作者：Harrison, Ewan
作者单位：Wellcome Trust Sanger Institute; Cambridge University Hospitals NHS Foundation Trust; Addenbrooke's Hospital; University of Cambridge
作者：Huang, Shenyang; Yu, Boyang; Ma, Yixuan; Pan, Chenghao; Ma, Junwei; Zhou, Yuxuan; Ma, Yaozhenghang; Yang, Ke; Wu, Hua; Lei, Yuchen; Xing, Qiaoxia; Mu, Lei; Zhang, Jiasheng; Mou, Yanlin; Yan, Hugen
作者单位：Fudan University; Fudan University; Fudan University; Fudan University; University of Shanghai for Science & Technology; Shanghai Qi Zhi Institute
摘要：Bright dipolar excitons, which contain electrical dipoles and have high oscillator strength, are an ideal platform for studying correlated quantum phenomena. They usually rely on carrier tunneling between two quantum wells or two layers to hybridize with nondipolar excitons to gain oscillator strength. In this work, we uncovered a new type of bright infrared dipolar exciton by stacking 90 degrees-twisted black phosphorus (BP) structures. These excitons, inherent to the reconstructed band struc...
作者：Ramos, Raul; Plotnikov, Valerii; Cheprasov, Maksim Y.; Plikus, Maksim V.
作者单位：University of California System; University of California Irvine; North-Eastern Federal University in Yakutsk
作者：Devulapalli, Vivek; Chen, Enze; Brink, Tobias; Frolov, Timofey; Liebscher, Christian H.
作者单位：Max Planck Society; Stanford University; United States Department of Energy (DOE); Lawrence Livermore National Laboratory; Ruhr University Bochum; Ruhr University Bochum
摘要：Engineering the structure of grain boundaries (GBs) by solute segregation is a promising strategy to tailor the properties of polycrystalline materials. Solute segregation triggering phase transitions at GBs has been suggested theoretically to offer different pathways to design interfaces, but an understanding of their intrinsic atomistic nature is missing. We combined atomic resolution electron microscopy and atomistic simulations to discover that iron segregation to GBs in titanium stabilize...
