Acoustic phonon spectroscopy with superconductor tunnel junctions of low-energy defect excitations in semiconductors

2007 ◽  
pp. 79-98 ◽  
Author(s):  
K. LaΒmann
Keyword(s):  
Acoustic Phonon ◽  
Tunnel Junctions ◽  
Low Energy

scholarly journals Nanosecond-Timescale Low Energy Switching of In-Plane Magnetic Tunnel Junctions through Dynamic Oersted-Field-Assisted Spin Hall Effect

Nano Letters ◽  
2016 ◽  
Vol 16 (10) ◽  
pp. 5987-5992 ◽  
Author(s):  
S. V. Aradhya ◽  
G. E. Rowlands ◽  
J. Oh ◽  
D. C. Ralph ◽  
R. A. Buhrman
Keyword(s):  
Hall Effect ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Low Energy ◽  
Spin Hall Effect

scholarly journals Quantum tunneling theory of Cooper pairs as bosonic particles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Edgar J. Patiño ◽  
Daniel Lozano-Gómez
Keyword(s):  
Quantum Tunneling ◽  
Alternative Explanation ◽  
Tunnel Junctions ◽  
Tunneling Current ◽  
Phenomenological Theory ◽  
Low Energy ◽  
Cooper Pairs ◽  
Zero Bias ◽  
Conductance Peak ◽  
Zero Bias Conductance

AbstractWe propose a simple phenomenological theory for quantum tunneling of Cooper pairs, in superconductor/insulator/superconductor tunnel junctions, for a regime where the system can be modeled as bosonic particles. Indeed, provided there is an absence of quasiparticle excitations (fermions), our model reveals a rapid increase in tunneling current, around zero bias voltage, which rapidly saturates. This manifests as a zero bias conductance peak that strongly depends on the superconductors temperature in a non-monotonic way. This low energy tunneling of Cooper pairs could serve as an alternative explanation for a number of tunneling experiments where zero bias conductance peak has been observed.

Modeling of Phonon Dispersion in a Semiconductor Quantum Dot Crystal

2002 ◽  
Vol 731 ◽  
Author(s):  
Olga L. Lazarenkova ◽  
Alexander A. Balandin
Keyword(s):  
Quantum Dot ◽  
Phonon Spectrum ◽  
Acoustic Phonon ◽  
Phonon Dispersion ◽  
Three Dimensional ◽  
Semiconductor Quantum Dots ◽  
Low Energy ◽  
Band Formation ◽  
Carrier Relaxation ◽  
Semiconductor Quantum Dot

AbstractWe describe a model for numerical calculation of phonon spectrum in a three-dimensional regimented array of semiconductor quantum dots. Regimentation and possibility of carrier mini-band formation make this structure analogous to a crystal, e.g.quantum dot crystal. It is demonstrated that the acoustic phonon dispersion undergoes strong modification in such a structure leading to emergence of low-energy quasi-optical branches. Strong phonon spectrum modification is expected to affect carrier relaxation and transport properties.

Low energy dynamics of two-dimensional lateral tunnel junctions

2006 ◽  
Vol 34 (1-2) ◽  
pp. 203-205
Author(s):  
P. Jiang ◽  
I. Yang ◽  
W. Kang ◽  
L.N. Pfeiffer ◽  
K.W. Baldwin ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Low Energy ◽  
Two Dimensional ◽  
Energy Dynamics ◽  
Lateral Tunnel
Sign in / Sign up

Export Citation Format

Share Document