Excess resistivity in graphene superlattices caused by umklapp electron–electron scattering
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DOI: 10.1038/s41567-018-0278-6
Abstract: In electronic transport, umklapp processes play a fundamental role as the only intrinsic mechanism that allows electrons to transfer momentum to the crystal lattice and, therefore, provide a finite electrical resistance in pure metals1,2. However,… read more here.
Keywords: electron electron; graphene; excess resistivity; umklapp scattering ... See more keywords
Electron momentum densities near Dirac cones: Anisotropic Umklapp scattering and momentum broadening
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DOI: 10.1038/s41598-017-00628-4
Abstract: The relationship between electron momentum densities (EMDs) and a band gap is clarified in momentum space. The interference between wavefunctions via reciprocal lattice vectors, making a band gap in momentum space, causes the scattering of… read more here.
Keywords: gap; momentum densities; umklapp scattering; momentum ... See more keywords
Low-temperature T -linear resistivity due to umklapp scattering from a critical mode
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DOI: 10.1103/physrevb.104.035140
Abstract: We consider the transport properties of a model of fermions scattered by a critical bosonic mode. The mode is overdamped and scattering is mainly in the forward direction. Such a mode appears at the quantum… read more here.
Keywords: resistivity; umklapp scattering; low temperature; mode ... See more keywords