Carrier density and effective mass calculations in carbon nanotubes

2008 ◽  
Vol 245 (11) ◽  
pp. 2558-2562 ◽  
Author(s):  
Jose M. Marulanda ◽  
Ashok Srivastava
Keyword(s):  
Carbon Nanotubes ◽  
Effective Mass ◽  
Carrier Density

scholarly journals Gate-tunable plasmons in mixed-dimensional van der Waals heterostructures

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Sheng Wang ◽  
SeokJae Yoo ◽  
Sihan Zhao ◽  
Wenyu Zhao ◽  
Salman Kahn ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carrier Density ◽  
Electromagnetic Interaction ◽  
Luttinger Liquid ◽  
Fundamental Physics ◽  
Metallic Structures ◽  
One Dimensional ◽  
Figures Of Merit ◽  
Electrostatic Gating ◽  
Plasmon Dispersion

AbstractSurface plasmons, collective electromagnetic excitations coupled to conduction electron oscillations, enable the manipulation of light–matter interactions at the nanoscale. Plasmon dispersion of metallic structures depends sensitively on their dimensionality and has been intensively studied for fundamental physics as well as applied technologies. Here, we report possible evidence for gate-tunable hybrid plasmons from the dimensionally mixed coupling between one-dimensional (1D) carbon nanotubes and two-dimensional (2D) graphene. In contrast to the carrier density-independent 1D Luttinger liquid plasmons in bare metallic carbon nanotubes, plasmon wavelengths in the 1D-2D heterostructure are modulated by 75% via electrostatic gating while retaining the high figures of merit of 1D plasmons. We propose a theoretical model to describe the electromagnetic interaction between plasmons in nanotubes and graphene, suggesting plasmon hybridization as a possible origin for the observed large plasmon modulation. The mixed-dimensional plasmonic heterostructures may enable diverse designs of tunable plasmonic nanodevices.

Rationally optimized carrier effective mass and carrier density lead to high average ZT value in n-type PbSe

2021 ◽  
Author(s):  
Yu Xiao ◽  
Wei Liu ◽  
Yang Zhang ◽  
Dongyang Wang ◽  
Haonan Shi ◽  
...  
Keyword(s):  
Transport Properties ◽  
Effective Mass ◽  
Electrical Transport ◽  
Carrier Density ◽  
Electrical Transport Properties ◽  
Carrier Effective Mass ◽  
Thermoelectric Parameters

Among these intricately coupled thermoelectric parameters, the carrier effective mass (m*) and carrier density (n) are two key parameters to determine the electrical transport properties. To enhance the broad-temperature thermoelectric...

Carrier-density-dependent electron effective mass in Zn1−xMnxSe for 0⩽x⩽0.13

2005 ◽  
Vol 86 (18) ◽  
pp. 181907 ◽  
Author(s):  
K. C. Agarwal ◽  
B. Daniel ◽  
M. Grün ◽  
P. Feinäugle ◽  
C. Klingshirn ◽  
...  
Keyword(s):  
Effective Mass ◽  
Carrier Density ◽  
Electron Effective Mass ◽  
Density Dependent
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