Applications in Josephson junctions, SQUIDs, and MEG. Other low field applications

2021 ◽  
Author(s):  
Jatinder Vir Yakhmi
Keyword(s):  
Josephson Junctions ◽  
Low Field

scholarly journals Supercurrent in Graphene Josephson Junctions with Narrow Trenches in the Quantum Hall Regime

MRS Advances ◽  
2018 ◽  
Vol 3 (47-48) ◽  
pp. 2855-2864 ◽  
Author(s):  
Andrew Seredinski ◽  
Anne Draelos ◽  
Ming-Tso Wei ◽  
Chung-Ting Ke ◽  
Tate Fleming ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Applied Field ◽  
Quantum Hall ◽  
Edge State ◽  
Edge States ◽  
Hole Edge ◽  
Low Field ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
The Subject

ABSTRACTCoupling superconductors to quantum Hall edge states is the subject of intense investigation as part of the ongoing search for non-abelian excitations. Our group has previously observed supercurrents of hundreds of picoamperes in graphene Josephson junctions in the quantum Hall regime. One of the explanations of this phenomenon involves the coupling of an electron edge state on one side of the junction to a hole edge state on the opposite side. In our previous samples, these states are separated by several microns. Here, a narrow trench perpendicular to the contacts creates counterpropagating quantum Hall edge channels tens of nanometres from each other. Transport measurements demonstrate a change in the low-field Fraunhofer interference pattern for trench devices and show a supercurrent in both trench and reference junctions in the quantum Hall regime. The trench junctions show no enhancement of quantum Hall supercurrent and an unexpected supercurrent periodicity with applied field, suggesting the need for further optimization of device parameters.

Low-Tcramp-type Josephson junctions for SQUIDS

2002 ◽  
Vol 12 (3) ◽  
pp. 133-136 ◽  
Author(s):  
M. Podt ◽  
B. G.A. Rolink ◽  
J. Flokstra ◽  
H. Regalia
Keyword(s):  
Josephson Junctions

Application of silicon substrates for high-Tc Josephson junctions and SQUIDs

1998 ◽  
Vol 08 (PR3) ◽  
pp. Pr3-297-Pr3-300 ◽  
Author(s):  
S. Linzen ◽  
Y. J. Tian ◽  
U. Hübner ◽  
F. Schmidl ◽  
J. Scherbel ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Silicon Substrates ◽  
High Tc

LOW FIELD E.S.R, IN THE SUPERCONDUCTING RELAXED STATE OF (TMTSF)2C104AT LOW TEMPERATURE

1983 ◽  
Vol 44 (C3) ◽  
pp. C3-1033-C3-1036 ◽  
Author(s):  
J. M. Delrieu ◽  
N. S. Sullivan ◽  
Bechgaard
Keyword(s):  
Low Temperature ◽  
Low Field

Fluctuation Measurement Across the Broad Range of the Low-field Side Edge Plasmas in the TST-2 Spherical Tokamak

2012 ◽  
Vol 132 (7) ◽  
pp. 499-504
Author(s):  
Masateru Sonehara ◽  
Yoshihiko Nagashima ◽  
Yuichi Takase ◽  
Akira Ejiri ◽  
Takashi Yamaguchi ◽  
...  
Keyword(s):  
Spherical Tokamak ◽  
Side Edge ◽  
Low Field ◽  
Edge Plasmas ◽  
Fluctuation Measurement

Improved Contrast in Ultra-Low-Field MRI with Time-Dependent Bipolar Prepolarizing Fields: Theory and NMR Demonstrations

2013 ◽  
Vol 20 (3) ◽  
pp. 327-336 ◽  
Author(s):  
Jaakko O. Nieminen ◽  
Jens Voigt ◽  
Stefan Hartwig ◽  
Hans Jürgen Scheer ◽  
Martin Burghoff ◽  
...  
Keyword(s):  
Field Strength ◽  
Time Course ◽  
Signal Strength ◽  
Relaxation Rates ◽  
Resonance Imaging ◽  
New Approach ◽  
Spin Lattice ◽  
Low Field ◽  
Low Field Mri ◽  
Magnetic Resonance Imaging Mri

Abstract The spin-lattice (T1) relaxation rates of materials depend on the strength of the external magnetic field in which the relaxation occurs. This T1 dispersion has been suggested to offer a means to discriminate between healthy and cancerous tissue by performing magnetic resonance imaging (MRI) at low magnetic fields. In prepolarized ultra-low-field (ULF) MRI, spin precession is detected in fields of the order of 10-100 μT. To increase the signal strength, the sample is first magnetized with a relatively strong polarizing field. Typically, the polarizing field is kept constant during the polarization period. However, in ULF MRI, the polarizing-field strength can be easily varied to produce a desired time course. This paper describes how a novel variation of the polarizing-field strength and duration can optimize the contrast between two types of tissue having different T1 relaxation dispersions. In addition, NMR experiments showing that the principle works in practice are presented. The described procedure may become a key component for a promising new approach of MRI at ultra-low fields

ROUND PERMALLOY 80

Alloy Digest ◽  
1976 ◽  
Vol 25 (1) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Magnetic Core ◽  
Molybdenum Alloy ◽  
Nickel Iron ◽  
Low Field ◽  
Core Losses ◽  
Very High

Abstract Round Permalloy 80 is an 80% nickel-iron-molybdenum alloy that provides very high initial and maximum magnetic permeabilities and minimal core losses at low field strengths. This vacuum-melted product also offers the advantages of small size and weight in magnetic core and shielding materials for numerous applications. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-223. Producer or source: Spang Industries Inc..

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