Access the full text.
Sign up today, get DeepDyve free for 14 days.
(1932)
Z. Sowjetunion Proc. R. Soc. London, Ser. A Helv. Phys. Acta
(2000)
Computer Physics Communicatios Phys. Rev. E
(1998)
Phys. Rev. B
(1999)
J. Magn. Magn. Mat
(1984)
Phys. Soc. Jpn
(1999)
Euro. Phys. J. B
cond-mat/0101104, to be published in Advanced in Chemical Physics, and references therein
(1997)
Phys
(2000)
Computer Physics Communicatios
(1996)
Nature 383
35] private communication
(1998)
Phys. Rev. Lett
(1989)
Phys. Rev. Lett. Ao and J. Rammer, Phys. Rev. B Phys. Rev. B
(1996)
Phys. Rev. Lett. J. Low Temp. Phys. J. Low Temp. Phys
(2000)
EuroPhys. Lett. J.Phys. Soc. Jpn
(1997)
J. Appl. Phys
(1998)
Eur. Phys. J. B J. Low Temp. Phys
(1997)
Europhys. Lett
(1995)
Phys. Soc. Jpn. J. Phys. Soc. Jpn
(1996)
Europhy
(2000)
Frontiers in Magnetism and references therein
(2000)
EuroPhys
We study the effect of noise on the tunneling process of the magnetization in a sweeping field from the viewpoint of the nonadiabatic transition. The tunneling probability depends on the properties of the noise, e.g. the direction, the amplitude, and the relaxation time of the autocorrelation function. We investigate the tunneling probability in the presence of noise by solving the time-dependent Schrödinger equation numerically. We estimate the effective tunneling gap making use of the Landau-Zener-Stückelberg (LZS) formula. The dependence of the gap on the sweeping velocity reproduces the corresponding experimental data qualitatively. The estimated gap has no velocity dependence for a fast sweeping field and this gap seems to give the true gap. However, we show that a correction for the estimated energy gap is necessary and we propose a correction formula.
Physical Review B – American Physical Society (APS)
Published: Jan 1, 2002
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.