This work is supported by Guangdong Basic and Applied Basic Research Foundation under Grant 2023A1515012048;Shenzhen Fundamental Research Program under Grant JCYJ20220530114615035;This work is also supported in part by the National Natural Science Foundation under Grant 62104092;Guangdong Basic and Applied Basic Research Foundation under Grant 2021A1515011952;F.D.acknowledges M-ERA.NET Program for financial support via GOFIB project administrated in Finland by the Academy of Finland project number 352518;F.D.,K.N.and J.B.acknowledge the international collaboration within the COST Action FIT4NANO CA19140 supported by the European Cooperation in Science and Technology,https://www.cost.eu/.The computational resource is supported by the Center for Computational Science and Engineering at the Southern University of Science and Technology.The authors are also grateful to the grants of computer power from CSC-IT Center for Science,Finland.J.Z.also acknowledge Prof.L.-J.Zhang and Prof.Y.-H.Fu at Jilin University,for the helpful discussion on the CALYPSO-predicted P1 and Pmc21Ga2O_(3) structures50.The authors are also grateful to Dr.H.Liu and Dr.I.Makkonen at the University of Helsinki and Prof.A.Kuznetsov at the University of Oslo for the insightful discussion.
Ga_(2)O_(3) is a wide-band gap semiconductor of emergent importance for applications in electronics and optoelectronics.However,vital information of the properties of complex coexisting Ga_(2)O_(3) polymorphs and low-...