Abrupt crossover between thermally activated relaxation and quantum tunneling in a molecular magnet

K. M. Mertes; Y. Zhong; M. P. Sarachik; Y. Paltiel; H. Shtrikman; E. Zeldov; E. Rumberger; D. N. Hendrickson; G. Christou

doi:10.1209/epl/i2001-00363-0

Abrupt crossover between thermally activated relaxation and quantum tunneling in a molecular magnet

K. M. Mertes^*
, Y. Zhong
, M. P. Sarachik
, Y. Paltiel
, H. Shtrikman
, E. Zeldov
, E. Rumberger
, D. N. Hendrickson
, G. Christou

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

We report Hall sensor measurements of the magnetic relaxation of Mn₁₂ acetate as a function of magnetic field applied along the easy axis of magnetization. Detailed data taken at a series of closely spaced temperatures between 0.24 K and 1.4 K indicate an abrupt shift between thermally activated and ground-state tunneling over a narrow range of temperature.

Original language	English
Pages (from-to)	874-879
Number of pages	6
Journal	Europhysics Letters
Volume	55
Issue number	6
DOIs	https://doi.org/10.1209/epl/i2001-00363-0
State	Published - 11 Sep 2001
Externally published	Yes

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abstract = "We report Hall sensor measurements of the magnetic relaxation of Mn12 acetate as a function of magnetic field applied along the easy axis of magnetization. Detailed data taken at a series of closely spaced temperatures between 0.24 K and 1.4 K indicate an abrupt shift between thermally activated and ground-state tunneling over a narrow range of temperature.",

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AU - Mertes, K. M.

AU - Zhong, Y.

AU - Sarachik, M. P.

AU - Paltiel, Y.

AU - Shtrikman, H.

AU - Zeldov, E.

AU - Rumberger, E.

AU - Hendrickson, D. N.

AU - Christou, G.

PY - 2001/9/11

Y1 - 2001/9/11

N2 - We report Hall sensor measurements of the magnetic relaxation of Mn12 acetate as a function of magnetic field applied along the easy axis of magnetization. Detailed data taken at a series of closely spaced temperatures between 0.24 K and 1.4 K indicate an abrupt shift between thermally activated and ground-state tunneling over a narrow range of temperature.

AB - We report Hall sensor measurements of the magnetic relaxation of Mn12 acetate as a function of magnetic field applied along the easy axis of magnetization. Detailed data taken at a series of closely spaced temperatures between 0.24 K and 1.4 K indicate an abrupt shift between thermally activated and ground-state tunneling over a narrow range of temperature.

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Abrupt crossover between thermally activated relaxation and quantum tunneling in a molecular magnet

Abstract

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