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.
Skip Nav Destination
Article navigation
21 July 2016
Research Article|
July 20 2016
Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications
Bahniman Ghosh;
Bahniman Ghosh
a)
Microelectronics Research Center,
University of Texas at Austin
, 10100 Burnet Road, Bldg. 160, Austin, Texas 78758, USA
Search for other works by this author on:
Rik Dey;
Rik Dey
Microelectronics Research Center,
University of Texas at Austin
, 10100 Burnet Road, Bldg. 160, Austin, Texas 78758, USA
Search for other works by this author on:
Leonard F. Register;
Leonard F. Register
Microelectronics Research Center,
University of Texas at Austin
, 10100 Burnet Road, Bldg. 160, Austin, Texas 78758, USA
Search for other works by this author on:
Sanjay K. Banerjee
Sanjay K. Banerjee
Microelectronics Research Center,
University of Texas at Austin
, 10100 Burnet Road, Bldg. 160, Austin, Texas 78758, USA
Search for other works by this author on:
a)
E-mail: bghosh@utexas.edu
J. Appl. Phys. 120, 034303 (2016)
Article history
Received:
April 04 2016
Accepted:
July 07 2016
Citation
Bahniman Ghosh, Rik Dey, Leonard F. Register, Sanjay K. Banerjee; Voltage-controlled low-energy switching of nanomagnets through Ruderman-Kittel-Kasuya-Yosida interactions for magnetoelectric device applications. J. Appl. Phys. 21 July 2016; 120 (3): 034303. https://doi.org/10.1063/1.4959089
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00