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- W3198490544 abstract "Fermi liquid theory forms the basis for our understanding of the majority of metals, which is manifested in the description of transport properties that the electrical resistivity goes as temperature squared in the limit of zero temperature. However, the observations of strange metal states in various quantum materials, notably high-temperature superconductors, bring this spectacularly successful theoretical framework into crisis. When electron scattering rate 1/{tau} hits its limit, kBT/{hbar} where {hbar} is the reduced Planck's constant, T represents absolute temperature and kB denotes Boltzmann's constant, Planckian dissipation occurs and lends strange metals a surprising link to black holes, gravity, and quantum information theory. Here, we show the characteristic signature of strange metallicity arising unprecedentedly in a bosonic system. Our nanopatterned YBa2Cu3O7-{delta}(YBCO) film arrays reveal T-linear resistance as well as B-linear magnetoresistance over an extended temperature and magnetic field range in a quantum critical region in the phase diagram. Moreover, the slope of the T-linear resistance {alpha}_cp appears bounded by {alpha}_cp {approx} h/2e^2 [1/T]_c^onset where T_c^onset is the temperature at which Cooper pairs form, intimating a common scale-invariant transport mechanism corresponding to Planckian this http URL contrast to fermionic systems where the temperature and magnetic field dependent scattering rates combine in quadrature of {hbar}/{tau} {approx} {sqrt} (((k_B T)^2+({mu}_B B)^2)), both terms linearly combine in the present bosonic system, i.e. {hbar}/{tau} {approx} (k_B T+[{gamma}{mu}]_B B), where {gamma} is a constant. By extending the reach of strange metal phenomenology to a bosonic system, our results suggest that there is a fundamental principle governing their transport which transcends particle statistics." @default.
- W3198490544 created "2021-09-13" @default.
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- W3198490544 date "2021-05-06" @default.
- W3198490544 modified "2023-10-17" @default.
- W3198490544 title "A strange metal in a bosonic system" @default.
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