Zigzag nanoribbons in external electric and magnetic fields. (6th July 2010)

• Record Type: Journal Article
• Authors: Korotyaev, Evgeny L.; Kutsenko, Anton A.
• Is Part Of: International journal of computing science and mathematics. Volume 3:Number 1/2(2010)
• Page Start: 168
• Page End: 191
• Publication Date: 2010-07-06
• Subjects: nanoribbon spectral band -- magnetic Schrodinger operators -- zigzag nanoribbons -- electric fields -- magnetic fields -- carbon nanoribbons -- nanotechnology; Mathematics -- Periodicals; Computer science -- Periodicals; Mathematics -- Data processing -- Periodicals; 510.285
• Languages: English
• ISSNs: 1752-5055

Abstract

We consider the Schrodinger operators on zigzag nanoribbons (tight-binding models) in external magnetic and electric fields. If these fields are absent, then the spectrum of the Schrodinger operator consists of two non-flat bands and one flat band (an eigenvalue with infinite multiplicity) between them. We describe all magnetic and electric fields for which the unperturbed flat band remains the flat band and when one splits into the small band of the continuous spectrum. Also we determine spectral asymptotics for small fields and solve inverse spectral problem.