I give a brief introduction to Luttinger liquids. Luttinger liquids are paramagnetic one-dimensional metals without Landau quasi-particle excitations. The elementary excitations are collective charge and spin modes, leading to charge-spin separation. Correlation functions exhibit power-law behavior. All physical properties can be calculated, e.g. by bosonization, and depend on three parameters ...

Abstract Multi-orbital physics in quasi-two-dimensional electron gases (q2DEGs) triggers intriguing phenomena not observed bulk materials, such as unconventional superconductivity and magnetism. Here, we investigate the mechanism of orbital selective switching spin-polarization oxide q2DEG formed at (001) interface between LaAlO 3 , EuTiO SrTiO band insulators. By using density functional theor...

The in-plane photoelectric (IPPE) effect is a recently discovered [Sci. Adv. 8, eabi8398 (2022)] quantum phenomenon, which enables efficient detection of terahertz (THz) radiation in semiconductor structures with two-dimensional (2D) electron gas. Here, we develop theory the IPPE quasi-one-dimensional systems width 2D conducting channel so small that transverse quantization energy larger than t...