Education:
Ph.D. Morgan State University, 2021
M.S. Bowie State University, 2007
B.S. University of District of Columbia, 2003

Research Interest:
My research so far has focused on Density functional theory (DFT) to calculate the current density in tunneling
magnetoresistance (TMR) structure in multilayered thin films by directly solving the many-body Schrödinger equation
using Hohenberg-Kohn theorem and Kohn-Sham formulation in local density approximation (LDA) for the exchange
and correlation energy. Density functional theory transforms many-body- Schrödinger equation HU(*r1,**, rN) =
E4(1,** , rN) into a single- particle Kohn-Sham equations Hks(*r) =Еф(r) using computational methods and codes to
solve the KS equations. Functional derivative local and non-local multi-functional are defined and the electron density
and its properties are derived. Electrons tunnel from the lower electrode a ferromagnetic metal to the top through a
nano-metric insulating layer when subjected to an external magnetic field. We will present Fe/Insulator/Fe
calculations with potential magnetic random accesses memory (MRAM) applications in a quantum computer, a logic
gate, and ultra-sensitive nano-sensors. Recent experimental comparative study of thin-film and nanowires of
Fe/Insulator/Fe show an enhanced magnetic property in the nanowires. This work will show that nanowires and nano-
columns show higher current-density compared to the films. Our DFT calculations results show that the current-
density value decreased with the thickness of the insulator layer. We then calculate the resistivity and the conductivity
crossing the insulator from the transmission spectrum with a 0.1 V fixed voltage between the electrodes and k-point
(A, B, C) is (4x4x112), equivalent to 900 k-points. A self-consistent field calculation was also performed on a
composite material of cobalt-ferrite (CFO)/carbon-nanotubes (CNT)/multi-layered graphene (MLG) to get the electron
density, the magnetizations, and atoms' energies. The bulk configuration of CFO/CNT/MLG composed one CFO (1)
and more CNT (n) and MLG (m). Each configuration (1xnxm) DFT calculation required different CPU times and total
energy convergences. The computation was analyzed by setting m=n=3 and applying MATLAB, Synopsis software,
Phyton, and on Ubuntu platform in the several DFT calculations.

Selected Publications

• P. Seck, D. Seifu, Enhanced Anisotropy in Nanowires for Energy Applications, DOI.
  (2018).

• H. Verma, T. Mekuria, P. Seck, H. Hong, S. Karna, D. Seifu, Proximity effect tuned
  magnetic properties in composites of carbon nanotubes and nanoparticles of CoFe2O4,
  Journal of Magnetism and Magnetic Materials,501 (2020) 166438.

• F. Alottebi, P. Seck, S.P. Karna, D. Seifu, Magnetic Properties of Fe/Topological
  Insulator/Fe Multilayer Films and Nano-columns, 2018 IEEE 18th International
  Conference on Nanotechnology (IEEE- NANO), IEEE, 2018, pp. 1-2.

• O. Krestinskaya, A. James, M. Bauer, J. Andrew, D. Arnold, F. Alottebi, P. Seck, D. Seifu,
  S. Karna, A. Kirwan, 2018-July. 18th International Conference on Nanotechnology, NANO
  2018.-. 18th International Conference on Nanotechnology, NANO 2018, DOI (2019).