Transitions between phases of matter could result from topological excitations that force the particles to act in unison. Researchers have been studying BACOVO -- a one-dimensional quantum material. They have discovered in this material a novel topological phase transition, governed not by a single type of topological excitation, but by two different ones. In addition, they were able to choose which of the two sets would dominate the other.
from Latest Science News -- ScienceDaily https://ift.tt/2IkJJnz
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