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Title: Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications

Abstract

In this article, we consider through simulation low-energy switching of nanomagnets via electrostatically gated inter-magnet Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions on the surface of three-dimensional topological insulators, for possible memory and nonvolatile logic applications. We model the possibility and dynamics of RKKY-based switching of one nanomagnet by coupling to one or more nanomagnets of set orientation. Potential applications to both memory and nonvolatile logic are illustrated. Sub-attojoule switching energies, far below conventional spin transfer torque (STT)-based memories and even below CMOS logic appear possible. Switching times on the order of a few nanoseconds, comparable to times for STT switching, are estimated for ferromagnetic nanomagnets, but the approach also appears compatible with the use of antiferromagnets which may allow for faster switching.

Authors:
; ; ;  [1]
  1. Microelectronics Research Center, University of Texas at Austin, 10100 Burnet Road, Bldg. 160, Austin, Texas 78758 (United States)
Publication Date:
OSTI Identifier:
22597822
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 120; Journal Issue: 3; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; ELECTRIC POTENTIAL; ELECTRICAL PROPERTIES; INTERACTIONS; MAGNETIC PROPERTIES; MAGNETS; RUDERMAN-KITTEL COUPLING; SPIN; SURFACES; THREE-DIMENSIONAL CALCULATIONS; TOPOLOGY

Citation Formats

Ghosh, Bahniman, E-mail: bghosh@utexas.edu, Dey, Rik, Register, Leonard F., and Banerjee, Sanjay K. Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications. United States: N. p., 2016. Web. doi:10.1063/1.4959089.
Ghosh, Bahniman, E-mail: bghosh@utexas.edu, Dey, Rik, Register, Leonard F., & Banerjee, Sanjay K. Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications. United States. doi:10.1063/1.4959089.
Ghosh, Bahniman, E-mail: bghosh@utexas.edu, Dey, Rik, Register, Leonard F., and Banerjee, Sanjay K. Thu . "Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications". United States. doi:10.1063/1.4959089.
@article{osti_22597822,
title = {Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications},
author = {Ghosh, Bahniman, E-mail: bghosh@utexas.edu and Dey, Rik and Register, Leonard F. and Banerjee, Sanjay K.},
abstractNote = {In this article, we consider through simulation low-energy switching of nanomagnets via electrostatically gated inter-magnet Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions on the surface of three-dimensional topological insulators, for possible memory and nonvolatile logic applications. We model the possibility and dynamics of RKKY-based switching of one nanomagnet by coupling to one or more nanomagnets of set orientation. Potential applications to both memory and nonvolatile logic are illustrated. Sub-attojoule switching energies, far below conventional spin transfer torque (STT)-based memories and even below CMOS logic appear possible. Switching times on the order of a few nanoseconds, comparable to times for STT switching, are estimated for ferromagnetic nanomagnets, but the approach also appears compatible with the use of antiferromagnets which may allow for faster switching.},
doi = {10.1063/1.4959089},
journal = {Journal of Applied Physics},
number = 3,
volume = 120,
place = {United States},
year = {Thu Jul 21 00:00:00 EDT 2016},
month = {Thu Jul 21 00:00:00 EDT 2016}
}