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

Ramaswamy, B.; Algarin, J. M.; Weinberg, I. N.; Chen, Y. -J.; Krivorotov, I. N.; Katine, J. A.; Shapiro, B.; Waks, E.

doi:10.1063/1.4953621

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

Journal Article · Mon Jun 13 00:00:00 EDT 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4953621· OSTI ID:1387863

Ramaswamy, B. ^[1]; Algarin, J. M. ^[2]; Weinberg, I. N. ^[3]; Chen, Y. -J. ^[4]; Krivorotov, I. N. ^[4]; Katine, J. A. ^[5]; Shapiro, B. ^[6]; Waks, E. ^[2]

Univ. of Maryland, College Park, MD (United States)
Univ. of Maryland, College Park, MD (United States). Inst. for Research in Electronics and Applied Physics (IREAP)
Weinberg Medical Physics LLC, Bethesda, MD (United States)
Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
HGST Research Center, San Jose, CA (United States)
Univ. of Maryland, College Park, MD (United States). Inst. for Systems Research (ISR)

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.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012670

OSTI ID:: 1387863

Alternate ID(s):: OSTI ID: 1256777

Journal Information:: Applied Physics Letters, Vol. 108, 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; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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