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CALCOLO DELLA STRUTTURA ELETTRONICA DEL Na₂He

CALCOLO DELLA STRUTTURA ELETTRONICA DEL Na₂He

B Suganya / D S Jayalakshmi

71,90 €
IVA incluido
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Física
ISBN:
9786630375879
71,90 €
IVA incluido
Disponible

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È stata condotta un’analisi computazionale delle proprietà strutturali ed elettroniche del Na₂He utilizzando il codice WIEN2K con il metodo LAPW (Linearized Augmented Plane Wave) a potenziale pieno (FP) basato sulla teoria funzionale della densità (DFT). Al fine di ottenere una descrizione ragionevole delle proprietà strutturali, elettroniche, ottiche e termiche del composto Na₂He, sono stati effettuati i relativi calcoli. Inoltre, nell’ambito di questo studio, abbiamo ricostruito la struttura superficiale di questo composto creando una supercella con strati di vario spessore e ne abbiamo confrontato le proprietà con quelle del Na₂He.Sono stati calcolati i parametri strutturali, ovvero la costante di reticolo, la lunghezza di legame e gli angoli di legame; i parametri elettronici quali il gap di banda, la densità di stato (DOS) e la struttura di banda; nonché le costanti ottiche fondamentali quali la funzione dielettrica, la conduttività ottica, l’indice di rifrazione e la riflettività, oltre alle proprietà termoelettriche. I risultati concordano bene con gli studi sperimentali e sono simili a quelli del composto utilizzato come riferimento, che era stato studiato in precedenza. Il Na₂He presenta un gap di banda diretto situato nel punto di simmetria Γ della zona di Brillouin. Questi materiali sono particolarmente adatti per dispositivi optoelettronici.

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