Naslov
Exact solution of magnetic breakdown problem in quasi-one-dimensional geometry

Autori
Radić, Danko ; Bjeliš, Aleksa ; Zanchi, Dražen

Izvornik
Journal de physique. IV (1155-4339) 114 (2004); 129-132

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
magnetic breakdown ; kvasi-one-dimensional ; Stark interferometer ; oscillations ; dimerization ; anion gap

Sažetak
We present exact solution of the problem of electronic wave functions of quasi one- dimensional band with an inter-band gap at the Fermi surface and in the presence of magnetic field. The details of the analyzed model are appropriate to the situation in the Bechgaard salt (TMTSF)2ClO4 with the dimerizing anion order in the transverse direction. Limiting the effects of dimerization to the standard dimerization gap only, one obtains the electronic spectrum represented through solutions of a generalized Hill system of equations with simply periodic coefficients. The resulting wave-functions are discussed. In particular, we present the solutions for the case when the electrons spend as much time in the "junctions" as on their quasi-classical orbits. On the other hand, the limit when the tunnelling approach is valid is identified and the results are confronted with the well-known Slutskin-Kadigrobov solution. Furthermore, taking into account also the presumably finite transverse dimerizing displacements of chains, one encounters the qualitatively more complex problem of a system of equations with two- periodic coefficients. Some qualitatively new properties of electronic spectrum and corresponding one-electron physical quantities in this case will be discussed in detail.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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