In traditional metals, the temperature (T) dependence of electrical resistivity vanishes at low
or high T, albeit for different reasons. Here, we review a class of materials, known as …

The appearance of the Planckian time τ Pl= ℏ/k BT is reviewed in both conventional and
unconventional metals. A pedagogical discussion of the various different timescales …

This review discusses instabilities of the Fermi-liquid state of conduction electrons in metals
with particular emphasis on magnetic quantum critical points. Both existing theoretical …

The three central phenomena of cuprate (copper oxide) superconductors are linked by a
common doping level p*—at which the enigmatic pseudogap phase ends and the resistivity …

Quantum criticality describes the collective fluctuations of matter undergoing a second-order
phase transition at zero temperature. Heavy-fermion metals have in recent years emerged …

Intermetallic compounds containing f-electron elements display a wealth of superconducting
phases, which are prime candidates for unconventional pairing with complex order …

The Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) state is a novel superconducting state in a
strong magnetic field characterized by the formation of Cooper pairs with nonzero total …

The study of quantum phase transitions that are not clearly associated with broken symmetry
is a major effort in condensed matter physics, particularly in regard to the problem of high …

While the recent advances in topology have led to a classification scheme for electronic
bands described by the standard theory of metals, a similar scheme has not emerged for …

The resistivity of the heavy-fermion superconductor C e C o I n 5 was measured as a
function of temperature, down to 25 mK and in magnetic fields of up to 16 T applied …