Related Experiment Video
Updated: May 17, 2026

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
Published on: July 11, 2025
Magnetic-Field-Driven Insulator-Superconductor Transition in Rhombohedral Graphene
Jian Xie1, Zihao Huo1, Zhimou Chen1
1Peking University, International Center for Quantum Materials, School of Physics, Beijing 100871, China.
Abstract:
Recent studies of rhombohedral multilayer graphene have revealed a variety of superconducting states that can be induced or enhanced by magnetic fields, reinforcing rhombohedral multilayer graphene as a powerful platform for investigating novel superconductivity. Here, we report an insulator-superconductor transition driven by in-plane magnetic fields B_{∥} in rhombohedral hexalayer graphene. The upper critical field of B_{∥} can reach 2 T and an analysis based on isospin symmetry breaking supports a spin-polarized superconductor. At B_{∥}=0, such spin-polarized superconductor transitions into an insulator, exhibiting a thermally activated gap of Δ≈0.14 meV. In addition, we observe four superconducting states in the hole-doped regime, which violate the Pauli limit, as well as phases with magnetoelectric hysteresis near charge neutrality point. These findings substantially enrich the phase diagram of rhombohedral graphene and provide new insight into the microscopic mechanisms of superconductivity.
Related Concept Videos
Superconductor
Types Of Superconductors
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Valence Bond Theory
Ferromagnetism

