Data di Pubblicazione:
2023
Citazione:
Unveiling the electronic structure of pseudo-tetragonal WO3 thin films / F. Mazzola, H. Hassani, D. Amoroso, S.K. Chaluvadi, J. Fujii, V. Polewczyk, P. Rajak, M. Koegler, R. Ciancio, B. Partoens, G. Rossi, I. Vobornik, P. Ghosez, A.P. Orgiani. - In: THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS. - ISSN 1948-7185. - 14:30(2023 Aug), pp. 7208-7214. [10.1021/acs.jpclett.3c01546]
Abstract:
WO3 is a 5d compound that undergoes several
structural transitions in its bulk form. Its versatility is well-
documented, with a wide range of applications, such as flexopiezoe-
lectricity, electrochromism, gating-induced phase transitions, and its
ability to improve the performance of Li-based batteries. The
synthesis of WO3 thin films holds promise in stabilizing electronic
phases for practical applications. However, despite its potential, the
electronic structure of this material remains experimentally unex-
plored. Furthermore, its thermal instability limits its use in certain
technological devices. Here, we employ tensile strain to stabilize WO3
thin films, which we call the pseudotetragonal phase, and investigate
its electronic structure using a combination of photoelectron
spectroscopy and density functional theory calculations. This study
reveals the Fermiology of the system, notably identifying significant energy splittings between different orbital manifolds arising from
atomic distortions. These splittings, along with the system’s thermal stability, offer a potential avenue for controlling inter- and
intraband scattering for electronic applications.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
F. Mazzola, H. Hassani, D. Amoroso, S.K. Chaluvadi, J. Fujii, V. Polewczyk, P. Rajak, M. Koegler, R. Ciancio, B. Partoens, G. Rossi, I. Vobornik, P. Ghosez, A.P. Orgiani
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