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Studies from University of Dschang Reveal New Findings on Physics (Dynamics of a central electron spin coupled to an anti-ferromagnetic spin bath...

September 2, 2014



Studies from University of Dschang Reveal New Findings on Physics (Dynamics of a central electron spin coupled to an anti-ferromagnetic spin bath driven by a variable magnetic field in the Landau-Zener scenario)

By a News Reporter-Staff News Editor at Physics Week -- Research findings on Physics are discussed in a new report. According to news reporting originating in Dschang, Cameroon, by VerticalNews journalists, research stated, "The Landau-Zener (LZ) transition probability of a two-level crossing in a single quantum dot driven by a two-state auto-correlated (TSAC) noise is studied. The model used isolates a central electron spin (CES) system bathed with TSAC noise and an anti-ferromagnetic spin bath."

The news reporters obtained a quote from the research from the University of Dschang, "This model turnes into the LZ formalism in the limit of weak-excitation magnetic field. The effects of noise and of the coupling with the spin chain, on the LZ-transition probability are studied. In the weak coupling regime of the CES with the bath, it is seen that the TSAC noise effect can be compared with that of a deterministic sinusoidal oscillating function."

According to the news reporters, the research concluded: "In the strong coupling regime this effect decreases and alters the noise process on the LZ-transition probability."

For more information on this research see: Dynamics of a central electron spin coupled to an anti-ferromagnetic spin bath driven by a variable magnetic field in the Landau-Zener scenario. European Physical Journal Plus, 2014;129(7):1-7. European Physical Journal Plus can be contacted at: Springer Heidelberg, Tiergartenstrasse 17, D-69121 Heidelberg, Germany. (Springer - www.springer.com; European Physical Journal Plus - www.springerlink.com/content/2190-5444/)

Our news correspondents report that additional information may be obtained by contacting G.C. Fouokeng, Univ Dschang, Dept. of Phys, Mesoscop & Multilayer Struct Lab, Fac Sci, Dschang, Cameroon. Additional authors for this research include M. Tchoffo, M.E. Ateuafack and L.C. Fai.

Keywords for this news article include: Africa, Dschang, Physics, Cameroon

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Physics Week


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