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New Findings from Jadavpur University in the Area of Condensed Matter Described (Field emission from finite barrier quantum structures)

September 2, 2014

By a News Reporter-Staff News Editor at Physics Week -- Researchers detail new data in Condensed Matter. According to news originating from Kolkata, India, by VerticalNews correspondents, research stated, "We study field emission from various finite barrier quasi-low dimensional structures, taking image force into account. To proceed, we first formulate an expression for field emission current density from a quantum dot."

Our news journalists obtained a quote from the research from Jadavpur University, "Transverse dimensions of the dot are then increased in turn, to obtain current densities respectively from quantum wire and quantum well with infinite potential energy barriers. To find out field emission from finite barrier structures, the above analysis is followed with a correction in the energy eigen values. In course, variations of held emission current density with strength of the applied electric field and structure dimensions are computed considering n-GaAs and n-GaAs/AlxGa1-xAs as the semiconductor materials. In each case, the current density is found to increase exponentially with the applied field, while it oscillates with structure dimensions. The magnitude of the emission current is less when the image force is not considered, but retains the similar held dependence."

According to the news editors, the research concluded: "In all cases, the field emission from infinite barrier structures exceeds those from respective finite barrier ones."

For more information on this research see: Field emission from finite barrier quantum structures. Physica B-Condensed Matter, 2014;450():162-166. Physica B-Condensed Matter can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands.

The news correspondents report that additional information may be obtained from S.B. Sett, Jadavpur University, Elect & Telecommun Engg Department, Kolkata 700032, India.

Keywords for this news article include: Asia, India, Kolkata, Condensed Matter

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Source: Physics Week

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