Kohn-Luttinger Mechanism Driven Exotic Topological Superconductivity on the Penrose Lattice

Cao, Ye1; Zhang, Yongyou1; Liu, Yu-Bo1; Liu, Cheng-Cheng1; Chen, Wei-Qiang2,3,4; Yang, Fan1

2020-06-30

10.1103/PhysRevLett.125.017002

PHYSICAL REVIEW LETTERS   影响因子和分区

0031-9007

1079-7114

The Kohn-Luttinger mechanism for unconventional superconductivity (SC) driven by weak repulsive electron-electron interactions on a periodic lattice is generalized to the quasicrystal (QC) via a real-space perturbative approach. The repulsive Hubbard model on the Penrose lattice is studied as an example, on which a classification of the pairing symmetries is performed and a pairing phase diagram is obtained. Two remarkable properties of these pairing states are revealed, due to the combination of the presence of the point-group symmetry and the lack of translation symmetry on this lattice. First, the spin and spacial angular momenta of a Cooper pair is decorrelated: for each pairing symmetry, both spin-singlet and spintriplet pairings are possible even in the weak-pairing limit. Second, the pairing states belonging to the 2D irreducible representations of the D5 point group can be time-reversal-symmetry-breaking topological SCs carrying spontaneous bulk super current and spontaneous vortices. These two remarkable properties are general for the SCs on all QCs, and are rare on periodic lattices. Our work starts the new area of unconventional SCs driven by repulsive interactions on the QC.

SCI ; EI

英语

其他

NSFC[11674025][11704029][11922401][11674151][11774028]

Physics

Physics, Multidisciplinary

WOS:000544122900008

AMER PHYSICAL SOC

20202908942436

Topology

Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Atomic and Molecular Physics:931.3

PHYSICS

Web of Science

1.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China

Cao, Ye,Zhang, Yongyou,Liu, Yu-Bo,et al. Kohn-Luttinger Mechanism Driven Exotic Topological Superconductivity on the Penrose Lattice[J]. PHYSICAL REVIEW LETTERS,2020,125(1).

Cao, Ye,Zhang, Yongyou,Liu, Yu-Bo,Liu, Cheng-Cheng,Chen, Wei-Qiang,&Yang, Fan.(2020).Kohn-Luttinger Mechanism Driven Exotic Topological Superconductivity on the Penrose Lattice.PHYSICAL REVIEW LETTERS,125(1).

Cao, Ye,et al."Kohn-Luttinger Mechanism Driven Exotic Topological Superconductivity on the Penrose Lattice".PHYSICAL REVIEW LETTERS 125.1(2020).