M. Goryca
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View article: WSe <sub>2</sub> Monolayers Grown by Molecular Beam Epitaxy on hBN
WSe <sub>2</sub> Monolayers Grown by Molecular Beam Epitaxy on hBN Open
A three-step process was developed for growing high-quality, optically uniform WSe2 monolayers by molecular beam epitaxy (MBE), taking advantage of the use of hexagonal boron nitride (hBN) as a substrate. The process was optimized to maxim…
View article: $WSe_2$ Monolayers Grown by Molecular Beam Epitaxy on hBN
$WSe_2$ Monolayers Grown by Molecular Beam Epitaxy on hBN Open
A three-step process was developed for growing high-quality, optically uniform WSe2 monolayers by molecular beam epitaxy (MBE) with advantage of using hexagonal boron nitride (hBN). The process was optimized to maximize the efficiency of p…
View article: Colossal magneto-excitonic effects in 2D van der Waals magnetic semiconductor CrSBr
Colossal magneto-excitonic effects in 2D van der Waals magnetic semiconductor CrSBr Open
2D magnetic semiconductors, which intrinsically couple a rich landscape of magnetic orders with tightly bound electron-hole pairs (excitons), present an exciting platform to investigate the interplay between optical and magnetic phenomena …
View article: Direct Optical Probing of the Magnetic Properties of the Layered Antiferromagnet CrPS$_4$
Direct Optical Probing of the Magnetic Properties of the Layered Antiferromagnet CrPS$_4$ Open
Unusual magnetic properties of Van der Waals type antiferromagnetic semiconductors make them highly attractive for spintronics and optoelectronics. A link between the magnetic and optical properties of those materials, required for practic…
View article: Deconstructing magnetization noise: Degeneracies, phases, and mobile fractionalized excitations in tetris artificial spin ice
Deconstructing magnetization noise: Degeneracies, phases, and mobile fractionalized excitations in tetris artificial spin ice Open
Direct detection of spontaneous spin fluctuations, or “magnetization noise,” is emerging as a powerful means of revealing and studying magnetic excitations in both natural and artificial frustrated magnets. Depending on the lattice and nat…
View article: Experimental and simulation data on magnetization and magnetization noise in tetris ice
Experimental and simulation data on magnetization and magnetization noise in tetris ice Open
The files contain data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper.
View article: Experimental and simulation data on magnetization and magnetization noise in tetris ice
Experimental and simulation data on magnetization and magnetization noise in tetris ice Open
The files contain data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper.
View article: Data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper
Data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper Open
The files contain data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper.
View article: Data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper
Data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper Open
The files contain data presented in the "Deconstructing Magnetization Noise: Degeneracies, Phases, and Mobile Fractionalized Excitations in Tetris Artificial Spin Ice" paper.
View article: Enhancement of electron magnetic susceptibility due to many-body interactions in monolayer MoSe<sub>2</sub>
Enhancement of electron magnetic susceptibility due to many-body interactions in monolayer MoSe<sub>2</sub> Open
Employing the original, all-optical method, we quantify the magnetic susceptibility of a two-dimensional electron gas (2DEG) confined in the MoSe 2 monolayer in the range of low and moderate carrier densities. The impact of electron–electr…
View article: Magnetic field dependent thermodynamic properties of square and quadrupolar artificial spin ice
Magnetic field dependent thermodynamic properties of square and quadrupolar artificial spin ice Open
Applied magnetic fields are an important tuning parameter for artificial spin ice (ASI) systems, as they can drive phase transitions between different magnetic ground states or tune through regimes with high populations of emergent magneti…
View article: Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures
Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures Open
In this paper, we apply the angle-resolved Optically Detected Magnetic\nResonance (ODMR) technique to study series of strained (Cd, Mn)Te/(Cd, Mg)Te\nquantum wells (QWs) produced by molecular beam epitaxy. By analyzing\ncharacteristic feat…
View article: Many-Body Exciton and Intervalley Correlations in Heavily Electron-Doped WSe<sub>2</sub> Monolayers
Many-Body Exciton and Intervalley Correlations in Heavily Electron-Doped WSe<sub>2</sub> Monolayers Open
In monolayer transition-metal dichalcogenide semiconductors, many-body correlations can manifest in optical spectra when electron-hole pairs (excitons) are photoexcited into a 2D Fermi sea of mobile carriers. At low carrier densities, the …
