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Title: Wireless current sensing by near field induction from a spin transfer torque nano-oscillator

Abstract

We demonstrate that spin transfer torque nano-oscillators (STNO) can act as wireless sensors for local current. The STNO acts as a transducer that converts weak direct currents into microwave field oscillations that we detect using an inductive coil. We detect direct currents in the range of 300–700 $$μ$$A and report them wirelessly to a receiving induction coil at distances exceeding 6.5 mm. This current sensor could find application in chemical and biological sensing and industrial inspection.

Authors:
 [1];  [2];  [3];  [4];  [4];  [5];  [6];  [2]
+ Show Author Affiliations
  1. Univ. of Maryland, College Park, MD (United States)
  2. Univ. of Maryland, College Park, MD (United States). Inst. for Research in Electronics and Applied Physics (IREAP)
  3. Weinberg Medical Physics LLC, Bethesda, MD (United States)
  4. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
  5. HGST Research Center, San Jose, CA (United States)
  6. Univ. of Maryland, College Park, MD (United States). Inst. for Systems Research (ISR)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1387863
Alternate Identifier(s):
OSTI ID: 1256777
Grant/Contract Number:  
SC0012670
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 24; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; phonons; thermal conductivity; thermoelectric; spin dynamics; spintronics

Citation Formats

Ramaswamy, B., Algarin, J. M., Weinberg, I. N., Chen, Y. -J., Krivorotov, I. N., Katine, J. A., Shapiro, B., and Waks, E. Wireless current sensing by near field induction from a spin transfer torque nano-oscillator. United States: N. p., 2016. Web. doi:10.1063/1.4953621.
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Ramaswamy, B., Algarin, J. M., Weinberg, I. N., Chen, Y. -J., Krivorotov, I. N., Katine, J. A., Shapiro, B., & Waks, E. Wireless current sensing by near field induction from a spin transfer torque nano-oscillator. United States. https://doi.org/10.1063/1.4953621
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Ramaswamy, B., Algarin, J. M., Weinberg, I. N., Chen, Y. -J., Krivorotov, I. N., Katine, J. A., Shapiro, B., and Waks, E. Mon . "Wireless current sensing by near field induction from a spin transfer torque nano-oscillator". United States. https://doi.org/10.1063/1.4953621. https://www.osti.gov/servlets/purl/1387863.
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@article{osti_1387863,
title = {Wireless current sensing by near field induction from a spin transfer torque nano-oscillator},
author = {Ramaswamy, B. and Algarin, J. M. and Weinberg, I. N. and Chen, Y. -J. and Krivorotov, I. N. and Katine, J. A. and Shapiro, B. and Waks, E.},
abstractNote = {We demonstrate that spin transfer torque nano-oscillators (STNO) can act as wireless sensors for local current. The STNO acts as a transducer that converts weak direct currents into microwave field oscillations that we detect using an inductive coil. We detect direct currents in the range of 300–700 $μ$A and report them wirelessly to a receiving induction coil at distances exceeding 6.5 mm. This current sensor could find application in chemical and biological sensing and industrial inspection.},
doi = {10.1063/1.4953621},
journal = {Applied Physics Letters},
number = 24,
volume = 108,
place = {United States},
year = {Mon Jun 13 00:00:00 EDT 2016},
month = {Mon Jun 13 00:00:00 EDT 2016}
}
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Publisher's Version of Record
https://doi.org/10.1063/1.4953621
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    Strong nonequilibrium effects in spin-torque systems
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