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Umklapp-assisted electron transport oscillations in metal superlattices

Sergeij I. Kulinich ; Leonid Y. Gorelik (Institutionen för teknisk fysik, Kondenserade materiens teori) ; S. A. Gredeskul ; Robert I. Shekhter ; Mats Jonson
Physical Review B (1098-0121). Vol. 85 (2012), 18, p. artikel nr 184202.
[Artikel, refereegranskad vetenskaplig]

We consider a superlattice of parallel metal tunnel junctions with a spatially nonhomogeneous probability for electrons to tunnel. In such structures tunneling can be accompanied by electron scattering that conserves energy but not momentum. In the special case of a tunneling probability that varies periodically with period a in the longitudinal direction, i.e., perpendicular to the junctions, electron tunneling is accompanied by umklapp scattering, where the longitudinal momentum changes by a multiple of h/a. We predict that as a result a sequence of metal-insulator transitions can be induced by an external electric or magnetic field as the field strength is increased.



Denna post skapades 2012-06-01. Senast ändrad 2014-03-24.
CPL Pubid: 158379

 

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Institutioner (Chalmers)

Institutionen för fysik (GU) (GU)
Institutionen för teknisk fysik, Kondenserade materiens teori (1900-2015)

Ämnesområden

Fysik
Teknisk fysik

Chalmers infrastruktur