RETRACTED: Chiral Majorana fermion modes in a quantum anomalous Hall insulator-superconductor structure

Qing Lin He; Lei Pan; Alexander L Stern; Edward C Burks; Xiaoyu Che; Gen Yin; Jing Wang; Biao Lian; Quan Zhou; Eun Sang Choi; Koichi Murata; Xufeng Kou; Zhijie Chen; Tianxiao Nie; Qiming Shao; Yabin Fan; Shou-Cheng Zhang; Kai Liu; Jing Xia; Kang L Wang

doi:10.1126/science.aag2792

RETRACTED: Chiral Majorana fermion modes in a quantum anomalous Hall insulator-superconductor structure

Science. 2017 Jul 21;357(6348):294-299. doi: 10.1126/science.aag2792. Epub 2017 Jul 20.

Authors

Qing Lin He¹, Lei Pan², Alexander L Stern³, Edward C Burks⁴, Xiaoyu Che², Gen Yin², Jing Wang^{5

6}, Biao Lian⁶, Quan Zhou⁶, Eun Sang Choi⁷, Koichi Murata², Xufeng Kou^{1

8}, Zhijie Chen⁴, Tianxiao Nie², Qiming Shao², Yabin Fan², Shou-Cheng Zhang⁹, Kai Liu⁴, Jing Xia³, Kang L Wang^{1

10}

Affiliations

¹ Department of Electrical and Computer Engineering, Department of Physics, and Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA. [email protected] [email protected] [email protected] [email protected].
² Department of Electrical and Computer Engineering, Department of Physics, and Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA.
³ Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA.
⁴ Physics Department, University of California, Davis, CA 95616, USA.
⁵ State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China.
⁶ Department of Physics, Stanford University, Stanford, CA 94305, USA.
⁷ National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310-3706, USA.
⁸ School of Information Science and Technology, ShanghaiTech University, Shanghai 200031, China.
⁹ Department of Physics, Stanford University, Stanford, CA 94305, USA. [email protected] [email protected] [email protected] [email protected].
¹⁰ King Abdulaziz City for Science and Technology (KACST), Center of Excellence in Green Nanotechnology, Riyadh, Saudi Arabia.

PMID: 28729508
DOI: 10.1126/science.aag2792

Abstract

Majorana fermion is a hypothetical particle that is its own antiparticle. We report transport measurements that suggest the existence of one-dimensional chiral Majorana fermion modes in the hybrid system of a quantum anomalous Hall insulator thin film coupled with a superconductor. As the external magnetic field is swept, half-integer quantized conductance plateaus are observed at the locations of magnetization reversals, giving a distinct signature of the Majorana fermion modes. This transport signature is reproducible over many magnetic field sweeps and appears at different temperatures. This finding may open up an avenue to control Majorana fermions for implementing robust topological quantum computing.

Publication types

Research Support, Non-U.S. Gov't
Retracted Publication