Decrease of the tunneling time and violation of the Hartman effect for large barriers

2004 ◽  
Vol 70 (3) ◽  
Author(s):  
V. S. Olkhovsky ◽  
V. Petrillo ◽  
A. K. Zaichenko
Keyword(s):  
Tunneling Time ◽  
Hartman Effect

Tunneling time, the Hartman effect, and superluminality: A proposed resolution of an old paradox

2006 ◽  
Vol 436 (1-2) ◽  
pp. 1-69 ◽  
Author(s):  
Herbert G. Winful
Keyword(s):  
Tunneling Time ◽  
Hartman Effect

Spin-dependent tunneling time and Hartman effect in silicene

2018 ◽  
Vol 103 ◽  
pp. 279-283 ◽  
Author(s):  
Farhad Sattari ◽  
Mohammad Hamdipour
Keyword(s):  
Tunneling Time ◽  
Hartman Effect

On the tunneling time of arbitrary continuous potentials and the Hartman effect

2010 ◽  
Vol 19 (11) ◽  
pp. 117305 ◽  
Author(s):  
Cheng Yin ◽  
Zhi-Jing Wu ◽  
Xian-Ping Wang ◽  
Jing-Jing Sun ◽  
Zhuang-Qi Cao
Keyword(s):  
Tunneling Time ◽  
Hartman Effect

scholarly journals Analysis of wavepacket tunneling with the method of Laplace transformation

2019 ◽  
Vol 33 (12) ◽  
pp. 1950107 ◽  
Author(s):  
Natascha Riahi
Keyword(s):  
Laplace Transformation ◽  
Experimental Result ◽  
Tunneling Time ◽  
Hartman Effect ◽  
Subsequent Wave

We use the method of Laplace transformation to determine the dynamics of a wavepacket that passes a barrier by tunneling. We investigate the transmitted wavepacket and find that it can be resolved into a sequence of subsequent wave packages. This result sheds new light on the Hartman effect for the tunneling time and gives a possible explanation for an experimental result obtained by Spielmann et al.

The Hartman effect in graphene systems

2017 ◽  
Vol 31 (01) ◽  
pp. 1650250 ◽  
Author(s):  
Mohammad Esmailpour ◽  
Hakimeh Mohammadpour ◽  
Hamideh Hadavifar
Keyword(s):  
Incident Energy ◽  
Energy Levels ◽  
Single Layer ◽  
Normal Incidence ◽  
Bilayer Graphene ◽  
Single Layer Graphene ◽  
Monolayer Graphene ◽  
Tunneling Time ◽  
Layer Graphene ◽  
Hartman Effect

The present paper investigates that the tunneling time for bilayer graphene potential barrier with monolayer graphene leads to all range of energy. Numerical results reveal that parameters such as the incident energy and angle plays a significant role in inducing of the Hartman effect. In contrast to single-layer graphene, in the bilayer graphene, due to the chirality of quasi-particles induction of Klein and Hartman effects occur in the normal incidence case. Moreover, it is demonstrated that even for energy levels above barrier, the Hartman effect is present.

scholarly journals Tunneling time and Hartman effect in a ferromagnetic graphene superlattice

AIP Advances ◽  
2012 ◽  
Vol 2 (1) ◽  
pp. 012123 ◽  
Author(s):  
Farhad Sattari ◽  
Edris Faizabadi
Keyword(s):  
Tunneling Time ◽  
Hartman Effect ◽  
Graphene Superlattice

Tunneling-time properties in type II quantum resonant structures

1996 ◽  
Vol 32 (11) ◽  
pp. 1932-1936 ◽  
Author(s):  
D. Dragoman ◽  
M. Dragoman
Keyword(s):  
Tunneling Time ◽  
Type Ii ◽  
Resonant Structures

scholarly journals Faraday and Kerr Effects in Right and Left-Handed Films and Layered Materials

2020 ◽  
Vol 59 (1) ◽  
pp. 243-251
Author(s):  
Josh Lofy ◽  
Vladimir Gasparian ◽  
Zhyrair Gevorkian ◽  
Esther Jódar
Keyword(s):  
Kerr Effect ◽  
Tunneling Time ◽  
The Real ◽  
Left Handed ◽  
Faraday Rotation Angle ◽  
Time Problem ◽  
Kerr Angle ◽  
Polarization Of Light ◽  
Effect Of Light ◽  
Forbidden Gap

AbstractIn the present work, we study the rotations of the polarization of light propagating in right and left-handed films and layered structures. Through the use of complex values representing the rotations we analyze the transmission (Faraday effect) and reflections (Kerr effect) of light. It is shown that the real and imaginary parts of the complex angle of Faraday and Kerr rotations are odd and even functions for the refractive index n, respectively. In the thin film case with left-handed materials there are large resonant enhancements of the reflected Kerr angle that could be obtained experimentally. In the magnetic clock approach, used in the tunneling time problem, two characteristic time components are related to the real and imaginary portions of the complex Faraday rotation angle . The complex angle at the different propagation regimes through a finite stack of alternating right and left-handed materials is analyzed in detail. We found that, in spite of the fact that Re(θ) in the forbidden gap is almost zero, the Im(θ) changes drastically in both value and sign.

Asymmetry and separation of spin tunneling time in ZnSe/Zn1-xMnxSe multilayers

2001 ◽  
Vol 23 (4) ◽  
pp. 509-513 ◽  
Author(s):  
Y. Guo ◽  
B. Wang ◽  
B.-L. Gu ◽  
Y. Kawazoe
Keyword(s):  
Tunneling Time ◽  
Spin Tunneling

Decoherent-history approach to the probability distribution of tunneling time

2008 ◽  
Vol 77 (4) ◽  
Author(s):  
S. Boonchui ◽  
V. Sa-yakanit
Keyword(s):  
Probability Distribution ◽  
Tunneling Time ◽  
History Approach
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