اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدFormation of an electron-phonon bi-fluid in bulk antimony
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The flow of charge and entropy in solids usually depends on collisions decaying quasiparticle momentum. Hydrodynamic corrections can emerge, however, if most collisions among quasiparticles conserve momentum and the mean-free-path approaches the sample dimensions. Here, through a study of electrical and thermal transport in antimony (Sb) crystals of various sizes, we document the emergence of a two-component fluid of electrons and phonons. Lattice thermal conductivity, dominated by electron scattering down to 0.1 K, displays prominent quantum oscillations. The Dingle mobility does not vary despite an order-of-magnitude change in transport mobility. Electrical resistivity shows an aborted Bloch-Gruneisen behavior, implying momentum conservation of electron-phonon collisions. Taken together, these results draw a consistent picture of a bi-fluid whose shortest intrinsic time scale is defined by momentum-conserving electron-phonon collisions.
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