63 citations · 759 across the 53 of their papers we have counts for
44 papers · 1 filter
Nearly Lattice Matched GaAs/Pb(1-x)Sn(x)Te Core-Shell Nanowires
Sania Dad, Piotr Dziawa, Wiktoria Zajkowska +4
We investigate the full and half-shells of Pb(1-x)Sn(x)Te topological crystalline insulator deposited by molecular beam epitaxy on the sidewalls of wurtzite GaAs nanowires (NWs). D…
Structural properties of TaAs Weyl semimetal thin films grown by molecular beam epitaxy on GaAs(001) substrates
Janusz Sadowski, Jarosław Z. Domagała, Wiktoria Zajkowska +6
Thin crystalline layers of TaAs Weyl semimetal (9 and 18 nm thick) are grown by molecular beam epitaxy on GaAs(001) substrates. The (001) planes of the tetragonal TaAs lattice are…
Current-induced magnetization reversal in (Ga,Mn)(Bi,As) epitaxial layer with perpendicular magnetic anisotropy
Tomasz Andrearczyk, Janusz Sadowski, Krzysztof Dybko +2
Pulsed current-induced magnetization reversal is investigated in the layer of (Ga,Mn)(Bi,As) dilute ferromagnetic semiconductor (DFS) epitaxially grown under tensile misfit strain…
Bi Incorporation and segregation in the MBE-grown GaAs-(Ga,Al)As-Ga(As,Bi) core-shell nanowires
Janusz Sadowski, Anna Kaleta, Serhii Kryvyi +7
Incorporation of Bi into GaAs-(Ga,Al)As-Ga(As,Bi) core-shell nanowires grown by molecular beam epitaxy is studied with transmission electron microscopy. Nanowires are grown on GaAs…
Molecular Beam Epitaxy of a 2D material nearly lattice matched to a 3D substrate: on
Bartłomiej Seredyński, Zuzanna Ogorzałek, Wiktoria Zajkowska +7
The lattice mismatch between interesting 2D materials and commonly available 3D substrates is one of the obstacles in the epitaxial growth of monolithic 2D/3D heterostructures, but…
Magnetic properties of wurtzite (Ga,Mn)As
Katarzyna Gas, Janusz Sadowski, Maciej Sawicki
Here we report on detailed studies of the magnetic properties of the wurtzite (Ga,Mn)As cylindrical shells. GaMnAs shells have been grown by molecular beam epitax…
Enhanced ferromagnetism in cylindrically confined MnAs nanocrystals embedded in wurtzite GaAs nanowire shells
Anna Kaleta, Slawomir Kret, Katarzyna Gas +6
Nearly 30% increase of the ferromagnetic phase transition temperature has been achieved in strained MnAs nanocrystals embedded in a wurtzite GaAs matrix. Wurtzite GaAs exerts tensi…
Defect-free SnTe topological crystalline insulator nanowires grown by molecular beam epitaxy on graphene
J. Sadowski, P. Dziawa, A. Kaleta +4
SnTe topological crystalline insulator nanowires have been grown by molecular beam epitaxy on graphene/SiC substrates. The nanowires have cubic rock-salt structure, they grow along…
Bi monocrystal formation on InAs(111)A and B substrates
L. Nicolaï, J. -M. Mariot, U. Djukic +13
The growth of Bi films deposited on both A and B faces of InAs(111) has been investigated by low-energy electron diffraction, scanning tunneling microscopy, and photoelectron spect…
Cubic anisotropy in high homogeneity thin (Ga,Mn)As layers
M. Sawicki, O. Proselkov, C. Sliwa +4
Historically, comprehensive studies of dilute ferromagnetic semiconductors, e.g., -type (Cd,Mn)Te and (Ga,Mn)As, paved the way for a quantitative theoretical description of effe…
Electronic structure of (Ga,Mn)As revisited
J. Kanski, L. Ilver, K. Karlsson +4
The detailed nature of electronic states mediating ferromagnetic coupling in dilute magnetic semiconductors, specifically (Ga,Mn)As, has been an issue of long debate. Two confronti…
Novel Quaternary Dilute Magnetic Semiconductor (Ga,Mn)(Bi,As): Magnetic and Magneto-Transport Investigations
K. Levchenko, T. Andrearczyk, J. Z. Domagala +6
Magnetic and magneto-transport properties of thin layers of the (Ga,Mn)(Bi,As) quaternary dilute magnetic semiconductor grown by the low-temperature molecular-beam epitaxy techniqu…
