Magnetotransport through Nanoconstriction in Ferromagnetic Semiconductor (Ga,Mn)As

• Authors: T. Figielski , T. Wosiński , O. Pelya , J. Sadowski , A. Morawski , A. Mąkosa , W. Dobrowolski , J. Jagielski , J. Wróbel
• Languages of publication: EN

Abstracts

EN

We studied narrow (submicron) constrictions in the layers of ferromagnetic semiconductor (Ga,Mn)As. We have demonstrated a contribution of the quantum localization effects to the magnetoresistance of the constricted samples. We have also found a negative contribution of a domain wall trapped in the constriction to the resistance, due presumably to the erasing of the localization effects by the domain wall.

Keywords

EN

73.63.-b; 75.60.-d; 73.20.Fz

Discipline

• 75.60.-d: Domain effects, magnetization curves, and hysteresis(for dynamics of domain structures, see 75.78.Fg)
• 73.63.-b: Electronic transport in nanoscale materials and structures(see also 73.23.-b Electronic transport in mesoscopic systems)
• 73.20.Fz: Weak or Anderson localization

• Journal: Acta Physica Polonica A
• Year: 2003
• Volume: 103
• Issue: 6
• Pages: 525-531

Dates

published

2003-06

received

2003-05-30

Contributors

author

T. Figielski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

T. Wosiński

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

O. Pelya

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

J. Sadowski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland
• Max-lab, Lund University, 22100 Lund, Sweden

author

A. Morawski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

A. Mąkosa

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

W. Dobrowolski

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

J. Jagielski

• Institute of Electronic Materials Technology, 01-919 Warszawa, Poland

author

J. Wróbel

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.103.525