تقرير
Effective mass suppression in dilute, spin-polarized two-dimensional electron systems
| العنوان: | Effective mass suppression in dilute, spin-polarized two-dimensional electron systems |
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| المؤلفون: | Padmanabhan, Medini, Gokmen, T., Bishop, N. C., Shayegan, M. |
| المصدر: | Phys. Rev. Lett. 101, 026402 (2008) |
| سنة النشر: | 2008 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We report effective mass (m*) measurements, via analyzing the temperature dependence of the Shubnikov-de Haas oscillations, for dilute, interacting, two-dimensional electron systems (2DESs) occupying a single conduction-band valley in AlAs quantum wells. When the 2DES is partially spin-polarized, m* is larger than its band value, consistent with previous results on various 2DESs. However, as we fully spin polarize the 2DES by subjecting it to strong parallel magnetic fields, m* is unexpectedly suppressed and falls even below the band mass. Comment: 4 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.101.026402 |
| URL الوصول: | http://arxiv.org/abs/0807.1327 |
| رقم الأكسشن: | edsarx.0807.1327 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.101.026402 |
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