Sentences with phrase «electron gas»

It's called a two - dimensional hole gas — a counterpart to something known as a two - dimensional electron gas.

And scientists must tweak the crystal's two - dimensional electron gas to electronically vary its output frequencies, something casual crystal buyers probably won't be able to do.

«Recreating outer space in the lab: Extending thermodynamics to out of equilibrium electron gas in a magnetic nozzle.»

«New oxide and semiconductor combination builds new device potential: Researchers integrated oxide two - dimensional electron gases with gallium arsenide and paved the way toward new opto - electrical devices.»

The field gives rise to two - dimensional electron gas by which carriers travel across the transistor from source to drain.

Researchers have been exploring 2D electron gas, which was only discovered in 2004, to see how it can be used in superconductors, actuators, and electronic memory devices, among others.

In this way, the scattering rate can increase and the mobility can decrease without greatly affecting the two - dimensional electron gas carrier density.

This implies that classical thermodynamic principles can be extended to the expansion of a collisionless electron gas, being far away from the equilibrium, in a magnetic nozzle.

The lab used the light to probe the shift in an ultra-high quality, two - dimensional electron gas supplied by Purdue University physicist Michael Manfra and set in a gallium arsenide quantum well (to contain the particles) under the influence of a strong magnetic field and low temperature.

J.A. Curtis, T. Tokumoto, A.T. Hatke, J.G. Cherian, J. L. Reno, S.A. McGill, D. Karaiskaj, D. J.Hilton, Cyclotron decay time of a two - dimensional electron gas from 0.4 to 100 K; Physical Review B, 93, 155437 (2015).

«The ability to couple or to integrate these interesting oxide two - dimensional electron gases with gallium arsenide opens the way to devices that could benefit from the electrical and optical properties of the semiconductor,» Kornblum said.

Sheets of electrons that are highly mobile in only two dimensions, known as 2D electron gas, have unique properties that can be leveraged for faster and novel electronic devices.

It also provides an electrically attractive environment that causes carriers that are scattered out of the two - dimensional electron gas by radiation - induced defects to be reinjected.

The conducting electrons at the interface form a two - dimensional electron gas (2DEG) which boasts exotic quantum properties that make the system potentially useful in electronics and photonics applications.

As a result, the hole gas forms at the interface of the layers on the top, while the electron gas forms at the interface of the layers on the bottom — the first demonstration of a very powerful complementary pair.

Writing today (Feb. 5, 2018) in the journal Nature Materials, Eom and his collaborators provided evidence of a hole gas coexisting with the electron gas.

For the surface plasmon polariton to exist, a metal, or more specifically, an electron gas in the metal, is needed.

Two examples: graphene — single - atom - thick sheets of carbon atoms — has unique mechanical, electrical, and optical properties; and two - dimensional electron gases (2DEG)-- planar collections of electrons supported at the interface between certain semiconductors such as gallium arsenide — allow the observation of such emergent behaviors as the quantum Hall effect and the spin Hall effect.

To address the terahertz gap, the team created a hybrid semiconductor: a layer of thick conducting material paired with two thin, two - dimensional crystalline layers made from graphene, silicene (a graphene - like material made from silicon instead of carbon), or a two - dimensional electron gas.

The experimental results show the decreasing electron temperature along the expansion, following a near perfect adiabatic expansion of an electron gas when electric fields are removed from the system.

Physical picture of the electron gas expanding in the magnetic wall, where Q = 0 for the adiabatic expansion, resulting in a change of the internal energy of the electron gas is equal to the work done on their surroundings.

Hence the decrease in the electron temperature along the expansion results from lowering the internal energy of this adiabatic system with the electron gas doing work on the expanding magnetic field.

The group has developed liquid - helium cooled scanning probe microscopes (SPMs) that can image electron motion through a two dimensional electron gas, in GaAs / AlGaAs and graphene / hBN layered structures.

So is the closely related phenomenon of superconductivity, the frictionless flow of an electron gas in a conducting material (an electric current) at sufficiently low temperatures.

We can build a two - dimensional electron gas (2DEG) in which the mean free path exceeds 0.35 mm at low temperatures!