Jeong, Seung Gyo Min, Taewon Woo, Sungmin Kim, Jiwoong Zhang, Yu-Qiao Cho, Seong Won Son, Jaeseok Kim, Young-Min Han, Jung Hoon Park, Sungkyun Jeong, Hu Young Ohta, Hiromichi Lee, Suyoun Noh, Tae Won Lee, Jaekwang Choi, Woo Seok 2024-01-19T18:30:39Z 2024-01-19T18:30:39Z 2021-09-05 2020-01-13 0031-9007 https://pubs.kist.re.kr/handle/201004/119091 Artificial crystals synthesized by atomic-scale epitaxy provide the ability to control the dimensions of the quantum phases and associated phase transitions via precise thickness modulation. In particular, the reduction in dimensionality via quantized control of atomic layers is a powerful approach to revealing hidden electronic and magnetic phases. Here, we demonstrate a dimensionality-controlled and induced metal-insulator transition (MIT) in atomically designed superlattices by synthesizing a genuine two-dimensional (2D) SrRuO3 crystal with highly suppressed charge transfer. The tendency to ferromagnetically align the spins in an SrRuO3 layer diminishes in 2D as the interlayer exchange interaction vanishes, accompanying the 2D localization of electrons. Furthermore, electronic and magnetic instabilities in the two SrRuO3 unit cell layers induce a thermally driven MIT along with a metamagnetic transition. English AMER PHYSICAL SOC METAL INTERFACES TRANSITION EFFICIENCY Phase Instability amid Dimensional Crossover in Artificial Oxide Crystal Article 10.1103/PhysRevLett.124.026401 1 PHYSICAL REVIEW LETTERS, v.124, no.2 PHYSICAL REVIEW LETTERS 124 2 scie scopus 000506852200009 2-s2.0-85078500184 Physics, Multidisciplinary Physics Article METAL INTERFACES TRANSITION EFFICIENCY