Singular or non-Fermi liquids

274C.M.Varmaetal./PhysicsReports361(2002)

267–417

Fig.2.SpeciÿcheatofCeAl3atlowtemperaturesfromAndresetal.[28].Theslopeofthelinearspeciÿcheatisabout3000timesthatofthelinearspeciÿcheatof,say,Cu.However,thehigh-temperaturecut-o ofthislineartermissmallerthanthatofCubyasimilaramount.Theriseofthespeciÿcheatinamagneticÿeldatlowtemperaturesisthenuclearcontribution,irrelevanttoour

discussion.

Fig.3.ElectricalresistivityofCeAl3below100mK,plottedagainstT2.FromAndresetal.[28].

theprefactor ofthespeciÿcheatisafactorthousandtimeslargerthanusual,theprefactoroftheT2termintheresistivityisafactor106larger—while scaleslinearlywiththee ectivemassratiom =m,theprefactoroftheT2termintheresistivityincreasesforthisclassofFermiliquidsas(m =m)2.