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Several elements in the periodic table exhibit an interesting and often overlooked feature: They skip certain valence states which is discussed in the field of superconductivity to be in favor of fostering higher transition temperatures…

Superconductivity · Physics 2025-03-27 Yoshihiko Ihara , Masakazu Shimohashi , Markus Kriener

We report successful manipulation of non-classical atomic spin states. We generate squeezed spin states by a spin quantum nondemolition measurement, and apply an off-resonant circularly-polarized light pulse to the atoms. By changing the…

Quantum Physics · Physics 2015-05-14 Tetsushi Takano , Shin-Ichi-Ro Tanaka , Ryo Namiki , Yoshiro Takahashi

Atoms confined in a magnetic trap can escape by making spin-flip Majorana transitions due to a breakdown of the adiabatic approximation. Several papers have studied this process for atoms with spin $F = 1/2$ or $F= 1$. The present paper…

Quantum Physics · Physics 2009-11-13 D. M. Brink , C. V. Sukumar

The attenuation function S(t) for an ensemble of spins in a magnetic-field gradient is calculated by accumulation of the phase shifts in the rotating frame resulting from the displacements of spin-bearing particles. The found S(t),…

Statistical Mechanics · Physics 2017-01-11 V. Lisy , J. Tothova

Electric control of spins has been a longstanding goal in the field of solid state physics due to the potential for increased efficiency in information processing. This efficiency can be optimized by transferring spintronics to the atomic…

Mesoscale and Nanoscale Physics · Physics 2023-11-30 Piotr Kot , Maneesha Ismail , Robert Drost , Janis Siebrecht , Haonan Huang , Christian R. Ast

Numerical simulations of magnetization reversal of a quantum uniaxial magnet under a swept magnetic field [Hatomura, \textit{et al}., \textit{Quantum Stoner-Wohlfarth Model}, Phys. Rev. Lett. \textbf{116}, 037203 (2016)] are extended. In…

Mesoscale and Nanoscale Physics · Physics 2017-10-25 Takuya Hatomura , Bernard Barbara , Seiji Miyashita

We argue that nuclear magnetic resonance experiments are a site-sensitive probe for the electronic spectrum in the mixed state of the high-$T_c$ cuprates. Within a spin-fermion model, we show that the Doppler-shifted electronic spectrum…

Superconductivity · Physics 2009-10-31 Dirk K. Morr , Rachel Wortis

Nucleon-nucleon scattering observables are considered in the context of the large $N_c$ limit of QCD for initial states with moderately high momenta ($p \sim N_c$). The scattering is studied in the framework of the time-dependent mean-field…

Nuclear Theory · Physics 2009-11-07 Thomas D. Cohen , Boris A. Gelman

We study quantum trajectories of collective atomic spin states of $N$ effective two-level atoms driven with laser and cavity fields. We show that interesting ``entangled-state cycles'' arise probabilistically when the (Raman) transition…

Quantum Physics · Physics 2011-10-28 A. Chia , A. S. Parkins

The nucleon momentum distribution $n_A(k)$ for $A=$2, 3, 4, 16, and 40 nuclei is systematically analyzed in terms of wave functions resulting from advanced solutions of the nonrelativistic Schr\"{o}dinger equation, obtained within different…

Nuclear Theory · Physics 2013-03-19 M. Alvioli , C. Ciofi degli Atti , L. P. Kaptari , C. B. Mezzetti , H. Morita

The temperature and field dependences of the site-selective nuclear spin relaxation time T_1 around vortices are studied comparatively both for s-wave and d-wave superconductors, based on the microscopic Bogoliubov-de Gennes theory.…

Superconductivity · Physics 2009-10-31 Mitsuaki Takigawa , Masanori Ichioka , Kazushige Machida

The nuclear magnetic resonance (NMR) spectrum of spin-3/2 nuclei in a static magnetic field aligned with one of the electric field gradient (EFG) principal axes is developed analytically, based on fictitious spin-1/2 formalism. Compact…

Superconductivity · Physics 2024-12-17 Jaafar N. Ansari , Karen L. Sauer

The problem of spin precession in a time-dependent magnetic field is considered in the adiabatic approximation where the field direction or the angular velocity of its rotation is changing slowly. The precession angles are given by…

Quantum Physics · Physics 2016-09-08 M. S. Marinov , Eugene Strahov

This paper describes a general method for manipulation of nuclear spins in zero magnetic field. In the absence of magnetic fields, the spins lose the individual information on chemical shifts and inequivalent spins can only be distinguished…

Previous measurements with a single trapped proton or antiproton detected spin resonance from the increased scatter of frequency measurements caused by many spin flips. Here a measured correlation confirms that individual spin transitions…

Atomic Physics · Physics 2023-11-14 J. DiSciacca , M. Marshall , K. Marable , G. Gabrielse

Spin defects in solids, such as the nitrogen-vacancy (NV) center in diamond, have emerged as a key tool for detecting nuclear spins at the nanoscale. While active nuclear spin control via radio-frequency (RF) irradiation is often…

The time-dependent Schrodinger equation of a many particle spin system consisting of an electron in a quantum dot interacting with the spins of the nuclei (N) in the dot due to hyperfine interaction is solved exactly for a given arbitrary…

Quantum Physics · Physics 2007-05-23 A. K. Rajagopal

Pulsed magnetic resonance is a wide-reaching technology allowing the quantum state of electronic and nuclear spins to be controlled on the timescale of nanoseconds and microseconds respectively. The time required to flip either dilute…

Nuclear spins in certain solids couple weakly to their environment, making them attractive candidates for quantum information processing and inertial sensing. When coupled to the spin of an optically-active electron, nuclear spins can be…

Quantum Physics · Physics 2022-11-11 Alexander A. Wood , Russell M. Goldblatt , Robert E. Scholten , Andy M. Martin

We study the beam-normal single-spin asymmetry (BNSSA) in high-energy elastic electron scattering from several spin-0 nuclei. Existing theoretical approaches work in the plane-wave formalism and predict the BNSSA to scale as $\sim A/Z$ with…

Nuclear Theory · Physics 2021-06-23 Oleksandr Koshchii , Mikhail Gorchtein , Xavier Roca-Maza , Hubert Spiesberger
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