Journal
PHYSICAL REVIEW LETTERS
Volume 127, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.127001
Keywords
-
Categories
Funding
- Deutsche Forschungsgemeinschaft through the Emmy Noether program [SE 2558/2]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) via RTG 1995, within the Priority Program SPP 2244 2DMP
- Germany's Excellence StrategyCluster of Excellence Matter and Light for Quantum Computing (ML4Q) [EXC 2004/1-390534769]
- European Research Council [ERC-2015-AdG-694097]
- UPV/EHU Grupos Consolidados [IT1249-19]
- Cluster of Excellence CUI: Advanced Imaging of Matter of the Deutsche Forschungsgemeinschaft (DFG)-EXC 2056 [390715994]
- Max Planck-New York City Center for Non-Equilibrium Quantum Phenomena
Ask authors/readers for more resources
Recent measurements of resistivity in magic-angle twisted bilayer graphene near the superconducting transition temperature exhibit twofold anisotropy when changing the direction of an in-plane magnetic field. This was interpreted as evidence for exotic nematic superconductivity. However, experimental findings suggest that in-plane magnetic field can hybridize chiral superconducting order parameters to induce nematicity in the transport response.
Recent measurements of the resistivity in magic-angle twisted bilayer graphene near the superconducting transition temperature show twofold anisotropy, or nematicity, when changing the direction of an in-plane magnetic field [Cao et al., Science 372, 264 (2021)]. This was interpreted as strong evidence for exotic nematic superconductivity instead of the widely proposed chiral superconductivity. Counter-intuitively, we demonstrate that in two-dimensional chiral superconductors the in-plane magnetic field can hybridize the two chiral superconducting order parameters to induce a phase that shows nematicity in the transport response. Its paraconductivity is modulated as cos(2 theta(B)), with theta(B) being the direction of the in-plane magnetic field, consistent with experiment in twisted bilayer graphene. We therefore suggest that the nematic response reported by Cao et al. does not rule out a chiral superconducting ground state.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available