Solid State Plasma in the Pulse Modulated Magnetic Field

• Authors: Z. Jankauskas , S. Barauskas , V. Kvedaras
• Languages of publication: EN

Abstracts

EN

Radio frequency (RF) magnetoplasmic waves known as helicons will propagate in solid-state plasma of semiconductors when a strong magnetic field is applied. Helicons have an exact analogy with an electromagnetic whistler wave which is frequently propagated in the low density plasma of the Earth ionosphere. In our experiments the modulated magnetic field is being used for excitation of helicons. It is shown that in the case of pulse modulated field along with the RF helicon waves the transient cyclotron frequency oscillations exist in the semiconductor plasma. For observation of the cyclotron radiation frequency ω_c the modulation depth about one percent is sufficient. The measurement of ω_c provides an opportunity to determine the masses of electrons and holes in solid-state plasma of semiconductors. In already existing method the absorption of electromagnetic radiation on the cyclotron frequency is being used. For this case it is necessary to have an external infrared generator. In our method the cyclotron radiation is being generated by electrons (or holes) directly and additional external excitation is not needed.

Keywords

EN

40.41.Cr; 41.20.Jb

Discipline

• 41.20.Jb: Electromagnetic wave propagation; radiowave propagation(for light propagation, see 42.25.Bs; for electromagnetic waves in plasma, see 52.35.Hr; for atmospheric, ionospheric, and magnetospheric propagation, see 92.60.Ta, 94.20.Bb, and 94.30.Tz, respectively; see also 94.05.Pt Wave/wave, wave/particle interactions, in space plasma physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 6
• Pages: 1025-1027

Dates

published

2009-06

Contributors

author

Z. Jankauskas

• Department of Electrical Engineering, Vilnius Gediminas Technical University, Saulëtekio av. 11, LT-10223 Vilnius, Lithuania

author

S. Barauskas

• Department of Electrical Engineering, Vilnius Gediminas Technical University, Saulëtekio av. 11, LT-10223 Vilnius, Lithuania

author

V. Kvedaras

• Department of Electrical Engineering, Vilnius Gediminas Technical University, Saulëtekio av. 11, LT-10223 Vilnius, Lithuania

References

• 1. See, for example, A. Libchaber, R. Veilex, Phys. Rev. 127, 774 (1962)
• 2. Z. Jankauskas, L. Laurinavičius, Electronics and Electrical Engineering 37, 32 (2002)
• 3. C.R. Paul, S.A. Nasar, L.E. Unnewehr, Introduction to Electrical Engineering, McGraw-Hill, New York 1992, p. 771
• 4. Z. Jankauskas, V. Kvedaras, L. Laurinavičius, Physica B 346-347, 539 (2004)

Identifiers

DOI

10.12693/APhysPolA.115.1025