کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10642299 997647 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantum Hall effect: The resistivity of a 2D electron gas-a thermodynamic approach
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Quantum Hall effect: The resistivity of a 2D electron gas-a thermodynamic approach
چکیده انگلیسی
Based on a thermodynamic approach, we have calculated the resistivity of a 2D electron gas, assumed dissipationless in a strong quantum limit. Standard measurements, with extra current leads, define the resistivity caused by a combination of Peltier and Seebeck effects. The current causes heating (cooling) at the first (second) sample contacts, due to the Peltier effect. The contact temperatures are different. The measured voltage is equal to the Peltier effect-induced thermoemf which is linear in current. As a result, the resistivity is non-zero as I→0. The resistivity is a universal function of magnetic field and temperature, expressed in fundamental units h/e2. The universal features of magnetotransport data observed in the experiment confirm our predictions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 28, Issue 4, September 2005, Pages 393-401
نویسندگان
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