Electrically driven long-range solid-state amorphization in ferroic In2Se3

Modi, G and Parate, SK and Kwon, C and Meng, AC and Khandelwal, U and Tullibilli, A and Horwath, J and Davies, PK and Stach, EA and Li, J and Nukala, P and Agarwal, R (2024) Electrically driven long-range solid-state amorphization in ferroic In2Se3. In: Nature .

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Abstract

Electrically induced amorphization is uncommon and has so far been realized by pulsed electrical current in only a few material systems, which are mostly based on the melt�quench process1. However, if the melting step can be avoided and solid-state amorphization can be realized electrically, it opens up the possibility for low-power device applications2�5. Here we report an energy-efficient, unconventional long-range solid-state amorphization in a new ferroic β�-phase of indium selenide nanowires through the application of a direct-current bias rather than a pulsed electrical stimulus. The complex interplay of the applied electric field perpendicular to the polarization, current flow parallel to the van der Waals layer and piezoelectric stress results in the formation of interlayer sliding defects and coupled disorder induced by in-plane polarization rotation in this layered material. On reaching a critical limit of the electrically induced disorder, the structure becomes frustrated and locally collapses into an amorphous phase6, and this phenomenon is replicated over a much larger microscopic-length scale through acoustic jerks7,8. Our work uncovers previously unknown multimodal coupling mechanisms of the ferroic order in materials to the externally applied electric field, current and internally generated stress, and can be useful to design new materials and devices for low-power electronic and photonic applications. © The Author(s), under exclusive licence to Springer Nature Limited 2024. Energy-efficient, solid-state amorphization of indium selenide nanowires is achieved using direct current, avoiding the melt�quench process. © The Author(s), under exclusive licence to Springer Nature Limited 2024..

Item Type:	Journal Article
Publication:	Nature
Publisher:	Nature Research
Additional Information:	The copyright for this article belongs to publisher.
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	26 Nov 2024 11:53
Last Modified:	26 Nov 2024 11:53
URI:	http://eprints.iisc.ac.in/id/eprint/86906

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