Memristive devices can offer dynamic behaviour, analogue
programmability, and scaling and integration capabilities. As a result, they
are of potential use in the development of information processing and
storage devices for both conventional and unconventional computing
paradigms. Their memristive switching processes originate mainly from
the modulation of the number and position of structural defects or
compositional impurities—what are commonly referred to as imperfections.
While the underlying mechanisms and potential applications of memristors
based on traditional bulk materials have been extensively studied,
memristors based on van der Waals materials have only been considered
more recently. Here we examine imperfection-enabled memristive
switching in van der Waals materials. We explore how imperfections—
together with the inherent physicochemical properties of the van der Waals
materials—create different switching mechanisms, and thus provide a range
of opportunities to engineer switching behaviour in memristive devices.
We also discuss the challenges involved in terms of material selection,
mechanism investigation and switching uniformity control, and consider
the potential of van der Waals memristors in system-level implementations
of efficient computing technologies.
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This content will become publicly available on May 1, 2025
Van der Waals opto-spintronics
Van der Waals materials with long-range magnetic order show a range of correlated phenomena that could be of use in the development of optoelectronic and spintronic applications. Magnetically ordered van der Waals semiconductors with spin-polarized currents are, in particular, sensitive to external stimuli such as strain, electrostatic fields, magnetic fields and electromagnetic radiation. Their combination of two-dimensional magnetic order, semiconducting band structure and weak dielectric screening means that these materials could be used to create novel atomically thin opto-spintronic devices. Here we explore the development of van der Waals opto-spintronics. We examine the interplay between optical, magnetic and electronic excitations in van der Waals magnetic semiconductors, and explore the control of their magnetization via external stimuli. We consider fabrication and passivation strategies for the practical handling and design of opto-spintronic devices. We also explore potential opto-spintronic device architectures and applications, which include magnonics, quantum transduction, neuromorphic computing and non-volatile memory.
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- Award ID(s):
- 2004420
- PAR ID:
- 10549803
- Publisher / Repository:
- Springer Nature
- Date Published:
- Journal Name:
- Nature Electronics
- Volume:
- 7
- Issue:
- 5
- ISSN:
- 2520-1131
- Page Range / eLocation ID:
- 336-347
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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