In operando evidence of deoxygenation in ionic liquid gating of YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-X</SUB> - INSU - Institut national des sciences de l'Univers Accéder directement au contenu
Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2017

In operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-X

Ana M. Perez-Muñoz
  • Fonction : Auteur
Pedro Schio
  • Fonction : Auteur
Alberto Rivera-Calzada
  • Fonction : Auteur
Julio C. Cezar
  • Fonction : Auteur
Eduardo Salas-Colera
  • Fonction : Auteur
German R. Castro
  • Fonction : Auteur
Joseph Kinney
  • Fonction : Auteur
Carlos Leon
  • Fonction : Auteur
Jacobo Santamaria
  • Fonction : Auteur
Javier Garcia-Barriocanal
  • Fonction : Auteur
Allen M. Goldman
  • Fonction : Auteur

Résumé

In this work, we investigate the origin of the charge induced in a high-temperature superconducting cuprate film, incorporated in an electric double-layer transistor. Using X-ray spectroscopic measurements made while operating the transistor, together with simulations based on density functional theory, we find that the accumulated charge in the cuprate is due to the depletion of oxygen from specific sites in its unit cell. These results constitute direct evidence of the microscopic mechanism of charge modification. The systematic control of the oxygen content in complex oxides such as the cuprates allows for the study of complex phase diagrams and opens up a route for the design of new complex oxide compounds and devices with improved functionalities.

Dates et versions

insu-03691329 , version 1 (09-06-2022)

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Citer

Ana M. Perez-Muñoz, Pedro Schio, Roberta Poloni, Alejandro Fernandez-Martinez, Alberto Rivera-Calzada, et al.. In operando evidence of deoxygenation in ionic liquid gating of YBa2Cu3O7-X. Proceedings of the National Academy of Sciences of the United States of America, 2017, 114, pp.215-220. ⟨10.1073/pnas.1613006114⟩. ⟨insu-03691329⟩
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