NDLI: Giant spin-torque diode sensitivity in the absence of bias magnetic field

Content Provider	PubMed Central
Author	Fang, Bin Carpentieri, Mario Hao, Xiaojie Jiang, Hongwen Katine, Jordan A. Krivorotov, Ilya N. Ocker, Berthold Langer, Juergen Wang, Kang L. Zhang, Baoshun Bruno, Azzerboni Amiri, Pedram Khalili Finocchio, Giovanni Zeng, Zhongming
Copyright Year	2016
Abstract	Microwave detectors based on the spin-torque diode effect are among the key emerging spintronic devices. By utilizing the spin of electrons in addition to charge, they have the potential to overcome the theoretical performance limits of their semiconductor (Schottky) counterparts. However, so far, practical implementations of spin-diode microwave detectors have been limited by the necessity to apply a magnetic field. Here, we demonstrate nanoscale magnetic tunnel junction microwave detectors, exhibiting high-detection sensitivity of 75,400 mV mW−1 at room temperature without any external bias fields, and for low-input power (micro-Watts or lower). This sensitivity is significantly larger than both state-of-the-art Schottky diode detectors and existing spintronic diodes. Micromagnetic simulations and measurements reveal the essential role of injection locking to achieve this sensitivity performance. This mechanism may provide a pathway to enable further performance improvement of spin-torque diode microwave detectors.
Related Links	http://dx.doi.org/10.1038/ncomms11259
Starting Page	11259
File Format	PDF
ISSN	20411723
e-ISSN	20411723
Journal	Nature Communications
Volume Number	7
Language	English
Publisher	Nature Publishing Group
Publisher Date	2016-04-01
Access Restriction	Open
Rights Holder	Nature Publishing Group
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Physics and Astronomy(all) Chemistry(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Chemistry Physics and Astronomy Biochemistry, Genetics and Molecular Biology

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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