Results 51 to 60 of about 1,987,784 (294)

Magnetization relaxation in the single-ion magnet DySc2N@C80: quantum tunneling, magnetic dilution, and unconventional temperature dependence

Physical Chemistry, Chemical Physics - PCCP, 2018
Quantum tunneling and relaxation of magnetization in single molecule magnet DySc2N@C80 is thoroughly studied as a function of magnetic dilution, temperature, and magnetic field.
D. Krylov, Fupin Liu, Ariane Brandenburg, L. Spree, V. Bon, Stefan Kaskel, Anja U. B. Wolter, Bernd Büchner, S. Avdoshenko, Alexey A. Popov   +9 more
semanticscholar   +1 more source

Enhanced current injection from a quantum well to a quantum dash in magnetic field

New Journal of Physics, 2014
Resonant tunneling injection is a key ingredient in achieving population inversion in a putative quantum dot cascade laser. In a quantum dot based structure, such resonant current requires a matching of the wavefunction shape in k -space between the ...
Gian L Paravicini-Bagliani, Valeria Liverini, Federico Valmorra, Giacomo Scalari, Fabian Gramm, Jérôme Faist   +5 more
doaj   +1 more source

Quasiparticle transport and g factor anisotropy in quantum dots [PDF]

, 2014
Current computer systems encode data in sequences of the binary unit, the bit. The quest of designing faster processors is one of the most important in modern society.
Zielke, Robert
core   +1 more source

Direct Observation of Double Hydrogen Transfer via Quantum Tunneling in a Single Porphycene Molecule on a Ag(110) Surface.

Journal of the American Chemical Society, 2017
Quantum tunneling of hydrogen atoms (or protons) plays a crucial role in many chemical and biological reactions. Although tunneling of a single particle has been examined extensively in various one-dimensional potentials, many-particle tunneling in high ...
M. Koch, Mark Pagan, M. Persson, S. Gawinkowski, J. Waluk, T. Kumagai   +5 more
semanticscholar   +1 more source

Formation of Quantum Phase Slip Pairs in Superconducting Nanowires

Physical Review X, 2015
Macroscopic quantum tunneling is a fundamental phenomenon of quantum mechanics related to the actively debated topic of quantum-to-classical transition.
A. Belkin, M. Belkin, V. Vakaryuk, S. Khlebnikov, A. Bezryadin   +4 more
doaj   +1 more source

Physics of manipulation of spin dynamics in a driven double well made transparent

Results in Physics, 2022
We study the coherent manipulation of quantum spin dynamics via simple analytic solutions for a spin–orbit (SO) coupled ultracold atom held in a driven double well.
Wenjuan Li, Haochuan Yin, Jia Yi, Yuxin Luo, Xin Xie, Wenhua Hai, Yunrong Luo   +6 more
doaj   +1 more source

Few-fermion resonant tunneling and underbarrier trapping in asymmetric potentials

Communications Physics
Understanding quantum tunneling in many-body systems is crucial for advancing quantum technologies and nanoscale device design. Despite extensive studies of quantum tunneling, the role of interactions in determining directional transport through ...
Elvira Bilokon, Valeriia Bilokon, Dusty R. Lindberg, Lev Kaplan, Andrii Sotnikov, Denys I. Bondar   +5 more
doaj   +1 more source

Observation of optical tunneling inhibition by a parabolic potential in twisted photonic lattices

Physical Review Research, 2022
Quantum tunneling is considered the cornerstone of many physical processes. So far, its evolution over time, especially under an external field superimposed on the periodic potential field, has not been directly observed experimentally due to the harsh ...
Weijie Liu, Bin Zhang, Bo Wu, Lei Wang, Feng Chen   +4 more
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Theory of quantum-circuit refrigeration by photon-assisted electron tunneling [PDF]

, 2017
We focus on a recently experimentally realized scenario of normal-metal-insulator-superconductor tunnel junctions coupled to a superconducting resonator. We develop a first-principles theory to describe the effect of photon-assisted electron tunneling on
M. Silveri, H. Grabert, S. Masuda, K. Tan, M. Mottonen   +4 more
semanticscholar   +1 more source