Thermal and electrical transport in metals and superconductors across antiferromagnetic and topological quantum transitions

Understand

We study thermal and electrical transport in metals and superconductors near a quantum phase transition where antiferromagnetic order disappears.

• The same theory can also be applied to quantum phase transitions involving the loss of certain classes of intrinsic topological order.
• For a clean superconductor, we recover and extend the well-known universal results.
• The heat conductivity for commensurate and incommensurate antiferromagnetism coexisting with superconductivity shows a markedly different doping dependence near the quantum critical point, thus allowing to distinguish the states.