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Article

Open Access

Study of Photofield Emission in GaAs Using Kronig-Penney Model

Author(s)

Leishangthem Nirmala Devi¹, Benjamin Vanlalruata¹, Ram Kumar Thapa^{1, 2*} and A. H. Reshak^{3, 4}

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DOI:10.17265/2161-6213/2016.3-4.010

Affiliation(s)

1. Condensed Matter Theory Research Group, Department of Physics, Mizoram University, 796004, India
2. Condensed Matter Physics Research Centre, Butwal, Rupendehi, Nepal
3. New Technologies - Research Centre, University of West Bohemia, Univerzitni 8, 306 14 Pilsen, Czech Republic
4. Center of Excellence Geopolymer and Green Technology, School of Material Engineering, University Malaysia Perlis, 01007 Kangar, Perlis, Malaysia

ABSTRACT

In this letter, we present the calculated results of photofield emission current (PFEC) in gallium arsenide (GaAs) by using Kronig-Penney potential model of Thapa and Kar [1]. It is found that PFEC decreases from higher value towards lower value exponentially in the case of GaAs. The results of plot of PFEC against initial state energy with respect to Fermi energy showed a maximum at 2.55 eV. Occurrence of these maxima is correlated with the plot of DOS (Density of state) of GaAs obtained by using DFT (Density functional theory).

KEYWORDS

Photofield emission current, photon energy, vector potential, Kronig-Penney model, density functional theory.

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References

Study of Photofield Emission in GaAs Using Kronig-Penney Model

Leishangthem Nirmala Devi1, Benjamin Vanlalruata1, Ram Kumar Thapa1, 2* and A. H. Reshak3, 4

Leishangthem Nirmala Devi¹, Benjamin Vanlalruata¹, Ram Kumar Thapa^{1, 2*} and A. H. Reshak^{3, 4}