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Striped nanoscale phase separation at the metal-insulator transition of heteroepitaxial nickelates.
Mattoni, G; Zubko, P; Maccherozzi, F; van der Torren, A J H; Boltje, D B; Hadjimichael, M; Manca, N; Catalano, S; Gibert, M; Liu, Y; Aarts, J; Triscone, J-M; Dhesi, S S; Caviglia, A D.
Afiliación
  • Mattoni G; Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, Netherlands.
  • Zubko P; London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, 17-19 Gordon Street, London WC1H 0HA, UK.
  • Maccherozzi F; Diamond Light Source, Harwell Science and Innovation Campus, Chilton OX11 0DE, UK.
  • van der Torren AJ; Kamerlingh Onnes-Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, Netherlands.
  • Boltje DB; Kamerlingh Onnes-Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, Netherlands.
  • Hadjimichael M; London Centre for Nanotechnology and Department of Physics and Astronomy, University College London, 17-19 Gordon Street, London WC1H 0HA, UK.
  • Manca N; Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, Netherlands.
  • Catalano S; Département de Physique de la Matière Quantique, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Genève 4, Switzerland.
  • Gibert M; Département de Physique de la Matière Quantique, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Genève 4, Switzerland.
  • Liu Y; Diamond Light Source, Harwell Science and Innovation Campus, Chilton OX11 0DE, UK.
  • Aarts J; Kamerlingh Onnes-Huygens Laboratory, Leiden University, P.O. Box 9504, 2300 RA Leiden, Netherlands.
  • Triscone JM; Département de Physique de la Matière Quantique, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Genève 4, Switzerland.
  • Dhesi SS; Diamond Light Source, Harwell Science and Innovation Campus, Chilton OX11 0DE, UK.
  • Caviglia AD; Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, Netherlands.
Nat Commun ; 7: 13141, 2016 11 02.
Article en En | MEDLINE | ID: mdl-27804954
Nucleation processes of mixed-phase states are an intrinsic characteristic of first-order phase transitions, typically related to local symmetry breaking. Direct observation of emerging mixed-phase regions in materials showing a first-order metal-insulator transition (MIT) offers unique opportunities to uncover their driving mechanism. Using photoemission electron microscopy, we image the nanoscale formation and growth of insulating domains across the temperature-driven MIT in NdNiO3 epitaxial thin films. Heteroepitaxy is found to strongly determine the nanoscale nature of the phase transition, inducing preferential formation of striped domains along the terraces of atomically flat stepped surfaces. We show that the distribution of transition temperatures is a local property, set by surface morphology and stable across multiple temperature cycles. Our data provide new insights into the MIT of heteroepitaxial nickelates and point to a rich, nanoscale phenomenology in this strongly correlated material.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2016 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Qualitative_research Idioma: En Revista: Nat Commun Asunto de la revista: BIOLOGIA / CIENCIA Año: 2016 Tipo del documento: Article País de afiliación: Países Bajos Pais de publicación: Reino Unido