Results 21 to 30 of about 1,072,800 (324)

Heat rectification through single and coupled quantum dots

New Journal of Physics, 2022
We study heat rectification through quantum dots in the Coulomb blockade regime using a master equation approach. We consider both cases of two-terminal and four-terminal devices. In the two-terminal configuration, we analyze the case of a single quantum
Ludovico Tesser, Bibek Bhandari, Paolo Andrea Erdman, Elisabetta Paladino, Rosario Fazio, Fabio Taddei   +5 more
doaj   +1 more source

Quantum state–resolved molecular dipolar collisions over four decades of energy [PDF]

Science, 2023
Collisions between cold polar molecules represent a fascinating research frontier but have proven hard to probe experimentally. We report measurements of inelastic cross sections for collisions between nitric oxide (NO) and deuterated ammonia (ND3 ...
Guoqiang Tang, Matthieu Besemer, S. Kuijpers, G. Groenenboom, A. van der Avoird, T. Karman, S. V. D. van de Meerakker   +6 more
semanticscholar   +1 more source

Class of distorted Landau levels and Hall phases in a two-dimensional electron gas subject to an inhomogeneous magnetic field

Physical Review Research, 2022
An analytic closed form solution is derived for the bound states of a two-dimensional electron gas subject to a static, inhomogeneous (1/r in plane decaying) magnetic field, including the Zeeman interaction.
Dominik Sidler, Vasil Rokaj, Michael Ruggenthaler, Angel Rubio   +3 more
doaj   +1 more source

Energy eigenvalues and finite-temperature magnetization for the improved Scarf II potential in the presence of external magnetic and Aharonov-Bohm flux fields

Heliyon, 2023
In this paper, the bound state solutions of the radial Schrödinger equation are obtained in closed form under an improved Scarf II potential energy function (ISPEF) constrained by external magnetic and Aharonov-Bohm (AB) flux fields.
E.S. Eyube, P.P. Notani, C.A. Onate, U. Wadata, E. Omugbe, B.M. Bitrus, S.D. Najoji   +6 more
doaj   +1 more source

Toward relaxation asymmetry: Heating is faster than cooling

Physical Review Research, 2021
An asymmetry in thermal relaxation toward equilibrium has been uncovered for Langevin systems near stable minima [Phys. Rev. Lett. 125, 110602 (2020)10.1103/PhysRevLett.125.110602].
Tan Van Vu, Yoshihiko Hasegawa
doaj   +1 more source

Vacuum-field-induced state mixing

SciPost Physics, 2023
By engineering the electromagnetic vacuum field, the induced Casimir-Polder shift (also known as Lamb shift) and spontaneous emission rates of individual atomic levels can be controlled. When the strength of these effects becomes comparable to the energy
Diego Fernández de la Pradilla, Esteban Moreno, Johannes Feist
doaj   +1 more source

Impact of Nd Doping on Electronic, Optical, and Magnetic Properties of ZnO: A GGA + U Study

Molecules, 2023
The electronic, optical, and magnetic properties of Nd-doped ZnO systems were calculated using the DFT/GGA + U method. According to the results, the Nd dopant causes lattice parameter expansion, negative formation energy, and bandgap narrowing, resulting
Qiao Wu, Gaihui Liu, Huihui Shi, Bohang Zhang, Jing Ning, Tingting Shao, Suqin Xue, Fuchun Zhang   +7 more
doaj   +1 more source

Anomalous discrete flavor symmetry and domain wall problem

Physics Letters B, 2019
Discrete flavor symmetry is often introduced for explaining quark/lepton masses and mixings. However, its spontaneous breaking leads to the appearance of domain walls, which is problematic for cosmology. We consider a possibility that the discrete flavor
So Chigusa, Kazunori Nakayama
doaj   +1 more source

Relativistic Landau quantization in non-uniform magnetic field and its applications to white dwarfs and quantum information

SciPost Physics, 2021
We investigate the two-dimensional motion of relativistic cold electrons in the presence of ‘strictly’ spatially varying magnetic fields satisfying, however, no magnetic monopole condition.
Srishty Aggarwal, Banibrata Mukhopadhyay, Gianluca Gregori
doaj   +1 more source

Theory of noninteracting fermions and bosons in the canonical ensemble

Physical Review Research, 2020
We present a self-contained theory for the exact calculation of particle number counting statistics of noninteracting indistinguishable particles in the canonical ensemble.
Hatem Barghathi, Jiangyong Yu, Adrian Del Maestro   +2 more
doaj   +1 more source