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We introduce a lattice model for a classical doped two dimensional antiferromagnet which has no quenched disorder, yet displays slow dynamics similar to those observed in supercooled liquids. We calculate two-time spatial and spin…

无序系统与神经网络 · 物理学 2009-11-10 Malcolm P. Kennett , Claudio Chamon , Leticia F. Cugliandolo

The Nitrogen-Vacancy (NV) defect in diamond is a unique quantum system that offers precision sensing of nanoscale physical quantities beyond the current state-of-the-art. Here we present a method to controllably encode the interactions in…

Novel magnetic structures with precisely controlled dimensions and shapes at the nanoscale have potential applications in spin logic, spintronics and other spin-based communication devices. We report the fabrication of two-dimensional…

介观与纳米尺度物理 · 物理学 2019-01-29 Nikita Porwal , Sucheta Mondal , Samiran Choudhury , Anulekha De , Jaivardhan Sinha , Anjan Barman , Prasanta Kumar Datta

We develop a fully relativistic framework to study the rotational response of gravitationally coupled two-fluid neutron stars within the slow-rotation approximation. Treating the two components as independently conserved perfect fluids…

高能天体物理现象 · 物理学 2026-03-16 Ankit Kumar , Hajime Sotani

Recently, it has been proposed a new method [arXiv:2405.21029] to detect quantum gravity effects, based on generating gravitational entanglement between two nano-diamonds with Nitrogen-Vacancy defects, in a magnetically trapped…

The stable vortex state that occurs in micron-scale magnetic disks is one of the most interesting and potentially useful phenomenon in nanomagnetism. A variety of tools have been applied to study the vortex state, and collective spin…

介观与纳米尺度物理 · 物理学 2020-07-07 P. H. Kim , F. Fani Sani , M. R. Freeman , J. P. Davis

We theoretically propose a method to realize optical nonreciprocity in rotating nano-diamond with a nitrogen-vacancy (NV) center. Because of the relative motion of the NV center with respect to the propagating fields, the frequencies of the…

量子物理 · 物理学 2022-08-12 Hong-Bo Huang , Jun-Jie Lin , Yi-Xuan Yao , Ke-Yu Xia , Zhang-Qi Yin , Qing Ai

The scheme recently proposed in [M. Scala et al., Phys Rev Lett 111, 180403 (2013)], where a gravity-dependent phase shift is induced on the spin of a nitrogen-vacancy (NV) center in a trapped nanodiamond by the interaction between its…

量子物理 · 物理学 2016-05-04 C. Wan , M. Scala , S. Bose , A. C. Frangeskou , ATM A. Rahman , G. W. Morley , P. F. Barker , M. S. Kim

We present a systematic stability analysis for the two-dimensional Hubbard model, which is based on a new renormalization group method for interacting Fermi systems. The flow of effective interactions and susceptibilities confirms the…

强关联电子 · 物理学 2009-10-31 Christoph J. Halboth , Walter Metzner

We have performed $^{75}$As and $^{23}$Na nuclear magnetic resonance (NMR) measurements on a single crystal of NaFe$_{0.9835}$Co$_{0.0165}$As and found microscopic coexistence of superconductivity with a two-component spin density wave…

We study spin and charge dynamics of stripes in doped Mott insulators by considering a two-dimensional Hubbard model with N fermion flavors. For N =2 we recover the normal one-band model while for N -> infty a spin density wave mean-field…

强关联电子 · 物理学 2009-11-07 F. F. Assaad , V. Rousseau , F. Hebert , M. Feldbacher , G. G. Batrouni

The detection of gravitational waves from merging binaries has ushered in the era of gravitational wave interferometer astronomy. Besides these strong, transient, calamitous events, much weaker signals can be detected if the oscillations…

宇宙学与河外天体物理 · 物理学 2021-04-26 Juan Manuel Armaleo , Diana López Nacir , Federico R. Urban

We investigated the role that the electron-electron interaction plays on the propagating properties of wave packets in a one-dimensional crystal with impurities. We considered two interacting particles with opposite spins in a band, where…

无序系统与神经网络 · 物理学 2007-05-23 P. E. de Brito , E. S. Rodrigues , H. N. Nazareno

Rotations play a detrimental role in achieving ultra-high-performance inertial measurements with an atom interferometer, leading potentially to a total loss of interference contrast and the emergence of dominant phase shift biases. This…

Over the last decade, frequency-domain in-situ high-pressure nuclear magnetic resonance (NMR) spectroscopy in diamond anvil cells (DACs) has been employed as a structural and electronic probe of condensed matter systems at pressures well…

仪器与探测器 · 物理学 2026-01-08 Thomas Meier , Meng Yang , Yishan Zhou , Yunhua Fu , Rui Zhang , Ziliang Wang , Tianyao Zheng , Rajesh Jana , Takeshi Nakagawa

Dark matter or modifications of the Newtonian inverse-square law in the solar-system are studied with accurate planetary astrometric data. From extra-perihelion precession and possible changes in the third Kepler's law, we get an upper…

天体物理学 · 物理学 2009-11-11 M. Sereno , Ph. Jetzer

We present experimental, numerical, and theoretical evidence for a new mode of antiferromagnetic dynamics in nanoparticles. Elastic neutron scattering experiments on 8 nm particles of hematite display a loss of diffraction intensity with…

We investigate the structural, dynamical, and oscillatory properties of neutron stars admixed with dark matter, modeled via a single-fluid formalism where dark matter interacts with nuclear matter through an effective Higgs-portal coupling.…

高能天体物理现象 · 物理学 2025-06-03 Ankit Kumar , Hajime Sotani

We study experimentally and theoretically a dense ensemble of negatively charged nitrogen-vacancy centers in diamond coupled to a high $Q$ superconducting coplanar waveguide cavity mode at low temperature. The nitrogen-vacancy centers are…

量子物理 · 物理学 2013-05-30 K. Sandner , H. Ritsch , R. Amsüss , Ch. Koller , T. Nöbauer , S. Putz , J. Schmiedmayer , J. Majer

We demonstrate quantum coherent control of a single electron spin in a NV center in diamond using the Landau-Zener-Stuckelberg interferometry at room temperature. Interference pattern is observed oscillating as a function of microwave…

量子物理 · 物理学 2012-03-08 Pu Huang , Jingwei Zhou , Fang Fang , Xi Kong , Xiangkun Xu , Chenyong Ju , Jiangfeng Du