WriterCenter for Artificial Low Dimensional Electronic Systems
RegDate2017-02-07
Hit2260
포토갤러리
내용보기
Exotic quantum criticalities
Exotic quantum criticalities beyond the Landau-Ginzburg-Wilson (LGW) paradigm isone of the cutting-edge themes in strongly correlated system. One concrete way to achievesuch criticalities is to consider phase transitions around symmetric non-trivial phases such asquantum spin liquids, non-Fermi liquid phases, Weyl semi-metals, and topological insulators.Non-trivial entanglement of the symmetric phases enforces quantum phase transitions to befundamentally different from ones of the LGW paradigm. Examples include symmetrybreakings around a non-Fermi liquid phase as in pyrochlore iridates, quantum phasetransitions from topological to trivial insulators as in BiTeI and black phosphorus, andnodal structure changing quantum phase transitions as in line-nodal metallic andsuperconductivities of heavy fermion systems. Another interesting class, which can beshown concretely, is quantum criticalities with quantum anomalies. We discuss characteristicsof the exotic quantum criticalities and their experimental consequences.