Correlated Insulators, Semimetals, and Superconductivity in Twisted Trilayer Graphene
نویسندگان
چکیده
A numerical and analytical study of the phase diagram mirror-symmetric twisted trilayer graphene provides a guide for interpreting experiments on complex correlated physics observed in this system.
منابع مشابه
Topological Superconductivity in Dirac Semimetals.
Dirac semimetals host bulk band-touching Dirac points and a surface Fermi loop. We develop a theory of superconducting Dirac semimetals. Establishing a relation between the Dirac points and the surface Fermi loop, we clarify how the nontrivial topology of Dirac semimetals affects their superconducting state. We note that the unique orbital texture of Dirac points and a structural phase transiti...
متن کاملTopological semimetals and topological insulators in rare earth monopnictides
Minggang Zeng†1,2, Chen Fang†3, Guoqing Chang, Yu-An Chen, Timothy Hsieh, Arun Bansil, Hsin Lin∗1,2 and Liang Fu∗∗3 Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, Singapore 117546 Department of Physics, National University of Singapore, Singapore 117542 Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139,...
متن کاملUnconventional Superconductivity in YPtBi and Related Topological Semimetals.
YPtBi, a topological semimetal with a very low carrier density, was recently found to be superconducting below T_{c}=0.77 K. In conventional theory, the nearly vanishing density of states around the Fermi level would imply a vanishing electron-phonon coupling and would, therefore, not allow for superconductivity. Based on relativistic density-functional theory calculations of the electron-phon...
متن کاملTunable infrared phonon anomalies in trilayer graphene.
Trilayer graphene in both ABA (Bernal) and ABC (rhombohedral) stacking sequences is shown to exhibit intense infrared absorption from in-plane optical phonons. The phonon feature, lying at ~1580 cm(-1), changes strongly with electrostatic gating. For ABC-stacked graphene trilayers, we observed a large enhancement in phonon absorption amplitude, as well as softening of the phonon mode, as the Fe...
متن کاملInteger quantum Hall effect in trilayer graphene.
By using high-magnetic fields (up to 60 T), we observe compelling evidence of the integer quantum Hall effect in trilayer graphene. The magnetotransport fingerprints are similar to those of the graphene monolayer, except for the absence of a plateau at a filling factor of ν=2. At a very low filling factor, the Hall resistance vanishes due to the presence of mixed electron and hole carriers indu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review X
سال: 2022
ISSN: ['2160-3308']
DOI: https://doi.org/10.1103/physrevx.12.021018