Physics Nature Is Weird

In a weird twist of physics, adding a bunch of chaos to a material can actually force it to become perfectly organized.

April 3, 2026

Original Paper

Entropic crystallization of geometrically frustrated magnets on 1/1 approximant Tsai-type quasicrystal

Oscar Novat, Ludovic D. C. Jaubert, Masafumi Udagawa

arXiv · 2604.02180

The Takeaway

We usually think of 'entropy' as something that breaks things down into chaos. In this magnetic system, however, the drive toward higher entropy actually forces the atoms to lock into a rigid, crystalline order, completely inverting our intuition about how matter freezes.

From the abstract

We have studied the antiferromagnetic Ising model on the icosahedral bcc lattice, as a model system of 1/1 approximant Tsai-type quasicrystals. We addressed thermal equilibrium properties of this system with Markov-chain Monte Carlo simulation supplemented with the parallel tempering technique to accelerate the relaxation dynamics. As a result, we found a second-order phase transition takes place to the magnetic ordered phase with ${\mathbb Z_3}\times {\mathbb Z_2}$ symmetry breaking. Despite th