Physicists open new path to an exotic form of superconductivity

Good news! Amazing stuff! But it sounds a bit exotic!

"Physicists have identified a mechanism for the formation of oscillating superconductivity known as pair-density waves. Physical Review Letters published the discovery, which provides new insight into an unconventional, superconductive state seen in certain materials, including high-temperature superconductors.
“We discovered that structures known as Van Hove singularities can produce modulating, oscillating states of superconductivity,” ..."

From the abstract:

"While advances in electronic band theory have brought to light new topological systems, understanding the interplay of band topology and electronic interactions remains a frontier question. In this work, we predict new interacting electronic orders emerging near higher-order Van Hove singularities present in the Chern bands of the Haldane model. We classify the nature of such singularities and employ unbiased renormalization group methods that unveil a complex landscape of electronic orders, which include ferromagnetism, density waves, and superconductivity. Importantly, we show that repulsive interactions can stabilize the long-sought pair-density-wave state and an exotic Chern supermetal, which is a new class of non-Fermi liquid with anomalous quantum Hall response. This framework opens a new path to explore unconventional electronic phases in two-dimensional chiral bands through the interplay of band topology and higher-order Van Hove singularities."

Physicists open new path to an exotic form of superconductivity

Physicists open new path to an exotic form of superconductivity (primary news source)

Emergence of the Chern Supermetal and Pair-Density Wave through Higher-Order Van Hove Singularities in the Haldane-Hubbard Model (no public access)