Results 1 to 10 of about 40,972 (169)

Quantum magnetic J-oscillators. [PDF]

Nat Commun
Abstract Zero-field nuclear magnetic resonance (NMR) offers magnet-free access to nuclear spin-spin (scalar J ) couplings, which define an intrinsic, molecule-specific frequency scale.
Xu J, Kircher R, Tretiak O, Budker D, Barskiy DA.   +4 more
europepmc   +6 more sources

Influence temperature and strong magnetic field on oscillations of density of energy states in heterostructures with quantum wells Hgcdte/Cdhgte [PDF]

E3S Web of Conferences, 2023
For the first time, the influence of temperature and a transverse strong magnetic field on the oscillations of the density of energy states is studied in the conduction band of heterostructures with quantum wells HgCdTe/CdHgTe. Analytical expressions are
Erkaboev U. I., Sayidov N. A., Negmatov U. M., Mirzaev J. I., Rakhimov R. G.   +4 more
doaj   +1 more source

Mathematical modeling of the physical mechanism of wave flux generation at the photospheric level for different stages of the solar activity cycle [PDF]

Известия Саратовского университета. Новая серия: Физика, 2022
Background and Objectives: The nonlinear phase of the development of Parker’s instability of large-scale oscillations of magnetic fields at various depths of the convective zone of the Sun up to the stage of saturation is investigated.
Stepanov, Evgeniy Alexandrovich, Mayorov, Alexander Olegovich, Romanov, Konstantin Valeryevich, Romanov, Dmitriy Valeryevich, Romanov, Valeriy Alexandrovich   +4 more
doaj   +1 more source

Propagation Properties of Sunspots Umbral Oscillations in Horizontal and Vertical Directions

The Astrophysical Journal, 2023
We present a study on investigating the propagation characteristics of umbral oscillations in sunspots. In sunspot 1 (located in NOAA AR 12127) with four umbrae, the analysis shows that the oscillations in different umbrae are correlated.
Wei Wu, Jiang-tao Su, Jie Chen, Xiao-shuai Zhu, Robert Sych   +4 more
doaj   +1 more source

Aharonov–Bohm oscillations and equilibrium current distributions in open quantum dot and in ring interferometer [PDF]

Modern Electronic Materials, 2020
Magnetotransport in two submicron-sized devices formed on the basis of GaAs/AlGaAs structures has been simulated using nonequilibrium Green functions. The effect of a perpendicular magnetic field on quantum transport in a quasi-one-dimensional quantum ...
Olga A. Tkachenko, Dmitry G. Baksheev, Vitaly A. Tkachenko   +2 more
doaj   +3 more sources

Magnetic Quantum Oscillations in Nanowires [PDF]

Physical Review Letters, 2005
Analytical expressions for the magnetization and the longitudinal conductivity of nanowires are derived in a magnetic field, B. We show that the interplay between size and magnetic field energy-level quantizations manifests itself through novel magnetic quantum oscillations in metallic nanowires.
Alexandrov, A. S., Kabanov, V. V.
openaire   +3 more sources

Magnetic Bloch oscillations and domain wall dynamics in a near-Ising ferromagnetic chain

Nature Communications, 2022
An electron subject to a periodic potential and a constant electric field exhibit oscillatory dynamics, known as Bloch oscillations. Here, the authors demonstrate a magnetic analogue of Bloch oscillations in a ferromagnetic near-Ising chain, where ...
Ursula B. Hansen, Olav F. Syljuåsen, Jens Jensen, Turi K. Schäffer, Christopher R. Andersen, Martin Boehm, Jose A. Rodriguez-Rivera, Niels B. Christensen, Kim Lefmann   +8 more
doaj   +1 more source

p-Mode Oscillations in Highly Gravitationally Stratified Magnetic Solar Atmospheres

Physics, 2023
The aim of the study reported in this paper is to gain understanding of solar global oscillations and the propagation characteristics of p-mode oscillations in the highly gravitationally stratified magnetic solar atmosphere.
Michael Griffiths, Norbert Gyenge, Ruisheng Zheng, Marianna Korsós, Robertus Erdélyi   +4 more
doaj   +1 more source

Magnetic Oscillations in a Model of Graphene [PDF]

Communications in Mathematical Physics, 2019
We consider a quantum graph as a model of graphene in constant magnetic field and describe the density of states in terms of relativistic Landau levels satisfying a Bohr--Sommerfeld quantization condition. That provides semiclassical corrections (with the magnetic flux as the semiclassical parameter) in the study of magnetic oscillations.
Simon Becker, Maciej Zworski
openaire   +2 more sources

Quantum oscillations in a molecular magnet [PDF]

Nature, 2008
The term 'molecular magnet' generally refers to a molecular entity containing several magnetic ions whose coupled spins generate a collective spin, S (ref. 1). Such complex multi-spin systems provide attractive targets for the study of quantum effects at the mesoscopic scale.
Bertaina, S., Gambarelli, S., Mitra, T., Tsukerblat, B., Müller, A., Barbara, B.   +5 more
openaire   +5 more sources