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We propose to use a point contact between a ferromagnetic and a normal metal in the presence of a magnetic field for creating a large inverted spin-population of hot electrons in the contact core. The key point of the proposal is that when…

The infrared (900-1100 cm-1) Faraday rotation and circular dichroism are measured in the normal state of underdoped High Tc superconductors and used to study the magneto-transport. YBa2Cu3O6+x thin films are investigated in the temperature…

超导电性 · 物理学 2009-11-10 L. B. Rigal , D. C. Schmadel , H. D. Drew , B. Maiorov , E. Osquigil , J. S. Preston , R. Hughes , G. D. Gu

Conceptual designs of a superconducting dipole magnet for a Storage Ring of a Muon Collider with a 1.5 TeV center of mass (c.o.m.) energy and an average luminosity of 10 34 cm-2s-1 are presented. In contrast to proton machines, the dipoles…

加速器物理 · 物理学 2015-06-04 I. Novitski , V. V. Kashikhin , N. Mokhov , A. V. Zlobin

Transverse magneto-thermoelectric effects are studied in permalloy thin films grown on MgO substrates. We find that small parasitic magnetic fields below 1 Oe can produce artifacts of the order of 1 % of the amplitude of the anisotropic…

介观与纳米尺度物理 · 物理学 2016-08-03 A. S. Shestakov , M. Schmid , D. Meier , T. Kuschel , C. H. Back

A scheme to generate magnetized relativistic plasmas in laboratory is proposed. It is based on interaction of ultra-high-intensity sub-picosecond laser pulses with few-micron thick foils or films. By means of Particle-In-Cell simulations it…

等离子体物理 · 物理学 2023-02-03 Artem V. Korzhimanov

It is shown that the standard cosmological model predicts {\it ab initio} generation of large-scale but very small-amplitude cosmic magnetic fields at the epoch of recombination of the primeval plasma. Matter velocities dominated by…

天体物理学 · 物理学 2007-05-23 Craig J. Hogan

Due to its strong bonds graphene can stretch up to 25% of its original size without breaking. Furthermore, mechanical deformations lead to the generation of pseudo-magnetic fields (PMF) that can exceed 300 T. The generated PMF has opposite…

介观与纳米尺度物理 · 物理学 2017-11-22 Slavisa P. Milovanovic , Francois M. Peeters

Faraday rotation of radio source polarization provides a measure of the integrated magnetic field along the observational lines of sight. We compare a new, large sample of Faraday rotation measures (RMs) of polarized extragalactic sources…

天体物理学 · 物理学 2009-11-13 Yongzhong Xu , Philipp P. Kronberg , Salman Habib , Quentin W. Dufton

The strong electric field between the sample and the extractor is the core of cathode lenses and a pivotal determinant of high resolution. Nevertheless, fields in the range of 3-8 kV/mm can be a source of complications. Local field…

应用物理 · 物理学 2026-01-15 Olena Tkach , Gerd Schoenhense

In natural and laboratory magnetized plasmas, an equilibrium electric field may exist perpendicular to the background magnetic field. In such a situation all the plasma species experience a common drift and the unperturbed distribution…

等离子体物理 · 物理学 2020-10-22 Deng Zhou

Ultracold atom-based electron sources have recently been proposed as an alternative to the conventional photo-injectors or thermionic electron guns widely used in modern particle accelerators. The advantages of ultracold atom-based electron…

加速器物理 · 物理学 2015-06-19 G. Xia , M. Harvey , A. J. Murray , L. Bellan , W. Bertsche , R. B. Appleby , O. Mete , S. Chattopadhyay

We remeasured the magnetic field dependence of the low-temperature specific heat of the electron-doped superconductor Pr1.85Ce0.15CuO4 (T_C=22\pm 2K) under a different measurement procedure. Under field-cooling, the electronic specific heat…

超导电性 · 物理学 2009-11-11 W. Yu , B. Liang , R. L. Greene

Experimental asymmetries in fusion implosions can lead to magnetic field generation in the hot plasma core. For typical parameters, previous studies found that the magnetisation Hall parameter, given by the product of the electron…

等离子体物理 · 物理学 2021-03-17 James D. Sadler , Hui Li , Kirk A. Flippo

Permanent magnet electron optics offer many advantages over electromagnets, and are being increasingly used in high-energy (GeV) electron accelerator designs. Here, we identify the advantages of permanent magnet electron optics for…

加速器物理 · 物理学 2026-05-29 Ameya Patwardhan , Bas van der Geer , Jom Luiten , Julius Huijts

An analytical formulation to compute a magnetic field generated from an uniformly magnetized cylinder ferromagnet is developed. Exact solutions of the magnetic field generated from the magnetization pointing in an arbitrary direction are…

介观与纳米尺度物理 · 物理学 2018-02-02 Tomohiro Taniguchi

Due to the progressive increase in size of the latest Cherenkov-type detectors, it is becoming increasingly important to design a suitable compensation system based on coils of the Earth's magnetic field to ensure the correct operation of…

In this paper we demonstrate a technique of utilizing magnetically trapped neutral Rb-87 atoms to measure the magnitude and direction of stray electric fields emanating from surface contaminants. We apply an alternating external electric…

软凝聚态物质 · 物理学 2007-06-22 J. M. Obrecht , R. J. Wild , E. A. Cornell

A linear combination of spherically symmetric heat sources is shown to provide optimal stationary thermal distribution in magnetic hyperthermia. Furthermore, such spatial location of heat sources produces suitable temperature distribution…

应用物理 · 物理学 2021-10-14 R. A. Rytov , V. A. Bautin , N. A. Usov

We implement magnetic resonance force microscopy (MRFM) in an experimental geometry, where the long axis of the cantilever is normal to both the external magnetic field and the RF microwire source. Measurements are made of the statistical…

介观与纳米尺度物理 · 物理学 2015-03-19 Fei Xue , P. Peddibhotla , M. Montinaro , D. Weber , M. Poggio

We describe an ultra-sensitive atomic magnetometer using optically-pumped potassium atoms operating in spin-exchange relaxation free (SERF) regime. We demonstrate magnetic field sensitivity of 160 aT/Hz$^{1/2}$ in a gradiometer arrangement…

原子物理 · 物理学 2015-05-14 H. B. Dang , A. C. Maloof , M. V. Romalis