Phase-Breaking Effect Appearing in the Current–Voltage Characteristics of Double-Barrier Resonant Tunneling Diodes –Theoretical Fitting Over Four Orders of Magnitude–
Phase-Breaking Effect Appearing in the Current–Voltage Characteristics of Double-Barrier Resonant Tunneling Diodes –Theoretical Fitting Over Four Orders of Magnitude–
复制标题
双势垒谐振隧道二极管电流-电压特性中出现的断相效应-四个数量级的理论拟合-
DOI：
10.1143/jjap.40.3018
复制
发表时间：
2001
影响因子：
1.5
通讯作者：
N. Machida
中科院分区：
文献类型：
--
作者：
M. Nagase;K. Furuya;N. Machida
我们分析了双势垒谐振隧道二极管（DBRTD）的电流-电压（I-V）特性，考虑了断相效应和结构不均匀性，利用断相相关函数理论对四个数量级的实验数据进行拟合。除了二阶导数曲线的峰值外，断相效应还出现在 I-V 特性峰值百分之一以下的电流区域。井宽波动（如果有）影响后者，但不影响前者。利用该理论，分别估计了相位相干长度和阱宽波动。
We analyzed current–voltage (I–V) characteristics of double-barrier resonant tunneling diodes (DBRTDs), taking into account the phase-breaking effect and the structural inhomogeneity by using the correlation function theory of phase breaking to fit the experimental data over four orders of magnitude. The phase-breaking effect appears in the current region of less than one-hundredth of the peak in I–V characteristics, in addition to the peak of the second derivative curve. The well width fluctuation, if any, influences the latter but not the former. Using the theory, the phase-coherent length and the well width fluctuation are estimated separately.