2V DEG Series

What is a 2DEG and how does it work?

These 2DEGs involve many-body interactions that give rise to a variety of physical phenomena such as superconductivity, magnetism, tunable metal–insulator transitions and phase separation. Increasing the mobility of the 2DEG, however, remains a major challenge.

What are 2DEGs based on?

One of the most important developments in semiconductors, both from the viewpoint of fundamental physics and for the purpose of developing new devices, has been the realization of 2DEGs in heterointerfaces based on Si or on III–V compounds.

What is the difference between 2DEG & dxy / dyz?

Both types of STO 2DEGS exhibit a distinct electronic feature: the interfacial charge carriers (t2g electrons) come in two species, dxy and dxz / dyz (z is perpendicular to the 2D layers) 27, 28, 29, 30. The dxy component accounts for most of the 2DEG charge.

What is the electron mobility of a 2DEG?

The very high electron mobility of 73,000 cm 2 V −1 s −1 is larger than any yet-reported mobilities for 2DEGs based on the LAO/STO system 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18. Figure 2: Electronic properties of d-LAO (8.5 nm)/STO heterostructures with and without LSMO (x = 0, 1/8, and 1/3) buffer layers.

What does a modulation-doped 2DEG show?

At low temperatures, the modulation-doped 2DEG exhibits Shubnikov–de Haas oscillations and fingerprints of the quantum Hall effect, demonstrating unprecedented high mobility and low electron density.

Can two-dimensional electron gases be used to develop all-oxide electronic devices?

Provided by the Springer Nature SharedIt content-sharing initiative Two-dimensional electron gases (2DEGs) formed at the interface of insulating complex oxides promise the development of all-oxide electronic devices.