Induced quantum numbers in a (2+1)-dimensional electron gas

Magnetoresistance quantum oscillations in a magnetic two-dimensional electron gas

J. Kunc,1,2,* B. A. Piot,1 D. K. Maude,1 M. Potemski,1 R. Grill,2 C. Betthausen,3 D. Weiss,3 V. Kolkovsky,4 G. Karczewski,4 and T. Wojtowicz4 1Laboratoire National des Champs Magnétiques Intenses (LNCMI), CNRS-UJF-UPS-INSA, 38042 Grenoble, France 2Institute of Physics, Faculty of Mathematics and Physics, 12116 Prague, Czech Republic 3Experimentelle und Angewandte Physik, Universität Regensburg,...

Quantum holographic encoding in a two-dimensional electron gas.

The ability of the scanning tunnelling microscope to manipulate single atoms and molecules has allowed a single bit of information to be represented by a single atom or molecule. Although such information densities remain far beyond the reach of real-world devices, it has been assumed that the finite spacing between atoms in condensed-matter systems sets a rigid upper limit on information densi...

Quantum Oscillations in Black Phosphorus Two- dimensional Electron Gas

Quantum dots and etch-induced depletion of a silicon two-dimensional electron gas

The controlled depletion of electrons in semiconductors is the basis for numerous devices. Reactive-ion etching provides an effective technique for fabricating both classical and quantum devices. However, Fermi-level pinning must be carefully considered in the development of small devices, such as quantum dots. Because of depletion, the electrical size of the device is reduced in comparison wit...

Absolute negative resistance induced by directional electron-electron scattering in a two-dimensional electron gas.

A three-terminal device formed by two electrostatic barriers crossing an asymmetrically patterned two-dimensional electron gas displays an unusual potential depression at the middle contact, yielding absolute negative resistance. The device displays momentum and current transfer ratios that far exceed unity. The observed reversal of the current or potential in the middle terminal can be interpr...