News Column

Studies from University of Antioquia Describe New Findings in Low Dimensional Structures (Effects of applied lateral electric field and hydrostatic...

July 22, 2014



Studies from University of Antioquia Describe New Findings in Low Dimensional Structures (Effects of applied lateral electric field and hydrostatic pressure on the intraband optical transitions in a GaAs/Ga1-xAlxAs quantum ring)

By a News Reporter-Staff News Editor at Physics Week -- Researchers detail new data in Low Dimensional Structures. According to news reporting from Medellin, Colombia, by VerticalNews journalists, research stated, "In this paper the simultaneous effects of applied lateral electric field and hydrostatic pressure on the intraband linear optical absorption coefficient have been investigated in a two-dimensional GaAs/Ga1-xAlxAs single quantum ring. The lateral confinement potential of the ring is approximated by square finite potential well model."

The news correspondents obtained a quote from the research from the University of Antioquia, "The one electron energy spectrum has been found using the effective mass approximation and an exact diagonalization technique. We find that for fixed geometric dimensions, the hydrostatic pressure can lead to both blue- and red-shift of the intraband optical absorption spectrum, while only a blue-shift is observed as a result of an electric field. The effect of hydrostatic pressure on the absorption coefficient's peaks is negligibly small."

According to the news reporters, the research concluded: "With the increase of electric field strength the absorption coefficient's peaks decrease."

For more information on this research see: Effects of applied lateral electric field and hydrostatic pressure on the intraband optical transitions in a GaAs/Ga1-xAlxAs quantum ring. Physica E-Low-Dimensional Systems & Nanostructures, 2014;60():95-99. Physica E-Low-Dimensional Systems & Nanostructures can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands.

Our news journalists report that additional information may be obtained by contacting A.K. Manaselyan, Univ Antioquia UdeA, Fac Ciencias Exactas & Nat, Inst Fis, Grp Mat Condensada UdeA, Medellin, Colombia. Additional authors for this research include M.G. Barseghyan, A.A. Kirakosyan, D. Laroze and C.A. Duque.

Keywords for this news article include: Medellin, Colombia, South America, Low Dimensional Structures

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


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Physics Week


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters