Proximity-driven ferromagnetism and superconductivity in the triangular Rashba-Hubbard model

نویسندگان

چکیده

Bilayer Moir\'e structures are a highly tunable laboratory to investigate the physics of strongly correlated electron systems. transition metal dichalcogenides at low-energies, in particular, believed be described by single narrow band Hubbard model on triangular lattice with spin-orbit coupling. Motivated recent experimental evidence for superconductivity twisted bilayer materials, we possible superconducting pairings two-dimensional Rashba-Hubbard model. Using random-phase approximation presence nearest and next-nearest neighbor hopping, analyze structure spin fluctuations symmetry gap function. We show that Rashba coupling favors ferromagnetic which strengthen triplet superconductivity. If parity is violated due absence spatial inversion symmetry, singlet (d-wave) (p-wave) channels will mixed. Moreover, time-reversal can spontaneously broken leading chiral state. Finally, consider quasiparticle interference as technique observe symmetry.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Ferromagnetism and triplet superconductivity in the two-dimensional Hubbard model

We review magnetic and superconducting instabilities in the t-t Hubbard model on the two-dimensional square lattice as obtained with functional one-loop renormalization group techniques. Special emphasis is put on ferromagnetic and triplet superconducting tendencies that could be relevant to the triplet superconductor Sr2RuO4. The layered perovskite oxide Sr2RuO4 may become the first well-estab...

متن کامل

Unconventional superconductivity on the triangular lattice Hubbard model

Kuang Shing Chen,1,* Zi Yang Meng,1,2,† Unjong Yu,3 Shuxiang Yang,1,2 Mark Jarrell,1,2 and Juana Moreno1,2 1Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA 2Center for Computation and Technology, Louisiana State University, Baton Rouge, Louisiana 70803, USA 3GIST-College, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea (Rece...

متن کامل

Ferromagnetism and Superconductivity in Two-band Hubbard Models

s of Doctor′s Theses (Received The Degree of Doctorof Engineering in 2006) ..................................................................................................................................................................... 24 Abstracts of Papers (Published in 2006) ....................................................................................................................

متن کامل

Spin - fluctuation superconductivity in the Hubbard model

The theory of the superconductivity mediated by kinematic and exchange interactions in t?J and two-band Hubbard models in a paramagnetic state is formulated. The Dyson equations for the matrix Green functions in terms of the Hubbard operators are obtained in the non-crossing approximation. To calculate superconducting T c a numerical solution of self-consistent Eliashberg equations is proposed.

متن کامل

Superconductivity in the Repulsive Hubbard Model

The two-dimensional repulsive Hubbard model has been investigated by a variety of methods, from small to large U . Superconductivity with d-wave symmetry is consistently found close to half filling. After a brief review of the various methods a variational many-electron state is discussed in more detail. This trial state is a natural extension of the Gutzwiller ansatz and provides a substantial...

متن کامل

ذخیره 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

سال: 2022

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevb.105.064504