Determining Curie temperature of (Ga,Mn)As samples based on electrical transport measurements: low Curie temperature case
Adam Kwiatkowski, Marta Gryglas-Borysiewicz, Piotr Juszynski +5
In this paper we show that the widely accepted method of the determination of Curie temperature (TC) in (Ga,Mn)As samples, based on the position of the peak in the temperature deri…
Effect of Misfit Strain in (Ga,Mn)(Bi,As) Epitaxial Layers on their Magnetic and Magneto-Transport Properties
K. Levchenko, T. Andrearczyk, J. Z. Domagala +5
Effect of misfit strain in the layers of (Ga,Mn)(Bi,As) quaternary diluted magnetic semiconductor, epitaxially grown on either GaAs substrate or (In,Ga)As buffer, on their magnetic…
All-wurtzite (In,Ga)As-(Ga,Mn)As core-shell nanowires grown by molecular beam epitaxy
Aloyzas Siusys, Janusz Sadowski, Maciej Sawicki +6
Structural and magnetic properties of (In,Ga)As-(Ga,Mn)As core-shell nanowires grown by molecular beam epitaxy on GaAs(111)B substrate with gold catalyst have been investigated.(In…
Magnetic and magneto-transport characterization of (Ga,Mn)(Bi,As) epitaxial layers
K. Levchenko, T. Andrearczyk, J. Z. Domagala +3
High-quality layers of the (Ga,Mn)(Bi,As) quaternary compound semiconductor have been grown by the low-temperature molecular-beam epitaxy technique. An effect of Bi incorporation i…
Analysis of the and + optical transitions in (Ga,Mn)As epitaxial layers
L. Gluba, O. Yastrubchak, G. Sek +8
The diluted (Ga,Mn)As became a model ferromagnetic semiconductor, however there is still a disagreement on the source of its magnetism. The divergences arise from the results indic…
Thickness dependence of magnetic properties of (Ga,Mn)As
O. Proselkov, D. Sztenkiel, W. Stefanowicz +4
We report on a monotonic reduction of Curie temperature in dilute ferromagnetic semiconductor (Ga,Mn)As upon a well controlled chemical-etching/oxidizing thinning from 15 nm down t…
Spatially controlled formation of superparamagnetic (Mn,Ga)As nanocrystals in high temperature annealed (Ga,Mn)As/GaAs superlattices
J. Sadowski, J. Z. Domagala, R. Mathieu +2
The annealing-induced formation of (Mn,Ga)As nanocrystals in (Ga,Mn)As/GaAs superlattices was studied by X-ray diffraction, transmission electron microscopy and magnetometry. The s…
Formation process and superparamagnetic properties of (Mn,Ga)As nanocrystals in GaAs fabricated by annealing of (Ga,Mn)As layers with low Mn content
Janusz Sadowski, Jaroslaw Z. Domagala, Roland Mathieu +4
X-ray diffraction, transmission electron microscopy, and magnetization measurements are employed to study the structural and magnetic properties of Mn-rich (Mn,Ga)As nanocrystals e…
Photoreflectance Study of the Fundamental Optical Properties of (Ga,Mn)As Epitaxial Films
O. Yastrubchak, J. Zuk, H. Krzyzanowska +4
Fundamental optical properties of thin films of (Ga,Mn)As diluted ferromagnetic semiconductor with a low (1%) and high (6%) Mn content and of a reference GaAs film, grown by low-te…
Magnetocrystalline anisotropy and uniaxiality of MnAs/GaAs(100) films
J. Magnus Wikberg, Ronny Knut, Sumanta Bhandary +9
We present an investigation of the magnetic behavior of epitaxial MnAs films grown on GaAs(100). We address the dependence of the magnetic moment, ferromagnetic transition temperat…
New evidence for structural and magnetic properties of GaAs:(Mn,Ga)As granular layers
J. Bak-Misiuk, K. Lawniczak-Jablonska, E. Dynowska +12
Structural and magnetic properties of GaAs thin films with embedded MnAs nanoclusters were investigated as function of the annealing temperature and layers composition. The presenc…
Electron spectroscopic studies of nanowires formed by (GaMn)As growth on GaAs(111)B
J. Adell, I. Ulfat, J. Sadowski +2
Valence band photoemission with photon energies around the Mn2p excitation threshold has been used to study the development of nanowires catalyzed by MnAs particles. A gradual chan…