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First Principle Study on Strontium Magnates (Srmno3) - Bok av Legesse Belayneh Merid - Häftad

First Principle Study on Strontium Magnates (Srmno3) - Bok av Legesse Belayneh Merid - Häftad

The electronic structure and magnetic properties of cubic and hexagonal SrMnO3 are calculated using QuantumESPRESSO package within density functional theory in generalized gradient approximation GGA and GGA+U. The structural and electronic properties are obtained for several different possible magnetic configurations. In cubic and hexagonal cases the ground states show AF ordering. The GGA+U giving insulating properties paramagnetic and ferromagnetic for both phases better than GGA but in the cases..

SEK 616.00
1

THEORETICAL AND NUMERICAL ANALYSIS OF AN ECOLOGICAL SYSTEM - Bok av Sabah Ali Rahi - Häftad

THEORETICAL AND NUMERICAL ANALYSIS OF AN ECOLOGICAL SYSTEM - Bok av Sabah Ali Rahi - Häftad

A three-dimensional prey-predator model is suggested to explain the interplay between prey and two age stages of the predator. The fear function is modeled in the prey population. It has also been hypothesized that the prey is strong enough to show anti-predator behavior and has the ability to kill the predator as a natural response to resistance to predation. The traditional Holling¿s disk Eq. (Holling type II) is modified to explain the prey consumption to involve an additional food (AF) for the..

SEK 920.00
1