Yuan Pang

Spatially resolved gap closing in single Josephson junctions constructed on Bi2Te3 surface

On the road of searching for Majorana fermions in condensed matter systems, a highly-sought signature is full gap-closing, as a condition for hosting the Majorana zero modes, in Josephson devices constructed on the surface of topological insulators. In this Letter, we present direct experimental evidence of gap-closing in single Josephson junctions constructed on Bi

Anomalous magnetic moments as evidence of chiral superconductivity in a Bi/Ni bilayer

_2

Observation of an Even–Odd Asymmetric Transport in High Landau Levels

Te

Large Linear Magnetoresistance in Dirac Semimetal Cd 3 As 2 with Fermi Surfaces Close to the Dirac Points

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Protected gap closing in Josephson junctions constructed on Bi2Te3 surface

surface via local contact-resistance measurement.

Anomalous magnetic moments as evidence of chiral superconductivity in Bi/Ni bilayer

Junhua Wang, ∗ Xinxin Gong, ∗ Guang Yang, Zhaozheng Lyu, Yuan Pang, Guangtong Liu, Zhongqing Ji, Jie Fan, Xiunian Jing, 3 Changli Yang, 3 Fanming Qu, Xiaofeng Jin, † and Li Lu 3, 4, † Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, People’s Republic of China Collaborative Innovation Center of Quantum Matter, Beijing 100871, People’s Republic of China School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, People’s Republic of China (Dated: March 21, 2018)

Observation of Anomalous Magnetic Moments in Superconducting Bi/Ni Bilayer

Magnetotransport experiments including tilt fields are performed on ultrahigh mobility L-shaped Hall-bar samples of GaAs/AlGaAs quantum wells. The low-temperature longitudinal resistivity (ρxx ) data demonstrate that a striking even–odd asymmetric transport exists along the [ ] direction at half filling in N ≥ 2 high Landau levels. Although the origin for the peculiar even–odd asymmetry remains unclear, we propose that the coupling strength between electrons within the same Landau level and between the neighboring two Landau levels should be considered in future studies. The tilt field data show that the in-plane field can suppress the formation of both bubble and stripe phases.