تقرير
Quasi-ballistic transport of Dirac fermions in a Bi2Se3 nanowire
| العنوان: | Quasi-ballistic transport of Dirac fermions in a Bi2Se3 nanowire |
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| المؤلفون: | Dufouleur, J., Veyrat, L., Teichgraeber, A., Neuhaus, S., Nowka, C., Hampel, S., Cayssol, J., Schumann, J., Eichler, B., Schmidt, O., Buechner, B., Giraud, R. |
| سنة النشر: | 2012 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Quantum coherent transport of Dirac fermions in a mesoscopic nanowire of the 3D topological insulator Bi2Se3 is studied in the weak-disorder limit. At very low temperatures, many harmonics are evidenced in the Fourier transform of Aharonov-Bohm oscillations, revealing the long phase-coherence length of surface states. Remarkably, from their exponential temperature dependence, we infer an unusual 1/T power law for the phase coherence length. This decoherence is typical for quasi-ballistic fermions weakly coupled to the dynamics of their environment. Comment: two columns |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.110.186806 |
| URL الوصول: | http://arxiv.org/abs/1211.7316 |
| رقم الأكسشن: | edsarx.1211.7316 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.110.186806 |
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