Magnetic field induced linear Coulomb gap in tunnelling between disordered two-dimensional electron systems

Autor: D. Yu. Ivanov, P. C. Main, J. C. Portal, Mohamed Henini, Duncan K. Maude, G. Hill, Laurence Eaves, E. E. Vdovin, V. A. Volkov, Yu. V. Dubrovskii, V. G. Popov, Richard Hill
Rok vydání: 2002
Předmět:
Zdroj: Physica E: Low-dimensional Systems and Nanostructures. 12:300-303
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(01)00350-2
Popis: We have investigated equilibrium tunnelling between disordered two-dimensional electron systems at temperatures below 0:3 K over a wide range of magneticeld, B, applied perpendicular to the electron layers. In zeroeld, we observe a narrow conductance peak of about 1 mV width at zero bias. As B is increased, this is transformed into a narrow linear gap in the tunnel spectrum. The existence of the linear gap is discussed in terms of many-electron interaction e7ects. ? 2002 Elsevier Science B.V. All rights reserved. PACS: 73.20.Dx; 73.40.Gk; 72.15.Rn
Databáze: OpenAIRE