Direct Observation of Nanoscale Peltier and Joule Effects at Metal–Insulator Domain Walls in Vanadium Dioxide Nanobeams

• Published in: Nano letters Vol. 14; no. 5; pp. 2394 - 2400
• Main Authors: Favaloro, Tela, Suh, Joonki, Vermeersch, Bjorn, Liu, Kai, Gu, Yijia, Chen, Long-Qing, Wang, Kevin X, Wu, Junqiao, Shakouri, Ali
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 14.05.2014
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Domain walls; Electron states; Exact sciences and technology; Insulators; Joule heating; Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties; Materials science; Metal-insulator transitions and other electronic transitions; Microscopy; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Nanostructure; Phase boundaries; Physics; Quantum wires; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Vanadium dioxide; Vanadium oxides; thermoreflectance microscopy; Vanadium dioxide; Peltier effect; Joule heating; metal−insulator domain wall; Temperature distribution; Metal-insulator transition; Domain walls; Nanostructures; Monoclinic lattices; Heat treatments; Interfaces; Nanometer scale; Monocrystals; Stress effects; Polarity; Band offset; Nanowires; Nanostructured materials; Crystal structure

The metal to insulator transition (MIT) of strongly correlated materials is subject to strong lattice coupling, which brings about the unique one-dimensional alignment of metal–insulator (M–I) domains along nanowires or nanobeams. Many studies have investigated the effects of stress on the MIT and h...