Potassium copper fluoride KCuF 3 is considered the simplest model material realising the so-called Heisenberg quantum spin chain: The spins interact with their neighbours antiferromagnetically ...

It would be surprising if the spin-1⁄2 Heisenberg model were in this universality class, as conjectured by the researchers at Ljubljana, because it is linear and non-stochastic, ...

"This idea is captured by a simple textbook model called the Heisenberg spin model, which we can realize in one dimension (i.e., a chain) in our experimental platform using ultracold atoms," Lee ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their ...