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Elucidating spin correlations in the parent compounds of high-temperature superconductors is crucial for understanding superconductivity. We used neutron scattering to study spin correlations in Li$_{1-x}$Fe$_x$ODFeSe, an insulating…

Superconductivity · Physics 2025-01-06 Hongliang Wo , Bingying Pan , Die Hu , Yu Feng , A. D. Christianson , Jun Zhao

The relationships among charge order, spin fluctuations, and superconductivity in underdoped cuprates remain controversial. We use neutron scattering techniques to study these phenomena in La$_{1.93}$Sr$_{0.07}$CuO$_4$, a superconductor…

Superconductivity · Physics 2015-11-25 H. Jacobsen , I. A. Zaliznyak , A. T. Savici , B. L. Winn , S. Chang , M. Huecker , G. D. Gu , J. M. Tranquada

The effect of the hyperon softening of the equation of state (EOS) of dense matter on the spin evolution of isolated neutron stars is studied for a broad set of hyperonic EOSs. We use a multidomain 2-D code based on a spectral method, and…

Astrophysics · Physics 2009-11-10 J. L. Zdunik , P. Haensel , E. Gourgoulhon , M. Bejger

The deuteron break-up exclusive reaction $p+d \to N(180^{\circ}) + (NN)(0^{\circ})$ is considered in the framework of the one-nucleon-exchange mechanism at the incident proton kinetic energy 0.2--2 GeV and the relative energy of nucleons in…

Nuclear Theory · Physics 2007-05-23 A. V. Smirnov , Yu. N. Uzikov

Iron-based superconductors have been found to exhibit an intimate interplay of orbital, spin, and lattice degrees of freedom, dramatically affecting their low-energy electronic properties, including superconductivity. Albeit the precise…

We present a theoretical study of optical electron-spin orientation and spin-dependent Shockley-Read-Hall recombination taking into account the hyperfine coupling between the bound-electron spin and the nuclear spin of a deep paramagnetic…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 E. L. Ivchenko , L. A. Bakaleinikov , V. K. Kalevich

The D'yakonov-Perel' spin relaxation induced by the spin-orbit interaction is examined in disordered two-dimensional electron gas. It is shown that, because of the electron-electron interactions different spin relaxation rates can be…

Disordered Systems and Neural Networks · Physics 2010-11-16 Alexander Punnoose , Alexander M. Finkel'stein

We investigate the effects of spin-orbit coupling and Zeeman splitting on the coupled density-spin dynamics and collapse of the Bose-Einstein condensate driven by the quintic self-attraction in the same- and cross-spin channels. The…

Quantum Gases · Physics 2020-01-08 Jing Li , Boris A. Malomed , Wenliang Li , Xi Chen , E. Ya Sherman

A systematic and specific pattern due to the effects of the tensor forces is found in the evolution of spin-orbit splittings in neutron drops. This result is obtained from relativistic Brueckner-Hartree-Fock theory using the bare…

Nuclear Theory · Physics 2018-02-06 Shihang Shen , Haozhao Liang , Jie Meng , Peter Ring , Shuangquan Zhang

We report the discovery with XMM-Newton of 3-s X-ray pulsations from 3XMM J004232.1+411314, a dipping source that dominates the hard X-ray emission of M31. This finding unambiguously assesses the neutron star (NS) nature of the compact…

The effects of spin-orbit (SO) coupling arising from the confinement potential in single and two vertically-coupled quantum dots have been investigated. Our work indicates that a dot containing a single electron shows the lifting of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Anjana Bagga , Pekka Pietilainen , Tapash Chakraborty

Restoration of pseudo-spin symmetry (PSS) along the $N=32$ and $34$ isotonic chains and the physics behind are studied by applying the relativistic Hartree-Fock theory with effective Lagrangian PKA1. Taking the proton pseudo-spin partners…

Nuclear Theory · Physics 2019-09-04 Zheng Zheng Li , Shi Yao Chang , Qiang Zhao , Wen Hui Long , Yi Fei Niu

We report a large and unexpected suppression of the free electron spin relaxation in lightly-doped n-GaAs bulk crystals. The spin relaxation rate shows weak mobility dependence and saturates at a level 30 times less then that predicted by…

We have examined the intrinsic spin-orbit coupling (SOC) and orbital depairing in thin films of Nb-doped SrTiO$_3$ by superconducting tunneling spectroscopy. The orbital depairing is geometrically suppressed in the two-dimensional limit,…

Our predictions, based on density-functional calculations, reveal that surface doping of ZnO nanowires with Bi leads to a linear-in-$k$ splitting of the conduction-band states, through spin-orbit interaction, due to the lowering of the…

Materials Science · Physics 2017-06-07 Mehmet Aras , Sümeyra Güler-Kılıç , Çetin Kılıç

We have measured the spin fluctuations in the YBa2Cu3O6.5 (YBCO6.5, Tc=59 K) superconductor at high-energy transfers above ~ 100 meV. Within experimental error, the momentum dependence is isotropic at high-energies, similar to that measured…

Superconductivity · Physics 2015-05-20 C. Stock , R. A. Cowley , W. J. L. Buyers , C. D. Frost , J. W. Taylor , D. Peet , R. Liang , D. Bonn , W. N. Hardy

Electron spin relaxation induced by phonon-mediated s-d exchange interaction in a II-VI diluted magnetic semiconductor quantum dot is investigated theoretically. The electron-acoustic phonon interaction due to piezoelectric coupling and…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 W. Yang , K. Chang

The possibility that an unconventional depletion in the center of the charge density distribution of certain nuclei occurs due to a purely quantum mechanical effect has attracted theoretical and experimental attention in recent years. We…

Nuclear Theory · Physics 2017-04-06 T. Duguet , V. Somà , S. Lecluse , C. Barbieri , P. Navrátil

The electronic spin precession in semiconductor dots is strongly affected by the spin-orbit coupling. We present a theory of the electronic spin resonance at low magnetic fields that predicts a strong dependence on the dot occupation, the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Manuel Valin-Rodriguez , Antonio Puente , Llorens Serra , Enrico Lipparini

Neutron shell-structure and the resulting possible deformation in the neighborhood of neutron-drip-line nuclei are systematically discussed, based on both bound and resonant neutron one-particle energies obtained from spherical and deformed…

Nuclear Theory · Physics 2012-07-11 Ikuko Hamamoto