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Title: PT-symmetry enabled spintronic thermal diodes and logic gates
Author(s): Wang, Xi-guang
Guo, Guang-hua
Berakdar, JamalLook up in the Integrated Authority File of the German National Library
Issue Date: 2023
Type: Article
Language: English
Abstract: Devices for performing computation and logic operations with low-energy consumption are of key importance for environmentally friendly data processing and information technology. Here, a design for magnetic elements that use excess heat to perform logic operations is presented. The basic information channel is coupled non-conductive magnetic stripes with a normal metal spacer. The thermal information signal is embodied in magnetic excitations and it can be transported, locally enhanced, and controllably steered by virtue of charge current pulses in the spacer. Functionality of essential thermal logic gates is demonstrated by material-specific simulations. The operation principle takes advantage of the special material architecture with a balanced gain/loss mechanism for magnetic excitation which renders the circuit parity-time symmetric with exceptional points tunable by the current strength in the spacer. Heat flow at these points can be enhanced, be non-reciprocal, or may oscillate between the information channels enabling controlled thermal diode and thermal gate operations. The findings point to a new route for exploiting heat for useful work on the nanoscale.
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Journal Title: Advanced electronic materials
Publisher: Wiley-VCH Verlag GmbH & Co. KG
Publisher Place: Weinheim
Volume: 9
Issue: 12
Page Start: 1
Page End: 10
Appears in Collections:Open Access Publikationen der MLU