Angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy (STM) have become indispensable tools in the study of correlated quantum materials. A new review article, published in the Colloquiua section of Reviews of Modern Physics, explicates the potential of these techniques in the context of heavy-electron quantum criticality.

In “Colloquium: Heavy-electron quantum criticality and single-particle spectroscopy“, the authors survey recent progress and possible challenges in the experimental investigations. The STM and ARPES spectra for several quantum-critical heavy-electron compounds are compared, and the prospects for further advances are outlined.