Guo, ChunyuAlexandradinata, A.Putzke, CarstenEstry, AmeliaTu, TengKumar, NiteshFan, Feng-RenZhang, ShengnanWu, QuanshengYazyev, Oleg, VShirer, Kent R.Bachmann, Maja D.Peng, HailinBauer, Eric D.Ronning, FilipSun, YanShekhar, ChandraFelser, ClaudiaMoll, Philip J. W.2021-11-202021-11-202021-11-202021-10-2810.1038/s41467-021-26450-1https://infoscience.epfl.ch/handle/20.500.14299/183155WOS:000712527000008A versatile methodology to detect topological quasiparticles by transport measurements remains an open problem. Here, the authors propose and experimentally observe the temperature dependence of the quantum oscillation frequency as a signature of non-trivial band topology.The phase offset of quantum oscillations is commonly used to experimentally diagnose topologically nontrivial Fermi surfaces. This methodology, however, is inconclusive for spin-orbit-coupled metals where pi-phase-shifts can also arise from non-topological origins. Here, we show that the linear dispersion in topological metals leads to a T-2-temperature correction to the oscillation frequency that is absent for parabolic dispersions. We confirm this effect experimentally in the Dirac semi-metal Cd3As2 and the multiband Dirac metal LaRhIn5. Both materials match a tuning-parameter-free theoretical prediction, emphasizing their unified origin. For topologically trivial Bi2O2Se, no frequency shift associated to linear bands is observed as expected. However, the pi-phase shift in Bi2O2Se would lead to a false positive in a Landau-fan plot analysis. Our frequency-focused methodology does not require any input from ab-initio calculations, and hence is promising for identifying correlated topological materials.Multidisciplinary SciencesScience & Technology - Other Topicsmagnetic-susceptibilityfermi-surfacecatalogtext::journal::journal article::research article