scholarly journals Fulde–Ferrell–Larkin–Ovchinnikov State in Quasi-One-Dimensional Systems: Correlation between Fermi-Surface Distortion and Optimal In-Plane Magnetic-Field Direction

2020 ◽  
Vol 89 (2) ◽  
pp. 024708
Author(s):  
Katsumi Itahashi ◽  
Hiroshi Shimahara
Keyword(s):  
Magnetic Field ◽  
Fermi Surface ◽  
Field Direction ◽  
Magnetic Field Direction ◽  
One Dimensional ◽  
Surface Distortion

scholarly journals Magnetic Assembly and Functionalization of One-Dimensional Nanominerals in Optical Field

2021 ◽  
Author(s):  
Meng Fu ◽  
Zepeng Zhang ◽  
Rui Jiang ◽  
Hongbao Liu
Keyword(s):  
Magnetic Field ◽  
Liquid Crystal ◽  
Clay Minerals ◽  
Magnetic Particles ◽  
Solid Content ◽  
Field Direction ◽  
Magnetic Field Direction ◽  
One Dimensional ◽  
Display Devices ◽  
The Magnetic Field

Magnetic particles can be oriented along the magnetic field direction to achieve orderly arrangement under the magnetic field. Optical functional materials such as photonic crystal and liquid crystal can be obtained according to magnetic induced ordered nanostructure assembly. One-dimensional natural clay minerals with unique structure, composition and properties can be used as structural base to prepare anisotropic magnetic nanoparticles by decorated with magnetic particles, achieving unique optical functional properties. In this chapter, one-dimensional clay minerals@Fe3O4 nanocomposites were prepared by co-precipitation. The resulting one-dimensional clay minerals@Fe3O4 nanocomposites are superparamagnetic. They can be oriented along the direction of the magnetic field and produce an instantaneously reversible response. These magnetic mineral materials can be dispersed in a dilute acid solution to form stable colloid solutions. These stable colloid solutions produce a similar magnetically controlled liquid crystal with Bragg diffraction under an external magnetic field. Their optical properties are affected by magnetic field intensity, magnetic field direction and solid content. The results show that the functionalization of one-dimensional clay minerals has potential applications in display devices, photonic switches and other fields.

Magnetoresistance of gallium

1970 ◽  
Vol 48 (24) ◽  
pp. 3021-3028 ◽  
Author(s):  
J. R. Cook ◽  
W. R. Datars
Keyword(s):  
Magnetic Field ◽  
Relaxation Time ◽  
Fermi Surface ◽  
Temperature Dependence ◽  
Effective Mass ◽  
Field Direction ◽  
Magnetic Field Direction ◽  
Current Direction ◽  
Rotation Curves ◽  
Time Parameters

The magnetoresistance of gallium has been studied for b-axis current direction in fields up to 20 k0e. "Rotation curves" of magnetoresistance versus magnetic field direction exhibited both principal and subsidiary minima. These minima are discussed using the pseudopotential model of the Fermi surface and major topological dimensions of the sixth-band hole surface are measured using observed angular ranges of subsidiary minima. The principal minima result from the ka and kc open trajectories. The subsidiary minima are shown to occur by means of nonsaturating ka open trajectories, extended orbits, and [Formula: see text] effects involving local variations in both effective mass and relaxation time parameters. The temperature dependence of the magnetoresistance was measured for field directions in the ac plane. Relaxation time ratios derived through Kohler's rule are anisotropically scaled with temperature, indicating deviations from Kohler's rule.

A 3 T superconducting magnet for long-run magnetic Compton-scattering experiments

1998 ◽  
Vol 5 (3) ◽  
pp. 937-939 ◽  
Author(s):  
Nobuhiko Sakai ◽  
Hiroshi Ohkubo ◽  
Yasushi Nakamura
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Compton Scattering ◽  
Superconducting Magnet ◽  
Field Direction ◽  
Compton Profile ◽  
Magnetic Field Direction ◽  
Long Run ◽  
Radiation Shields ◽  
The Magnetic Field

A 3 T superconducting magnet has been designed and constructed for magnetic Compton-profile (MCP) measurements with the new capabilities that the magnetic field direction can be altered quickly (within 5 s) and liquid-He refill is not required for more than one week. For the latter capability, two refrigerators have been directly attached to the cryostat to maintain the low temperature of the radiation shields and for the recondensation of liquid He. The system has been satisfactorily operated for over one week.

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