6 papers
Superconductivity via paramagnon and magnon exchange in a 2D near-ferromagnetic full metal and ferromagnetic half-metal
Zachary M Raines, Andrey V Chubukov
We study superconductivity in paramagnetic and ferromagnetically-ordered phases in a two-dimensional electron system with parabolic fermionic dispersion and short-range repulsive i…
Superconductivity induced by spin-orbit coupling in a two-valley ferromagnet
Zachary M Raines, Andrey V Chubukov
We analyze the origin of superconductivity in a ferromagnetically ordered state of multi-layer graphene systems placed in proximity to WSe. We model these materials by a two-va…
Two-dimensional Stoner transitions beyond mean-field
Zachary M. Raines, Andrey V. Chubukov
We have previously shown that the Stoner instability 2D has unconventional behavior: it is strongly first order but features a susceptibility which diverges at the transition point…
Unconventional discontinuous transitions in a 2D system with spin and valley degrees of freedom
Zachary M. Raines, Leonid I. Glazman, Andrey V. Chubukov
We analyze the transition into the most favorable ordered state for a system of 2D fermions with spin and valley degrees of freedom. We show that for a range of rotationally invari…
Unconventional discontinuous transitions in isospin systems
Zachary M. Raines, Leonid I. Glazman, Andrey V. Chubukov
We show that two-dimensional fermions with dispersion or undergo a first-order Stoner transition to a fully spin-polarized state despite that the spin susceptibility di…
Applicability of Eliashberg theory for systems with electron-phonon and electron-electron interaction: a comparative analysis
Shang-Shun Zhang, Zachary M. Raines, Andrey V. Chubukov
We present a comparative analysis of the validity of Eliashberg theory for the cases of fermions interacting with an Einstein phonon and with soft nematic fluctuations near an Isin…