Results 41 to 50 of about 5,733 (288)

Spin-dependent tunneling through a symmetric semiconductor barrier

, 2003
The problem of electron tunneling through a symmetric semiconductor barrier based on zinc-blende-structure material is studied. The k(3) Dresselhaus terms in the effective Hamiltonian of bulk semiconductor of the barrier are shown to result in a ...
S. A. Tarasenko, Tarasenko, S., V. V. Bel’kov, Prettl, Wilhelm, Yassievich, I., V. I. Perel’, Belkov, Vassilij, I. N. Yassievich, W. Prettl, Perel', V., Ganichev, Sergey, S. D. Ganichev   +11 more
core   +1 more source

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Long-range quantum tunneling via matter waves

Communications Physics
Quantum tunneling is a quantum phenomenon in which a microscopic object crosses through a potential barrier even if its energy cannot overcome the barrier. A general belief is that tunneling occurs only when the barrier width is comparable to, or smaller
Yuan-Xing Yang, Si-Yuan Bai, Jun-Hong An
doaj   +1 more source

Dislocation Kinks in Copper: Widths, Barriers, Effective Masses, and Quantum Tunneling

, 2000
We calculate the widths, migration barriers, effective masses, and quantum tunneling rates of kinks and jogs in extended screw dislocations in copper, using an effective medium theory interatomic potential. The energy barriers and effective masses for moving a unit jog one lattice constant are close to typical atomic energies and masses: tunneling will
Vegge, Tejs, Sethna, James P., Cheong, Siew-Ann, Jacobsen, Karsten W., Myers, Christopher R., Ralph, Daniel C.   +5 more
openaire   +2 more sources

Resonant tunneling properties in the sawtooth triple barrier structures [PDF]

The resonance tunneling properties of sawtooth triple barrier double-well structures were investigated using the non-equilibrium Green's functions method.
Çoruh, Gonca, Batı, Mehmet
core   +1 more source

3D‐Printed Piezoionic/Bioelectronic Hydrogel for Electro‐Metabolic Regulation of Osteogenic Differentiation

Advanced Healthcare Materials, EarlyView.
A 3D‐printed piezoionic GPMx hydrogel enables stable electromechanical signal generation under mechanical loading, exhibiting long‐term durability and low fatigue. As a bioactive patch, it restores endogenous bioelectricity to stimulate osteogenesis via Ca2+ influx and mitochondrial activation, while simultaneously enabling label‐free alkaline ...
Sayan Deb Dutta, Myoung Joon Jeon, Youjin Seol, Ki‐Taek Lim   +3 more
wiley   +1 more source

Quenching effect of oscillating potential on anisotropic resonant transmission through a phosphorene electrostatic barrier

Scientific Reports, 2021
The anisotropy in resonant tunneling transport through an electrostatic barrier in monolayer black phosphorus either in presence or in absence of an oscillating potential is studied.
R. Biswas, C. Sinha
doaj   +1 more source

Quantum well width and barrier Thickness effects on the perpendicular transport in polar and non-polar oriented AlGaN/GaN Resonant Tunneling Diodes

2021 IEEE International Conference on Design & Test of Integrated Micro & Nano-Systems (DTS), 2021
In this study, we theoretically investigated the electronic properties of resonant tunneling diodes (RTDs) grown along the polar and non-polar orientations by using the self-consistent solution of the coupled Schrödinger and Poisson equations. Based on the transfer matrix formalism, the effects of the geometrical parameters on the current-voltage ...
Kacem, Nafaa, Bhouri, Amel, Lazzari, J.-L., Jaba, Nejeh   +3 more
openaire   +2 more sources

Modeling of electron tunneling through a tilted potential barrier

, 2017
Tunnel junctions are interesting for both studying fundamental physical phenomena and providing new technological applications. Modeling of the tunneling current is important for understanding the tunneling processes and interpreting experimental data ...
Puska, Martti J., Martti J. Puska, Zugarramurdi Camino, Asier, Noora Tuomisto, Tuomisto, Noora, Asier Zugarramurdi   +5 more
core   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source