The scattering-based approach for calculating the ballistic conductance of open quantum systems is generalized to deal with magnetic transition metals as described by ultrasoft pseudopotentials. As an application we present quantum-mechanical conductance calculations for monatomic Co and Ni nanowires with a magnetization reversal. We find that in both Co and Ni nanowires, at the Fermi energy, the conductance of d electrons is blocked by a magnetization reversal, while the s states (one per spin) are perfectly transmitted. d electrons have a nonvanishing transmission in a small energy window below the Fermi level. Here, transmission is larger in Ni than in Co.

Ballistic conductance of magnetic Co and Ni nanowires with ultrasoft pseudopotentials / Smogunov, A.; Dal Corso, Andrea; Tosatti, Erio. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 70:4(2004), pp. art.-no. 045417.1-art.-no. 045417.9. [10.1103/PhysRevB.70.045417]

Ballistic conductance of magnetic Co and Ni nanowires with ultrasoft pseudopotentials

Dal Corso, Andrea;Tosatti, Erio
2004-01-01

Abstract

The scattering-based approach for calculating the ballistic conductance of open quantum systems is generalized to deal with magnetic transition metals as described by ultrasoft pseudopotentials. As an application we present quantum-mechanical conductance calculations for monatomic Co and Ni nanowires with a magnetization reversal. We find that in both Co and Ni nanowires, at the Fermi energy, the conductance of d electrons is blocked by a magnetization reversal, while the s states (one per spin) are perfectly transmitted. d electrons have a nonvanishing transmission in a small energy window below the Fermi level. Here, transmission is larger in Ni than in Co.
2004
70
4
1
9
045417
http://link.aps.org/doi/10.1103/PhysRevB.70.045417
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.70.045417
https://arxiv.org/abs/cond-mat/0405433
Smogunov, A.; Dal Corso, Andrea; Tosatti, Erio
File in questo prodotto:
File Dimensione Formato  
PRB-70-045417-2004.pdf

non disponibili

Licenza: Non specificato
Dimensione 424.33 kB
Formato Adobe PDF
424.33 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/17043
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 179
  • ???jsp.display-item.citation.isi??? 175
social impact