Spin Polarization of Composite Fermions: Measurements of the Fermi Energy
| العنوان: | Spin Polarization of Composite Fermions: Measurements of the Fermi Energy |
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| المؤلفون: | I. V. Kukushkin, Klaus von Klitzing, Karl Eberl |
| المصدر: | Physical Review Letters. 82:3665-3668 |
| بيانات النشر: | American Physical Society (APS), 1999. |
| سنة النشر: | 1999 |
| مصطلحات موضوعية: | Physics, Spin polarization, Condensed matter physics, Composite fermion, Density of states, General Physics and Astronomy, Fermi energy, Electron, Polarization (waves), Circular polarization, Magnetic field |
| الوصف: | From the degree of circular polarization of the time-resolved radiative recombination of 2D electrons with photoexcited holes bound to acceptors we have measured the magnetic field dependencies of the electron spin polarization for various fractional ( $\ensuremath{\nu}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2/3$, $3/5$, $4/7$, $2/5$, $3/7$, $4/9$, $8/5$, $4/3$, and $7/5$) and composite fermions ( $\ensuremath{\nu}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1/2$, $1/4$, and $3/2$) states. The Fermi energies of these composite fermion states are measured for the first time and the corresponding value of the composite fermion density of states mass at $\ensuremath{\nu}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}1/2$ is found to be about 4 times heavier than the previously reported values of the ``activation'' mass. |
| تدمد: | 1079-7114 0031-9007 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::b69ab8cafad8135ecaa6bcd400572e8f https://doi.org/10.1103/physrevlett.82.3665 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........b69ab8cafad8135ecaa6bcd400572e8f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10797114 00319007 |
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