Effect of electron-electron interactions on a two-dimensional electron gas in II-VIZnS0.06Se0.94/Zn0.8Cd0.2Sequantum wells

Autor:	W. C. Mitchel, Ikai Lo, R. C. Tu, Yan-Kuin Su, Li-Wei Tu, S. J. Chen
Rok vydání:	1999
Předmět:	Mass enhancement Physics Weak localization Electron density Crystallography Condensed matter physics Strongly correlated material Electron Fermi gas Quantum well Effective mass (spring–mass system)
Zdroj:	Physical Review B. 60:R11281-R11284
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.60.r11281
Popis:	A magnetotransport study has been performed in II-VI ${\mathrm{ZnS}}_{0.06}{\mathrm{Se}}_{0.94}{/\mathrm{Z}\mathrm{n}}_{0.8}{\mathrm{Cd}}_{0.2}\mathrm{Se}$ quantum wells. We observed the quantum effects of weak localization and electron-electron interactions on the two-dimensional electron gas in the ${\mathrm{Zn}}_{0.8}{\mathrm{Cd}}_{0.2}\mathrm{Se}$ well. The effective mass of electrons in this highly correlated system, determined from Shubnikov--de Haas measurements, exhibits a strong magnetic field dependence: ${m}^{*}{/m}_{0}{=0.143+0.0027B}^{2}.$ The mass enhancement is attributed to the ``dressing'' of electrons by the many-particle effect due to electron-electron interactions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::76d202105be45d785f743b300c936c27 https://doi.org/10.1103/physrevb.60.r11281 Zobrazit plný text záznamu