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Indication of band flattening at the Fermi level in a strongly correlated electron system

Using ultra-high quality SiGe/Si/SiGe quantum wells at millikelvin temperatures, we experimentally compare the energy-averaged effective mass, m, with that at the Fermi level, m (F), and verify that the behaviours of these measured values are qualitatively different. With decreasing electron density...

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Detalles Bibliográficos
Autores principales: Melnikov, M. Yu., Shashkin, A. A., Dolgopolov, V. T., Huang, S.-H., Liu, C. W., Kravchenko, S. V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5674001/
https://www.ncbi.nlm.nih.gov/pubmed/29109456
http://dx.doi.org/10.1038/s41598-017-15117-x