Bulletin of the American Physical Society
Spring 2023 Meeting of the APS New England Section
Volume 68, Number 4
Friday–Saturday, March 17–18, 2023; Amherst College, Amherst, Massachusetts
Session G00: Poster Session
6:00 PM,
Friday, March 17, 2023
Amherst College
Room: Lipton Lecture Room E110
Abstract: G00.00012 : Spectroscopic Observation of Electric Field Effects in the [VO(TPP)] Nanomagnet*
Presenter:
Francisca Abdo Arias
(Amherst College)
Authors:
Francisca Abdo Arias
(Amherst College)
Tanmai Pathak
(Amherst College)
Brendan C Sheehan
(University of Massachusetts Amherst, Amherst College)
Guanchu Chen
(Department of Physics and Astronomy, Amherst College)
Jonathan R Friedman
(Amherst College)
Fabio Santanni
(Universita degli Studi di Firenze)
Roberta Sessoli
(University Degli Studi di Firenze)
Lorenzo Sorace
(Universita degli Studi di Firenze)
Vanadyl oxide tetraphenylporphyrin, or [VO(TPP)], is a molecular nanomagnet that exhibits long coherence times and strong hyperfine coupling between the molecule’s S = 1/2 electronic spin and the vanadyl I = 7/2 nuclear spin. Using electron-spin resonance (ESR) spectroscopy in S-band, we can sweep a varying external magnetic field while applying continuous wave radiation to induce transitions between spin states in a crystal of [VO(TPP)]. Capacitor plates placed in the loop-gap resonator allow us to apply a static electric field of controlled strength directly to our sample while measuring the ESR spectrum. At low applied electric fields, we observe eight spin-state transitions consistent with the established hyperfine coupling for this molecule. However, there exists a critical field strength of ?3x10^5 V/m, above which the eight transitions nearly disappear and are replaced by a single strong ESR line. We present the experimental apparatus utilized to characterize this behavior and our planned next steps.
*Supported by NSF grant no. DMR-2207624.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700