Tunable correlated Chern insulator and ferromagnetism in a moiré superlattice

作者: Guorui Chen , Aaron L. Sharpe , Eli J. Fox , Ya-Hui Zhang , Shaoxin Wang

DOI: 10.1038/S41586-020-2049-7

关键词: ElectronMagnetic fieldFerromagnetismQuantum Hall effectMagnetic hysteresisSuperlatticeChern classCondensed matter physicsPhysicsElectric field

摘要: Studies of two-dimensional electron systems in a strong magnetic field revealed the quantum Hall effect, a topological state of matter featuring a finite Chern number C and …

参考文章(43)
Fan Zhang, Bhagawan Sahu, Hongki Min, A. H. MacDonald, Band structure ofABC-stacked graphene trilayers Physical Review B. ,vol. 82, pp. 035409- ,(2010) , 10.1103/PHYSREVB.82.035409
C.-Z. Chang, J. Zhang, X. Feng, J. Shen, Z. Zhang, M. Guo, K. Li, Y. Ou, P. Wei, L.-L. Wang, Z.-Q. Ji, Y. Feng, S. Ji, X. Chen, J. Jia, X. Dai, Z. Fang, S.-C. Zhang, K. He, Y. Wang, L. Lu, X.-C. Ma, Q.-K. Xue, Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator Science. ,vol. 340, pp. 167- 170 ,(2013) , 10.1126/SCIENCE.1234414
Y. Lee, D. Tran, K. Myhro, J. Velasco, N. Gillgren, C. N. Lau, Y. Barlas, J. M. Poumirol, D. Smirnov, F. Guinea, Competition between spontaneous symmetry breaking and single-particle gaps in trilayer graphene. Nature Communications. ,vol. 5, pp. 5656- ,(2014) , 10.1038/NCOMMS6656
Yi-Fei Wang, Hong Yao, Chang-De Gong, D. N. Sheng, Fractional quantum Hall effect in topological flat bands with Chern number two Physical Review B. ,vol. 86, pp. 201101- ,(2012) , 10.1103/PHYSREVB.86.201101
Yuanbo Zhang, Tsung-Ta Tang, Caglar Girit, Zhao Hao, Michael C. Martin, Alex Zettl, Michael F. Crommie, Y. Ron Shen, Feng Wang, Direct observation of a widely tunable bandgap in bilayer graphene Nature. ,vol. 459, pp. 820- 823 ,(2009) , 10.1038/NATURE08105
L. Wang, I. Meric, P. Y. Huang, Q. Gao, Y. Gao, H. Tran, T. Taniguchi, K. Watanabe, L. M. Campos, D. A. Muller, J. Guo, P. Kim, J. Hone, K. L. Shepard, C. R. Dean, One-dimensional electrical contact to a two-dimensional material. Science. ,vol. 342, pp. 614- 617 ,(2013) , 10.1126/SCIENCE.1244358
Zhao Liu, Emil J. Bergholtz, Heng Fan, Andreas M. Läuchli, Fractional Chern Insulators in Topological Flat Bands with Higher Chern Number Physical Review Letters. ,vol. 109, pp. 186805- ,(2012) , 10.1103/PHYSREVLETT.109.186805
Long Ju, Zhiwen Shi, Nityan Nair, Yinchuan Lv, Chenhao Jin, Jairo Velasco, Claudia Ojeda-Aristizabal, Hans A. Bechtel, Michael C. Martin, Alex Zettl, James Analytis, Feng Wang, Topological valley transport at bilayer graphene domain walls Nature. ,vol. 520, pp. 650- 655 ,(2015) , 10.1038/NATURE14364
Fan Zhang, Jeil Jung, Gregory A. Fiete, Qian Niu, Allan H. MacDonald, Spontaneous Quantum Hall States in Chirally Stacked Few-Layer Graphene Systems Physical Review Letters. ,vol. 106, pp. 156801- ,(2011) , 10.1103/PHYSREVLETT.106.156801
C. R. Dean, L. Wang, P. Maher, C. Forsythe, F. Ghahari, Y. Gao, J. Katoch, M. Ishigami, P. Moon, M. Koshino, T. Taniguchi, K. Watanabe, K. L. Shepard, J. Hone, P. Kim, Hofstadter’s butterfly and the fractal quantum Hall effect in moiré superlattices Nature. ,vol. 497, pp. 598- 602 ,(2013) , 10.1038/NATURE12186