View article: Enhanced Emission from Bright Excitons in Asymmetrically Strained Colloidal CdSe/Cd<sub><i>x</i></sub>Zn<sub>1–<i>x</i></sub>Se Quantum Dots
Enhanced Emission from Bright Excitons in Asymmetrically Strained Colloidal CdSe/Cd<sub><i>x</i></sub>Zn<sub>1–<i>x</i></sub>Se Quantum Dots Open
Colloidal CdSe quantum dots (QDs) designed with a high degree of asymmetric internal strain have recently been shown to host a number of desirable optical properties including subthermal room-temperature line widths, suppressed spectral di…
View article: Spontaneous Valley Polarization of Interacting Carriers in a Monolayer Semiconductor
Spontaneous Valley Polarization of Interacting Carriers in a Monolayer Semiconductor Open
We report magnetoabsorption spectroscopy of gated WSe_{2} monolayers in high magnetic fields up to 60 T. When doped with a 2D Fermi sea of mobile holes, well-resolved sequences of optical transitions are observed in both σ^{±} circular pol…
View article: Field-Induced Magnetic Monopole Plasma in Artificial Spin Ice
Field-Induced Magnetic Monopole Plasma in Artificial Spin Ice Open
Artificial spin ices (ASIs) are interacting arrays of lithographically-defined nanomagnets in which novel frustrated magnetic phases can be intentionally designed. A key emergent description of fundamental excitations in ASIs is that of ma…
View article: Temperature dependence of photoluminescence lifetime of atomically thin\n WSe2 layer
Temperature dependence of photoluminescence lifetime of atomically thin\n WSe2 layer Open
At cryogenic temperatures, the photoluminescence spectrum of monolayer\nWSe2features a num-ber of lines related to the recombination of so-called\nlocalized excitons. The intensity of these lines strongly decreases with\nincreasing tempera…
View article: Temperature dependence of photoluminescence lifetime of atomically thin WSe2 layer
Temperature dependence of photoluminescence lifetime of atomically thin WSe2 layer Open
At cryogenic temperatures, the photoluminescence spectrum of monolayer WSe2features a num-ber of lines related to the recombination of so-called localized excitons. The intensity of these lines strongly decreases with increasing temperatur…
View article: Time-resolved magneto-Raman study of carrier dynamics in low Landau levels of graphene
Time-resolved magneto-Raman study of carrier dynamics in low Landau levels of graphene Open
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View article: Detection of thermodynamic “valley noise” in monolayer semiconductors: Access to intrinsic valley relaxation time scales
Detection of thermodynamic “valley noise” in monolayer semiconductors: Access to intrinsic valley relaxation time scales Open
Using light to “listen” to the noise of electrons, we reveal their intrinsic dynamics in a single semiconducting atomic layer.
View article: Magnetic field induced polarization enhancement in monolayers of tungsten dichalcogenides: effects of temperature
Magnetic field induced polarization enhancement in monolayers of tungsten dichalcogenides: effects of temperature Open
Optical orientation of localized/bound excitons is shown to be effectively enhanced by the application of magnetic fields as low as 20 mT in monolayer WS$_2$. At low temperatures, the evolution of the polarization degree of different emiss…
View article: Magnetic-field-induced abrupt spin-state transition in a quantum dot containing magnetic ions
Magnetic-field-induced abrupt spin-state transition in a quantum dot containing magnetic ions Open
We present the results of a comprehensive magneto-optical characterization of\nsingle CdTe quantum dots containing a few Mn2+ ions. We find that some quantum\ndots exhibit an unexpected evolution of excitonic photoluminescence spectrum\nwi…
View article: Magnetic-field-induced abrupt spin state transition in a quantum dot containing magnetic ions
Magnetic-field-induced abrupt spin state transition in a quantum dot containing magnetic ions Open
We present the results of a comprehensive magneto-optical characterization of single CdTe quantum dots containing a few Mn2+ ions. We find that some quantum dots exhibit an unexpected evolution of excitonic photoluminescence spectrum with …
View article: Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots
Comparison of magneto-optical properties of various excitonic complexes in CdTe and CdSe self-assembled quantum dots Open
We present a comparative study of two self-assembled quantum dot (QD) systems based on II-VI compounds: CdTe/ZnTe and CdSe/ZnSe. Using magneto-optical techniques we investigated a large population of individual QDs. The systematic photolum…
View article: Optical signatures of spin-dependent coupling in semimagnetic quantum dot molecules
Optical signatures of spin-dependent coupling in semimagnetic quantum dot molecules Open
We present photoluminescence studies of CdTe and CdMnTe quantum dots grown in two adjacent layers. We show that when the dots are 8 nm apart, their magnetooptical properties - Zeeman shifts and transition linewidths - are analogous to thos…