268 citations · 537 across the 16 of their papers we have counts for
17 papers
Multivalley 3D Electronic Structure of PbSe from Soft-X-Ray ARPES and First-Principles Calculations
Zefeng Cai, Valentine V. Volobuev, Jędrzej Korczak +7
PbSe is a narrow-gap IV-VI semiconductor, whose multivalley valence bands, with maxima at the L, , and points, underpin its intermediate-temperature thermoelectric propertie…
Tuning Dirac-Rashba and Double Dirac Cone Surface States of Topological Crystalline Insulator PbSnSe by Transition Metal Adsorbate
Bartłomiej Turowski, Wojciech Brzezicki, Ondřej Caha +9
The electronic structure of topological insulator/magnetic metal (TI/MM) interfaces is of great importance for understanding of exotic spin-dependent phenomena and realization of a…
Neural RHEED alignment with limited training data during CdTe MBE growth
Bartłomiej Turowski, Jakub J. Meixner, Róża Dziewiątkowska +5
We introduce a data-efficient neural-vision assisted method to automate crystallographic alignment during molecular beam epitaxy (MBE) growth. Trained on reflection high-energy ele…
Optical control of conductivity type and valley polarization via persistent photoconductivity in (Pb,Sn)Se quantum wells
Alexander Kazakov, Gauthier Krizman, Valentine V. Volobuev +8
The ability to tune the Fermi level of semiconductors is at the heart of modern electronics. Here, we demonstrate that persistent photoconductivity (PPC) enables tuning of carrier…
Topological phase diagram and quantum magnetotransport effects in (Pb,Sn)Se quantum wells with magnetic barriers (Pb,Eu)Se
Alexander Kazakov, Valentine V. Volobuev, Chang-Woo Cho +6
In this study, we report here on a successful growth by molecular beam epitaxy of high crystalline quality PbSnSe:Bi/PbEuSe QWs with and $y =…
3D Topological Semimetal Phases of Strained -Sn on Insulating Substrate
Jakub Polaczyński, Gauthier Krizman, Alexandr Kazakov +15
-Sn is an elemental topological material, whose topological phases can be tuned by strain and magnetic field. Such tunability offers a substantial potential for topological elec…
Spin-polarization of topological crystalline and normal insulator PbSnSe (111) epilayers probed by photoelectron spectroscopy
Bartłomiej Turowski, Aleksandr Kazakov, Rafał Rudniewski +8
The helical spin texture on the surface of topological crystalline insulators (TCI) makes these materials attractive for application in spintronics. In this work, spin-polarization…
Search for enhanced magnetism at the interface between BiSe and EuSe
K. Prokeš, Chen Luo, H. Ryll +8
Enhanced magnetism has recently been reported for the topological-insulator/ferromagnet interface BiSe/EuS with Curie temperatures claimed to be raised above room temperatu…
Triple point fermions in ferroelectric GeTe
Juraj Krempaský, Laurent Nicolaï, Martin Gmitra +10
Ferroelectric GeTe is unveiled to exhibit an intriguing multiple non-trivial topology of the electronic band structure due to the existence of triple-point and type-II Weyl fermion…
Signatures of dephasing by mirror-symmetry breaking in weak-antilocalization magnetoresistance across the topological transition in PbSnSe
Alexander Kazakov, Wojciech Brzezicki, Timo Hyart +12
Many conductors, including recently studied Dirac materials, show saturation of coherence length on decreasing temperature. This surprising phenomenon is assigned to external noise…
Ferromagnetic phase transition in topological crystalline insulator thin films: interplay of anomalous Hall angle and magnetic anisotropy
R. Adhikari, V. V. Volobuev, B. Faina +2
In magnetic topological phases of matter, the quantum anomalous Hall (QAH) effect is an emergent phenomenon driven by ferromagnetic doping, magnetic proximity effects and strain en…
Magnetic anisotropy in antiferromagnetic hexagonal MnTe
D. Kriegner, H. Reichlova, J. Grenzer +12
Antiferromagnetic hexagonal MnTe is a promising material for spintronic devices relying on the control of antiferromagnetic domain orientations. Here we report on neutron diffracti…
Magnetooptical determination of a topological index
Badih A. Assaf, Thanyanan Phuphachong, Valentine V. Volobuev +4
When a Dirac fermion system acquires an energy-gap, it is said to have either trivial (positive energy-gap) or non-trivial (negative energy-gap) topology, depending on the parity o…
Massive and massless Dirac fermions in Pb1-xSnxTe topological crystalline insulator probed by magneto-optical absorption
B. A. Assaf, T. Phuphachong, V. V. Volobuev +5
Dirac fermions in condensed matter physics hold great promise for novel fundamental physics, quantum devices and data storage applications. IV-VI semiconductors, in the inverted re…
Multiple-stable anisotropic magnetoresistance memory in antiferromagnetic MnTe
D. Kriegner, K. Vyborny, K. Olejnik +10
A common perception assumes that magnetic memories require ferromagnetic materials with a non-zero net magnetic moment. However, it has been recently proposed that compensated anti…
Electric Field Effect Analysis of Thin PbTe films on high-epsilon SrTiO3 Substrate
A. V. Butenko, R. Kahatabi, V. Sandomirsky +3
Thin PbTe films (thickness 500 - 600 angstrom), deposited on SrTiO3, have been investigated by electric field effect (EFE). The high resistivity of such thin films warrants a high…
Antiferromagnetic Interlayer Coupling in Ferromagnetic Semiconductor EuS/PbS(001) Superlattices
H. Kepa, J. Kutner-Pielaszek, J. Blinowski +11
Antiferromagnetic coupling between ferromagnetic layers has been observed for the first time in all-semiconductor superlattice structure EuS/PbS(001), by neutron scattering and mag…