Colloquium : Heavy-electron quantum criticality and single-particle spectroscopy

• DOI: 10.1103/revmodphys.92.011002
• Publication Date: 2020-03-10T11:42:34Z
• Authors: Stefan Kirchner; Silke Paschen; Qiuyun Chen; Steffen Wirth; Donglai Feng; Joe D. Thompson; Qimiao Si
• Keywords: Particle (ecology)

Quantum critical behavior occurs at low temperatures where quantum fluctuations become more important than thermal fluctuations. Of particular current interest is unconventional criticality, which lacks a classical counterpart. Angle resolved photoemission and scanning tunneling microscopy are experimental techniques that measure single-particle excitations, recently been used to probe strongly correlated metals near points Here, how the properties reflect criticality discussed, prospect for further measurements unearth new physical behavior.