, we show that electron transfer at t...