Choe, Daeseong Jin, Mi-Jin Kim, Shin-Ik Choi, Hyung-Jin Jo, Junhyeon Oh, Inseon Park, Jungmin Jin, Hosub Koo, Hyun Cheol Min, Byoung-Chul Hong, Seokmin Lee, Hyun-Woo Baek, Seung-Hyub Yoo, Jung-Woo 2024-01-19T19:03:24Z 2024-01-19T19:03:24Z 2021-09-05 2019-10 2041-1723 https://pubs.kist.re.kr/handle/201004/119514 A polar conductor, where inversion symmetry is broken, may exhibit directional propagation of itinerant electrons, i.e., the rightward and leftward currents differ from each other, when time-reversal symmetry is also broken. This potential rectification effect was shown to be very weak due to the fact that the kinetic energy is much higher than the energies associated with symmetry breaking, producing weak perturbations. Here we demonstrate the appearance of giant nonreciprocal charge transport in the conductive oxide interface, LaAlO3/SrTiO3, where the electrons are confined to two-dimensions with low Fermi energy. In addition, the Rashba spin-orbit interaction correlated with the sub-band hierarchy of this system enables a strongly tunable nonreciprocal response by applying a gate voltage. The observed behavior of directional response in LaAlO3/SrTiO3 is associated with comparable energy scales among kinetic energy, spin-orbit interaction, and magnetic field, which inspires a promising route to enhance nonreciprocal response and its functionalities in spin orbitronics. English Nature Publishing Group Gate-tunable giant nonreciprocal charge transport in noncentrosymmetric oxide interfaces Article 10.1038/s41467-019-12466-1 1 Nature Communications, v.10 Nature Communications 10 Y scie scopus 000489013700003 2-s2.0-85072939028 Multidisciplinary Sciences Science & Technology - Other Topics Article ROOM-TEMPERATURE ELECTRON-GAS LAALO3/SRTIO3 SUPERCONDUCTIVITY COEXISTENCE CONVERSION