Phenomenon that occurs when a microscopically complicated system (such as a solid) behaves as if it contained different weakly interacting particles in free space.
The critical fluctuations responsible for the enhancement of the quasiparticle masses appear to weaken the superconducting state.
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This is the first observation of a three-quasiparticle chiral structure and establishes the primarily geometric nature of this phenomenon.
3
Quantum oscillations of the magnetostriction allow identifying the band-specific quasiparticle masses which by far exceed the band-structure derived masses.
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This shrinking is accompanied by a strong increase in the quasiparticle effective mass as x is tuned toward the maximum T{c}.
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In the usual case where both spin-orbit split bands are occupied, the intrinsic spin-Hall conductivity has a universal value for zero quasiparticle spectral broadening.
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The dimensionless ratio of the Seebeck coefficient to the electronic specific heat shows a minimum at a temperature close to threshold of the quasiparticle formation.
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A fitting analysis identifies clear anomalies at Tp=7.5 K in the temperature dependencies of the superconducting gap size and the quasiparticle relaxation lifetime.
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A low quasiparticle density of states at low energies with a multiband Fermi-surface topology would open a new door into electron pairing in CeCu2Si2.
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This contrasting behavior reveals the presence of uncondensed electrons coexisting with nodal quasiparticles.
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The known quasiparticles tend to act like heavier versions of electrons, but not so in this case.
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Interactions between electrons create wavelike disturbances-knownas quasiparticles-thatserve as the basic components of almost every complex material.