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We investigated the double-exchange spin ice (DESI) model on a kagom\'e lattice by Monte Carlo simulation to study the effects of a geometrical frustration, and the mechanism that generates an ordered state in a metallic system. The DESI…

强关联电子 · 物理学 2009-11-10 Yoshihiro Shimomura , Shin Miyahara , Nobuo Furukawa

The \textit{Spirit} framework is designed for atomic scale spin simulations of magnetic systems of arbitrary geometry and magnetic structure, providing a graphical user interface with powerful visualizations and an easy to use scripting…

The electron spin resonance (ESR) spectroscopy was employed to investigate the spin dynamics in triangular lattice antiferromagnets CuCr$_{1-x}$Mg$_{x}$O$_2$ with $x =$ 0 and 0.02. All spectra can be well fitted by a single Lorentzian…

强关联电子 · 物理学 2012-07-16 Renwen Li , Zhe Qu , Wei Tong , Yuheng Zhang

Spin squeezing is a form of entanglement that reshapes the quantum projection noise to improve measurement precision. Here, we provide numerical and analytic evidence for the following conjecture: any Hamiltonian exhibiting finite…

Skyrmions are prospected as the potential future of data storage due to their topologically protected spin structures. However, traditional ferromagnetic (FM) skyrmions experience deflection when driven with an electric current, hindering…

材料科学 · 物理学 2023-05-08 Amal Aldarawsheh , Moritz Sallermann , Muayad Abusaa , Samir Lounis

Two-dimensional (2D) magnetic materials have attracted much recent interest with unique properties emerging at the few-layer limit. Beyond the reported impacts on the static magnetic properties, the effects of reducing the dimensionality on…

介观与纳米尺度物理 · 物理学 2021-06-10 Xiao-Xiao Zhang , Shengwei Jiang , Jinhwan Lee , Changgu Lee , Kin Fai Mak , Jie Shan

The three-dimensional $S = {\frac{1}{2}}$ system Y$_{3}$Cu$_{2}$Sb$_{3}$O$_{14}$ consists of two inequivalent Cu$^{2+}$ sites, each forming an edge shared triangular lattice. Our magnetic susceptibility $\chi(T)$, specific heat $C_p(T)$,…

Modifying the conventional spin-wave theory in a novel manner based on the Wick decomposition, we present an elaborate thermodynamics of square-lattice quantum antiferromagnets. Our scheme is no longer accompanied by the notorious problem…

强关联电子 · 物理学 2019-03-13 Shoji Yamamoto , Yusaku Noriki

We present a lattice calculation of the neutron and proton electric dipole moments (EDM's) with $N_f=2+1$ flavors of domain-wall fermions. The neutron and proton EDM form factors are extracted from three-point functions at the…

高能物理 - 格点 · 物理学 2016-05-11 Eigo Shintani , Thomas Blum , Taku Izubuchi , Amarjit Soni

We study the low-temperature physics of the $SU(2)$-symmetric spin-$1/2$ Heisenberg antiferromagnet on a pyrochlore lattice and find fingerprint evidence for the thermal spin-ice state in this frustrated quantum magnet. Our conclusions are…

强关联电子 · 物理学 2016-05-04 Yuan Huang , Kun Chen , Youjin Deng , Nikolay Prokof'ev , Boris Svistunov

Quantum non-demolition (QND) measurement enhances the detection efficiency and measurement fidelity, and is highly desired for its applications in precision measurements and quantum information processing. We propose and demonstrate a QND…

原子物理 · 物理学 2025-07-11 Y. A. Yang , T. A. Zheng , S. -Z. Wang , W. -K. Hu , Chang-Ling Zou , T. Xia , Z. -T. Lu

By means of the recently developed algorithm based on the tensor product states, the magnetization process of frustrated spin-1/2 spin-dimer models on a square lattice is investigated. Various field-induced quantum phases are discovered. In…

强关联电子 · 物理学 2010-01-26 Pochung Chen , Chen-Yen Lai , Min-Fong Yang

Central spin decoherence is useful for detecting many-body physics in environments and moreover, the spin echo control can remove the effects of static thermal fluctuations so that the quantum fluctuations are revealed. The central spin…

介观与纳米尺度物理 · 物理学 2014-04-17 Shao-Wen Chen , Ren-Bao Liu

We study a system of two electron spins each interacting with its small nuclear spin environment (NSE), which is a prototype system of two electron spin quantum dot (QD) qubits. We propose a way to counteract the decay of entanglement in…

介观与纳米尺度物理 · 物理学 2021-10-27 Igor Bragar

We propose a scheme to perform single-shot quantum non-demolition (QND) readout of the spin of an electron trapped in a semiconductor quantum dot (QD). Our proposal relies on the interaction of the QD electron spin with optically excited,…

量子物理 · 物理学 2014-10-22 Shruti Puri , Peter McMahon , Yoshihisa Yamamoto

We extend Quantum Dimer Model (QDM) introduced by Rokhsar and Kivelson in such a way that the model includes resonance processes on larger loops. The strategy is to first construct a pseudo spin Hamiltonian which is defined not by the S…

强关联电子 · 物理学 2016-11-25 Kouki Nakata , Keisuke Totsuka

We systematically test a quasi-classical spin model of a large spin-lattice in energy space, with a tunable, reversible Hamiltonian and effective long-range interactions. The system is simulated by a weakly interacting Fermi gas undergoing…

量子气体 · 物理学 2023-12-04 J. Huang , Camen A. Royse , I. Arakelyan , J. E. Thomas

We propose a readily achievable experimental setting where an external magnetic field is used to tune the emergent quantum electrodynamics (eQED) of dipolar-octupolar quantum spin ice (DO-QSI). In $U(1)_\pi$ DO-QSI -- the proposed ground…

强关联电子 · 物理学 2024-07-16 Alaric Sanders , Han Yan , Claudio Castelnovo , Andriy H. Nevidomskyy