scholarly journals Role of substrate strain to tune energy bands–Seebeck relationship in semiconductor heterostructures

2021 ◽  
Vol 129 (2) ◽  
pp. 025301
Author(s):  
Vitaly S. Proshchenko ◽  
Manoj Settipalli ◽  
Artem K. Pimachev ◽  
Sanghamitra Neogi
Keyword(s):  
Semiconductor Heterostructures ◽  
Energy Bands ◽  
Substrate Strain

Electron Transport Through Epitaxial Metal/Semiconductor Heterostructures

1986 ◽  
Vol 77 ◽  
Author(s):  
A. F. J. Levi ◽  
R. T. Tung ◽  
J. L. Batstone ◽  
J. M. Gibson ◽  
M. Anzlowar ◽  
...  
Keyword(s):  
Electron Transport ◽  
Schottky Barrier ◽  
Semiconductor Heterostructures ◽  
Perfect Single Crystal ◽  
Barrier Heights ◽  
Semiconductor Interfaces ◽  
Semiconductor Contacts ◽  
First Time ◽  
Silicon Heterostructures

ABSTRACTAbrupt, epitaxial silicide/silicon heterostructures may be grown so that, for the first time, the physics of electron transport across near perfect, single crystal, metal/semiconductor interfaces may be probed experimentally. Transport measurements through type-A and -B oriented NiSi2 layers on Si(111) substrates have revealed Schottky barrier heights differing by 140 meV. In this paper we present results of experiments designed to explore the possible role of bulk and interface defects in determining the potential barrier at these near ideal epitaxial metal-semiconductor contacts. We have found little evidence for the presence of defects and the Schottky barrier is insensitive to details of the microscopic interfacial perfection. By contrast we find that both the electrical quality and magnitude of the barrier occurring at the NiSi2 /Si(100) heterojunction are dependent upon details of the microscopic interfacial perfection.

Role of the substrate strain in the sheet resistance stability of NiSi deposited on Si(100)

1999 ◽  
Vol 85 (7) ◽  
pp. 3614-3618 ◽  
Author(s):  
Eliane Maillard-Schaller ◽  
B. I. Boyanov ◽  
S. English ◽  
R. J. Nemanich
Keyword(s):  
Sheet Resistance ◽  
Substrate Strain ◽  
Resistance Stability

Velocity renormalization in graphene: The role of trigonal warping and electron–phonon coupling effects

2017 ◽  
Vol 31 (30) ◽  
pp. 1750235 ◽  
Author(s):  
B. S. Kandemir ◽  
N. Gökçek
Keyword(s):  
Analytical Solution ◽  
Fermi Velocity ◽  
Combined Effects ◽  
Phonon Coupling ◽  
Strong Anisotropy ◽  
Energy Bands ◽  
Phonon Modes ◽  
Electron Phonon Coupling ◽  
Trigonal Warping

We investigate the combined effects of trigonal warping and electron–phonon interactions on the renormalization of the Fermi velocity in graphene. We present an analytical solution to the associated Fröhlich Hamiltonian describing the interaction of doubly degenerate-optical phonon modes of graphene with electrons in the presence of trigonal warp within the framework of Lee–Low–Pines theory. On the basis of our model, it is analytically shown that in addition to its renormalization, Fermi velocity exhibits strong anisotropy due to the trigonal warping. It is also found that in the regime where the trigonal warp starts, distortion of energy bands emerges due to electron–phonon coupling, and the bands exhibit strong anisotropy.

The role of substrate strain in the mechanism of the carbon–carbon lyases

2014 ◽  
Vol 57 ◽  
pp. 198-205 ◽  
Author(s):  
Robert S. Phillips ◽  
Tatyana V. Demidkina ◽  
Nicolai G. Faleev
Keyword(s):  
Substrate Strain

Rough versus dilute interfaces in semiconductor heterostructures: The role of growth conditions

1994 ◽  
Vol 65 (10) ◽  
pp. 1287-1289 ◽  
Author(s):  
W. Grieshaber ◽  
C. Bodin ◽  
J. Cibert ◽  
J. Gaj ◽  
Y. Merle d’Aubigné ◽  
...  
Keyword(s):  
Growth Conditions ◽  
Semiconductor Heterostructures

scholarly journals Hyperbolic Plasmons Propagate through a Nodal Metal

2022 ◽  
Author(s):  
Yinming Shao ◽  
Aaron Sternbach ◽  
Brian Kim ◽  
Andrey Rikhter ◽  
Xinyi Xu ◽  
...  
Keyword(s):  
Light Propagation ◽  
Near Infrared ◽  
Surface States ◽  
Nodal Line ◽  
Infrared Light ◽  
Energy Bands ◽  
Optical Wavelengths ◽  
Hyperbolic Waves ◽  
Optical Waveguiding

Abstract Metals are canonical plasmonic media at infrared and optical wavelengths allowing one to guide and manipulate light at sub-diffractional length scales. A special form of optical waveguiding is offered by highly anisotropic crystals revealing different signs of the dielectric function along orthogonal directions. These latter types of media are classified as hyperbolic and many crystalline insulators, semiconductors and artificial metal-based metamaterials belong to that class. Layered anisotropic metals are also anticipated to support hyperbolic waveguiding. Yet this behavior remains elusive primarily because interband processes introduce extreme losses and arrest light propagation. Here, we report on the observation of propagating hyperbolic waves in a prototypical layered nodal-line semimetal ZrSiSe. The unique electronic structure with touching energy bands at nodal points/lines suppresses losses and enables a hyperbolic regime at the telecommunications frequencies. The observed waveguiding in metallic ZrSiSe is a product of polaritonic hybridization between near-infrared light and long-lived nodal-line plasmons. By mapping the energy-momentum dispersion of the nodal-line hyperbolic modes in ZrSiSe we inquired into the role of additional screening associated with the surface states.

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