Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2014 Oct:247:96-103.
doi: 10.1016/j.jmr.2014.08.013. Epub 2014 Sep 8.

Cryogenic single-chip electron spin resonance detector

Gabriele Gualco  1 , Jens Anders  1 , Andrzej Sienkiewicz  1 , Stefano Alberti  1 , László Forró  1 , Giovanni Boero  2
Affiliations

Cryogenic single-chip electron spin resonance detector

Gabriele Gualco et al. J Magn Reson. 2014 Oct.

Abstract

We report on the design and characterization of a single-chip electron spin resonance detector, operating at a frequency of about 20 GHz and in a temperature range extending at least from 300 K down to 4 K. The detector consists of an LC oscillator formed by a 200 μm diameter single turn aluminum planar coil, a metal-oxide-metal capacitor, and two metal-oxide-semiconductor field effect transistors used as negative resistance network. At 300 K, the oscillator has a frequency noise of 20 Hz/Hz(1/2) at 100 kHz offset from the 20 GHz carrier. At 4 K, the frequency noise is about 1 Hz/Hz(1/2) at 10 kHz offset. The spin sensitivity measured with a sample of DPPH is 10(8)spins/Hz(1/2) at 300 K and down to 10(6)spins/Hz(1/2) at 4 K.

Keywords: CMOS; Cryogenic; ESR.

PubMed Disclaimer

Publication types

LinkOut - more resources