Cyclotron Waves in Semiconducting Bismuth-Antimony Alloys with the Magnetic Field Parallel to the Trigonal Axis

1975 ◽  
Vol 70 (1) ◽  
pp. K37-K40 ◽  
Author(s):  
G. Oelgart ◽  
R. Herrmann ◽  
H. Krüger
Keyword(s):  
Magnetic Field ◽  
Trigonal Axis ◽  
Field Parallel ◽  
Bismuth Antimony ◽  
Antimony Alloys ◽  
The Magnetic Field

scholarly journals Влияние параллельного слоям магнитного поля на фототок в GaAs/AlAs p-i-n-структурах

2022 ◽  
Vol 56 (1) ◽  
pp. 107
Author(s):  
И.А. Ларкин ◽  
Ю.Н. Ханин ◽  
Е.Е. Вдовин
Keyword(s):  
Magnetic Field ◽  
Wavelength Range ◽  
Strong Dependence ◽  
Diffusion Current ◽  
Radiation Wavelength ◽  
Quantization Level ◽  
Dimensional Quantization ◽  
Field Parallel ◽  
The Magnetic Field

The behavior of the photocurrent in GaAs / AlAs p-i-n heterostructures is studied in a magnetic field parallel to the heterolayers in the wavelength range from 395 to 650 nm. A strong dependence of the non-oscillating component of the photocurrent on the radiation wavelength associated with the suppression of the diffusion current by the magnetic field was found. It is shown that the behavior of the oscillating component of the photocurrent in a magnetic field does not depend on the wavelength of light and is determined by the transfer of electrons through the dimensional quantization level in a triangular near-barrier well. It is shown that the suppression of the oscillating component by the magnetic field is due to the smearing of the level in the triangular well due to the motion of electrons parallel to the walls of the well and perpendicular to the magnetic field.

Superconductors With Structured Surfaces: Fields and Currents

1987 ◽  
Vol 101 ◽  
Author(s):  
Z.C. Wu ◽  
Daniel A. Jelski ◽  
Thomas F. George
Keyword(s):  
Magnetic Field ◽  
The Other ◽  
Ginzburg Landau ◽  
Landau Model ◽  
Structured Surfaces ◽  
Field Parallel ◽  
First Case ◽  
The Magnetic Field ◽  
Effect Of Structure ◽  
Effect Of Surface

ABSTRACTThis paper discusses the behavior of currents and fields along a structured superconductor. First the effect of surface structure on supercurrents is investigated. Then the effect of structure on the critical nucleation field is discussed in two cases, one with the magnetic field parallel to the ripples and the other with the field parallel to the grating wavenumber. In the first case, it is found that the critical field is reduced as a function of grating height, whereas in the latter case it is increased. Finally, the relevance of this work for laser-induced chemistry above a superconducting surface is discussed. The Ginzburg-Landau model is used throughout.

Considerations of the effect of space-charge in the magnetron

1940 ◽  
Vol 36 (1) ◽  
pp. 94-100 ◽  
Author(s):  
E. B. Moullin
Keyword(s):  
Magnetic Field ◽  
Space Charge ◽  
Cylindrical Symmetry ◽  
Potential Difference ◽  
Anode Current ◽  
Pronounced Decrease ◽  
Field Parallel ◽  
Image Position ◽  
The Magnetic Field

When a diode thermionic tube, having cylindrical symmetry, is placed in a magnetic field parallel to its axis it is commonly called a magnetron. If there is a given potential difference between the anode and cathode of the tube, and if the magnetic field is steadily increased, a sharp and pronounced decrease of anode current occurs when the field reaches a certain value. It is easy to show that, if electrons leave without velocity from a cathode of radius b, they will just graze a concentric anode of radius a at potential V when the magnetic field H has the value given by

Magnetic susceptibility of buckytubes

1994 ◽  
Vol 9 (6) ◽  
pp. 1578-1582 ◽  
Author(s):  
X.K. Wang ◽  
R.P.H. Chang ◽  
A. Patashinski ◽  
J.B. Ketterson
Keyword(s):  
Magnetic Field ◽  
Magnetic Susceptibility ◽  
Electronic Structure ◽  
Room Temperature ◽  
Bulk Sample ◽  
Experimental Results ◽  
Structure Model ◽  
Field Parallel ◽  
Room Temperature Magnetic Susceptibility ◽  
The Magnetic Field

The measured room temperature magnetic susceptibility of a bulk sample of buckytubes (buckybundle) is −10.75 × 10−6 emu/g for the magnetic field parallel to the buckybundle axis, which is approximately 1.1 times the perpendicular value and 30 times larger than that of C60. The experimental results are discussed in terms of a graphite-like electronic structure model.

The cut-off characteristic of the single anode magnetron

1939 ◽  
Vol 35 (4) ◽  
pp. 637-651
Author(s):  
A. F. Harvey
Keyword(s):  
Magnetic Field ◽  
Uniform Magnetic Field ◽  
Axial Magnetic Field ◽  
Present Discussion ◽  
A Value ◽  
Field Parallel ◽  
Concentric Cylinders ◽  
Image Position ◽  
The Magnetic Field

For the purpose of the present discussion the magnetron will be defined as a diode thermionic tube, having concentric cylinders as electrodes, in which there is a uniform magnetic field parallel to the axis of the electrodes. An electron emitted from the cathode travels towards the anode in a path which is bent by the action of the magnetic field. If the anode has radius a and is at potential V with respect to the cathode of radius b, then it is well known that electrons emitted without velocity from the cathode will just graze the anode when the uniform and axial magnetic field has a value H such that

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