7 papers
Magnon-Mediated Superconductivity in a 2D Itinerant Ferromagnet with Weak Easy-plane Magnetic Anisotropy
Vladimir Calvera, Heqiu Li, Yijie Wang +2
Motivated by recent observations of superconductivity in a quarter-metal state of spin- and valley- polarized graphene multilayers, we investigate pairing within a ferromagnetic ph…
Invariants for (2+1)D bosonic crystalline topological insulators for all 17 wallpaper groups
Vladimir Calvera, Naren Manjunath, Maissam Barkeshli
We study bosonic symmetry-protected topological (SPT) phases in (2+1) dimensions with symmetry , where is a general wallpaper group…
Symmetry-determined generalized ferromagnetism in multi-valley electron fluids
Vladimir Calvera, Erez Berg, Steven A. Kivelson
Quantum electronic fluids with spin and valley degrees of freedom have a correlation driven tendency to flavor polarization (generalized ferromagnetism). To first order in the long…
Dynamical kinetic energy quenching in the antiferromagnetic quantum critical metals
Anton Borissov, Vladimir Calvera, Sung-Sik Lee
We study the dynamics of critical spin fluctuations and hot electrons at the metallic antiferromagnetic quantum critical points with and spin symmetries, building upon…
Critical gate distance for Wigner crystallization in the two-dimensional electron gas
Agnes Valenti, Vladimir Calvera, Yubo Yang +4
We report on the properties of the two-dimensional electron gas in a dual-gate geometry, using quantum Monte Carlo methods to obtain aspects of the phase diagram as a function of e…
Theory of Coulomb driven nematicity in a multi-valley two-dimensional electron gas
Vladimir Calvera, Agnes Valenti, Sebastian D. Huber +2
The properties of a two-dimensional electron gas (2DEG) in a semiconductor host with two valleys related by an underlying rotational symmetry are studied using Hartree-Fock (…