Hastatic order is a fundamental way of breaking double "time-reversal" symmetry. It is present in the heavy-fermion compound URu₂Si₂. This order was dubbed ''hastatic'' from ''hasta'', the Latin word for "spear". Its cycle is twice as complex as

magnetism Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particles ...

Discovery

Hastatic order was first reported in January 2013 when the heavy-fermion uranium compound URu₂Si₂ was cooled to nearly . It was said to produce extra heat and the heat was the main mystery. After the extra heat was released, particles were arranged at this way, making the hastatic order present on that reaction.

References

* Fermions Uranium {{particle-stub