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Magnets are interesting materials for classical and quantum information technologies. However, the short decoherence and dephasing times that determine the scale and speed of information networks, severely limit the appeal of employing the…

Mesoscale and Nanoscale Physics · Physics 2023-12-18 Mehrdad Elyasi , Kei Yamamoto , Tomosato Hioki , Takahiko Makiuchi , Hiroki Shimizu , Eiji Saitoh , Gerrit E. W. Bauer

We propose a concept of half-semiconductor antiferromagnets in which both spin-polarized valence and conduction bands belong to the same spin channel with completely compensated spontaneous magnetization. Using density functional theory…

Materials Science · Physics 2013-08-26 Junjie He , P. Zhou , N. Jiao , L. Z. Sun , Xiaoshuang Chen , Wei Lu

Noncollinear magnetic moments in antiferromagnets (AFM) lead to a complex behavior of electrical transport, even to a decreasing resistivity due to an increasing temperature. Proper treatment of such phenomena is required for understanding…

Materials Science · Physics 2020-06-19 David Wagenknecht , Karel Výborný , Karel Carva , Ilja Turek

Although the development of spintronic devices has advanced significantly over the past decade with the use of ferromagnetic materials, the extensive implementation of such devices has been limited by the notable drawbacks of these…

Materials Science · Physics 2022-11-04 Kang Wang , Vineetha Bheemarasetty , Junhang Duan , Shiyu Zhou , Gang Xiao

We present a new family of exchange biased Single Molecule Magnets in which antiferromagnetic coupling between the two components results in quantum behaviour different from that of the individual SMMs. Our experimental observations and…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 W. Wernsdorfer , N. Aliaga-Alcalde , R. Tiron , D. N. Hendrickson , G. Christou

A common optimization problem in the areas of magnetized plasmas and fusion energy is the design of magnets to produce a given three-dimensional magnetic field distribution to high precision. When designing arrays of permanent magnets for…

Plasma Physics · Physics 2024-02-20 K. C. Hammond , A. A. Kaptanoglu

Coherent manipulation of a quantum system is one of the main themes in current physics researches. In this work, we design a circuit QED system with a tunable coupling between an artificial atom and a superconducting resonator while keeping…

Quantum Physics · Physics 2019-05-13 Qi-Kai He , D. L. Zhou

The effect of magnetic field on the static and dynamic spin correlations in the non-centrosymmetric heavy-fermion superconductor CePt$_3$Si was investigated by neutron scattering. The application of a magnetic field B increases the…

Strongly Correlated Electrons · Physics 2016-08-11 K. Kaneko , O. Stockert , B. Fåk , S. Raymond , M. Skoulatos , T. Takeuchi , Y. Ōnuki

We propose FMMformers, a class of efficient and flexible transformers inspired by the celebrated fast multipole method (FMM) for accelerating interacting particle simulation. FMM decomposes particle-particle interaction into near-field and…

Machine Learning · Computer Science 2021-08-06 Tan M. Nguyen , Vai Suliafu , Stanley J. Osher , Long Chen , Bao Wang

A method to create a highly homogeneous magnetic field by applying topology optimized, additively manufactured shimming elements is investigated. The topology optimization algorithm can calculate a suitable permanent and nonlinear soft…

Applied Physics · Physics 2018-04-17 C. Huber , M. Goertler , F. Bruckner , C. Abert , I. Teliban , M. Groenefeld , D. Suess

We study the ternary clathrate Pr3Pd20Si6 in specific heat and AC-susceptibility measurements on a high-quality single crystal, distinguishing antiferromagnetic (AFM) and antiferroquadrupolar (AFQ) ordering on two sublattices of…

The cooperation of electronic correlation and spin-orbit coupling can stabilize magnetic topological insulators which host novel quantum phenomena such as the quantum anomalous Hall state also known as Chern insulator (CI). Here, we…

Strongly Correlated Electrons · Physics 2024-10-01 Mohsen Hafez-Torbati

We present an alternative switching-magnetization magnetic force microscopy (SM- MFM) method using planar tip-on-chip probes. Unlike traditional needle-like tips, the planar probe approach integrates a microdevice near the tip apex with…

Using an electric field instead of an electric current (or a magnetic field) to tailor the electronic properties of magnetic materials is promising for realizing ultralow energy-consuming memory devices because of the suppression of Joule…

Materials Science · Physics 2018-09-18 Z. X. Feng , H. Yan , Z. Q. Liu

A storage ring provides an attractive option for directly measuring the electric dipole moment~(EDM) of charged particles. To reach a sensitivity of 10^-29 e x cm, it is critical to mitigate the systematic errors from all sources. This…

Accelerator Physics · Physics 2016-11-16 Mei Bai , Yann Dutheil , David Sagan

The purpose of this work is the design of FIR QMF (Quadrature Mirror Filters) filters of perfect reconstruction and odd number of coefficients (even order). By design, these filters will have linear phase and integer delay. These filter…

Signal Processing · Electrical Eng. & Systems 2022-10-28 Fernando Martin-Rodriguez , Fernando Isasi-de-Vicente , Monica Fernandez-Barciela

The performance of the magnets plays an important role in the functioning of an accelerator. Most of the magnets are designed at the accelerator laboratory and built by industry. The link between the laboratory and the manufacturer is the…

Accelerator Physics · Physics 2011-03-10 D. Einfeld

The cryomodule I for ADS Injection-I had been designed, fabricated and online tested. The CM1 contains seven superconducting magnets, seven superconducting spoke cavities and seven beam position monitors. The superconducting magnet, which…

Accelerator Physics · Physics 2016-01-28 Xiangchen Yang , Da Cheng , Quanling Peng , Yuan Chen , Fengyu Xu , Anbin Chen

We propose a new concept of magnetic focusing for targeting and accumulation of functionalized superparamagnetic nanoparticles in living organs through composite configurations of different permanent magnets. The proposed setups fulfill two…

Materials Science · Physics 2020-12-10 A. Omelyanchik , G. Lamura , D. Peddis , F. Canepa

The high-luminosity LHC upgrade requires stronger than LHC low-beta quadrupole magnets to reach the luminosity goals of the project. The project is well advanced and HL-LHC quadrupole magnets are currently being commissioned in US Labs…

Accelerator Physics · Physics 2024-02-08 S. Stoynev , G. Ambrosio , K. Amm , J. DiMarco , S. Feher , P. Ferracin , V. Marinozzi , S. Prestemon , A. B. Yahia