Supporting data for Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3−δ films via room-temperature ion-gel gating
2023-04-19
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2021-11-01
2023-03-10
2023-03-10
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2023-03-10
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Supporting data for Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3−δ films via room-temperature ion-gel gating
Published Date
2023-04-19
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Wang, Xiaojia
wang4940@umn.edu
wang4940@umn.edu
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Abstract
These files contain data along with associated output from instrumentation supporting all results reported in Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-delta films via room-temperature ion-gel gating. Solid-state control of the thermal conductivity of materials is of exceptional interest for novel devices such as thermal diodes and switches. Here, we demonstrate the ability to continuously tune the thermal conductivity of nanoscale films of La0.5Sr0.5CoO3-delta (LSCO) by a factor of over 5, via a room-temperature electrolyte-gate-induced non-volatile topotactic phase transformation from perovskite (with ≈ 0.1) to an oxygen-vacancy-ordered brownmillerite phase (with = 0.5), accompanied by a metal-insulator transition. Combining time-domain thermoreflectance and electronic transport measurements, model analyses based on molecular dynamics and Boltzmann transport, and structural characterization by X-ray diffraction, we uncover and deconvolve the effects of these transitions on heat carriers, including electrons and lattice vibrations. The wide-range continuous tunability of LSCO thermal conductivity enabled by low-voltage (below 4 V) room-temperature electrolyte gating opens the door to non-volatile dynamic control of thermal transport in perovskite-based functional materials, for thermal regulation and management in device applications. Authors to whom correspondence should be addressed are Chris Leighton (leighton@umn.edu) and Xiaojia Wang (wang4940@umn.edu).
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The Excel file contains the data corresponding to the figures in the main paper and SI.
Referenced by
Zhang, Y., Postiglione, W.M., Xie, R. et al. Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3-δ films via room-temperature ion-gel gating. Nat Commun 14, 2626 (2023).
https://doi.org/10.1038/s41467-023-38312-z
https://doi.org/10.1038/s41467-023-38312-z
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National Science Foundation (NSF) through the UMN MRSEC under DMR-2011401
NSF, CBET-2212830
Office of Science of the DOE under Contract DE-AC02-05CH11231
U.S. Department of Energy (DOE) Office of Science, No. DE-AC02-06CH11357
NSF, through the National Nanotechnology Coordinated Infrastructure under ECCS-2025124
NSF, CBET-2212830
Office of Science of the DOE under Contract DE-AC02-05CH11231
U.S. Department of Energy (DOE) Office of Science, No. DE-AC02-06CH11357
NSF, through the National Nanotechnology Coordinated Infrastructure under ECCS-2025124
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Zhang, Yingying; Postiglione, William M; Xie, Rui; Zhang, Chi; Zhou, Hao; Chaturvedi, Vipul; Heltemes, Kei; Zhou, Hua; Feng, Tianli; Leighton, Chris; Wang, Xiaojia. (2023). Supporting data for Wide-range continuous tuning of the thermal conductivity of La0.5Sr0.5CoO3−δ films via room-temperature ion-gel gating. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/kjhp-az69.
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