The orbital magnetic moment of a finite piece of matter is expressed in terms of the one-body density matrix as a simple trace. We address a macroscopic system, insulating in the bulk, and we show that its orbital moment is the sum of a bulk term and a surface term, both extensive. The latter only occurs when the transverse conductivity is nonzero and it is due to conducting surface states. Simulations on a model Hamiltonian validate our theory.

Orbital magnetization in insulators: Bulk versus surface / Bianco, R; Resta, R. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 93:17(2016), pp. 174417-174417. [10.1103/PhysRevB.93.174417]

Orbital magnetization in insulators: Bulk versus surface

Bianco, R;Resta, R
2016

Abstract

The orbital magnetic moment of a finite piece of matter is expressed in terms of the one-body density matrix as a simple trace. We address a macroscopic system, insulating in the bulk, and we show that its orbital moment is the sum of a bulk term and a surface term, both extensive. The latter only occurs when the transverse conductivity is nonzero and it is due to conducting surface states. Simulations on a model Hamiltonian validate our theory.
2016
93
17
174417
174417
Orbital magnetization in insulators: Bulk versus surface / Bianco, R; Resta, R. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 93:17(2016), pp. 174417-174417. [10.1103/PhysRevB.93.174417]
Bianco, R; Resta, R
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1299836
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 14
social impact