Quantum tunnelling

Quantum mechanics

Catalysis

Algorithm

Cuprate

Metallurgy

Materials science

Niobium

Transition metal

Selenium

Biochemistry

Density wave theory

Computer science

Josephson effect

Physics

Nanotechnology

Diselenide

Superconductivity

Cooper pair

Condensed matter physics

Scanning tunneling microscope

Wave function

Chemistry

Charge density wave

State (computer science)

Density of states

Science

Imaging an exotic state Among the most intriguing of the many phases of cuprate superconductors is the so-called pair density wave (PDW) state. PDW is characterized by a spatially modulated density of Cooper pairs and can be detected with a scanning tunneling microscope equipped with a superconducting tip. Liu et al. used Josephson tunneling microscopy, modified for the task, to detect PDW in niobium diselenide, a superconductor with a layered hexagonal structure. The PDW state is expected to appear in other transition metal dichalcogenides as well. Science , abd4607, this issue p. 1447

Discovery of a Cooper-pair density wave state in a transition-metal dichalcogenide