Results 41 to 50 of about 1,956,567 (332)

Quantum tunneling as a classical anomaly

, 2011
Classical mechanics is a singular theory in that real-energy classical particles can never enter classically forbidden regions. However, if one regulates classical mechanics by allowing the energy E of a particle to be complex, the particle exhibits ...
Anderson A G Bender C M Morone U I, Bender C M, Bender C M, Bender C M, Bender C M, Bender C M, Bender C M, Calogero F, Carl M Bender, Cavaglia A, Daniel W Hook, Graefe E M, Nanayakkara A, Smilga A V   +13 more
core   +1 more source

Deciphering Quantum Tunneling Dynamics: Insights from Sub-Barrier Interactions and Complex Time Analysis

Ultrafast Science
Quantum tunneling, a quintessential quantum phenomenon, challenges classical intuitions by allowing particles to pass through seemingly insurmountable barriers. This study delves into the intricate dynamics of electron tunneling, focusing on the critical
Xiwang Liu, Xiaokai Li, Yichong Lin, Shidong Yang, Ming Zhu, Xiaohong Song, Chuncheng Wang, Jing Chen, Weifeng Yang, Dajun Ding   +9 more
doaj   +1 more source

Strong quasi-particle tunneling study in the paired quantum Hall states

, 2001
The quasi-particle tunneling phenomena in the paired fractional quantum Hall states are studied. A single point-contact system is first considered.
Caldeira A. O., de Picciot R., Eisenstein J. P., Eisenstein J. P., Furusaki A., Greiter M., Gurarie V., Haldane F. D. M., Halperin B. I., Halperin F. D. M., Ho T. L., Imura K., Imura K., Imura K.-I., Jain J. K., Jiang H. W., Kane C. L., Lee J. C., Milliken F. P., Milovanovic M., Moore G., Morf R. H., Morinari T., Prange R. E., Pryadko L. P., Read N., Reznikov M., Shimshoni E., Tsui D. C., von Klitzing K., Wen X. G., Wen X. G., Wen X. G., Willet R. L., Yoshioka D.   +34 more
core   +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

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

Controlled Dephasing of a Quantum Dot: From Coherent to Sequential Tunneling

, 2006
Resonant tunneling through identical potential barriers is a textbook problem in quantum mechanics. Its solution yields total transparency (100% tunneling) at discrete energies.
Daniel Rohrlich, Diana Mahalu, Moty Heiblum, Oren Zarchin, R. P. Feynman, Vladimir Umansky   +5 more
core   +1 more source

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

Resonant Tunneling in a Dissipative Environment

, 2010
We measure tunneling through a single quantum level in a carbon nanotube quantum dot connected to resistive metal leads. For the electrons tunneling to/from the nanotube, the leads serve as a dissipative environment, which suppresses the tunneling rate ...
A. Makarovski, D. V. Averin, G. Finkelstein, G.-L. Ingold, H. Mebrahtu, I. Borzenets, L. I. Glazman, L. I. Glazman, L. P. Kouwenhoven, M. Pustilnik, Yu. Bomze   +10 more
core   +1 more source

Quantum tunneling with global charge [PDF]

Physical Review D, 1994
We investigate quantum tunneling in the theory of a complex scalar field with a global $U(1)$ symmetry when the charge density of the initial configuration does not vanish. We discuss the possible final configurations and set up the Euclidean path integral formalism to find the bubble nucleation and to study the bubble evolution.
openaire   +3 more sources

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