@article{ed8054886da24ac89608d01f83be0065,
title = "Spectroscopic fingerprint of chiral Majorana modes at the edge of a quantum anomalous Hall insulator/ superconductor heterostructure",
abstract = "With the recent discovery of the quantum anomalous Hall insulator (QAHI), which exhibits the conductive quantum Hall edge states without external magnetic field, it becomes possible to create a topological superconductor (SC) by introducing superconductivity into these edge states. In this case, 2 distinct topological superconducting phases with 1 or 2 chiral Majorana edge modes were theoretically predicted, characterized by Chern numbers (N) of 1 and 2, respectively. We present spectroscopic evidence from Andreev reflection experiments for the presence of chiral Majorana modes in an Nb/(Cr0.12Bi0.26Sb0.62)2Te3 heterostructure with distinct signatures attributed to 2 different topological superconducting phases. The results are in qualitatively good agreement with the theoretical predictions.",
author = "Junying Shen and Jian Lyu and Gao, {Jason Z.} and Xie, {Ying Ming} and Chen, {Chui Zhen} and Cho, {Chang woo} and Omargeldi Atanov and Zhijie Chen and Kai Liu and Hu, {Yajian J.} and Yip, {King Yau} and Goh, {Swee K.} and He, {Qing Lin} and Lei Pan and Wang, {Kang L.} and Law, {Kam Tuen} and Rolf Lortz",
note = "Funding Information: ACKNOWLEDGMENTS. R.L. acknowledges enlightening discussions with X.-G. Wen, H. Zhang, M. He, and X. Dai; and support by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (HKRGC) (Grants GRF-16302018, SBI17SC14, and IEG16SC03). K.T.L. acknowledges the support of HKRGC through Grant C6026-16W, the Croucher Foundation, and the Tai-chin Lo Foundation. S.K.G. acknowledges the support from the HKRGC Grant GRF-14300418. K.L.W. and Q.L.H. acknowledge the support of the Army Research Office Multiple University Research Initiative and Energy Frontier Research Center. Q.L.H. also acknowledges support from the National Natural Science Foundation of China (Grant 11874070), the National Key R&D Program of China (Grant 338 2018YFA0305601), and the National Thousand-Young Talents Program in China. Z.C. and K.L. acknowledge support from the US NSF (Grants DMR-1610060 and DMR-1905468). Funding Information: R.L. acknowledges enlightening discussions with X.-G. Wen, H. Zhang, M. He, and X. Dai; and support by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (HKRGC) (Grants GRF-16302018, SBI17SC14, and IEG16SC03). K.T.L. acknowledges the support of HKRGC through Grant C6026-16W, the Croucher Foundation, and the Tai-chin Lo Foundation. S.K.G. acknowledges the support from the HKRGC Grant GRF-14300418. K.L.W. and Q.L.H. acknowledge the support of the Army Research Office Multiple University Research Initiative and Energy Frontier Research Center. Q.L.H. also acknowledges support from the National Natural Science Foundation of China (Grant 11874070), the National Key R&D Program of China (Grant 338 2018YFA0305601), and the National Thousand-Young Talents Program in China. Z.C. and K.L. acknowledge support from the US NSF (Grants DMR-1610060 and DMR-1905468).",
year = "2020",
month = jan,
day = "7",
doi = "10.1073/pnas.1910967117",
language = "English",
volume = "117",
pages = "238--242",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "National Academy of Sciences",
number = "1",
}