Jiří Pospíšil
YOU?
Author Swipe
View article: Systematic mapping of altermagnetic magnons by resonant inelastic X-ray circular dichroism
Systematic mapping of altermagnetic magnons by resonant inelastic X-ray circular dichroism Open
View article: Systematic Mapping of Altermagnetic Magnons by Resonant Inelastic X-Ray Circular Dichroism
Systematic Mapping of Altermagnetic Magnons by Resonant Inelastic X-Ray Circular Dichroism Open
Altermagnets, a unique class of magnetic materials that combines features of both ferromagnets and antiferromagnets, have garnered attention for their potential in spintronics and magnonics. While the electronic properties of altermagnets …
View article: Suppression of ferromagnetism in van der Waals insulator due to pressure-induced layer stacking variation
Suppression of ferromagnetism in van der Waals insulator due to pressure-induced layer stacking variation Open
External pressure suppresses the ferromagnetism of localized Cr 3d electron moments in the van der Waals insulator CrBr3, which cannot be explained without considering a dramatic pressure-induced crystal or electronic structure change. We …
View article: A fast GGAG:Ce(Mg) single crystal scintillator: LDFZM growth, characterization and electronic band structure calculation
A fast GGAG:Ce(Mg) single crystal scintillator: LDFZM growth, characterization and electronic band structure calculation Open
GGAG:Ce(Mg) crystals were prepared by the laser-diode floating zone method in oxygen over-pressure. Electronic band structure calculations for different compositions of GGAG were performed and discussed.
View article: Unique magnetic structure of the vdW antiferromagnet VBr3
Unique magnetic structure of the vdW antiferromagnet VBr3 Open
View article: Enhanced triplet superconductivity in next-generation ultraclean UTe <sub>2</sub>
Enhanced triplet superconductivity in next-generation ultraclean UTe <sub>2</sub> Open
The unconventional superconductor UTe exhibits numerous signatures of spin-triplet superconductivity—a rare state of matter which could enable quantum computation protected against decoherence. UTe possesses a complex phase landscape…
View article: Quantum Interference between Quasi-2D Fermi Surface Sheets in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>UTe</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
Quantum Interference between Quasi-2D Fermi Surface Sheets in Open
UTe2 is a spin-triplet superconductor candidate for which high quality samples with long mean free paths have recently become available, enabling quantum oscillation measurements to probe its Fermi surface and effective carrier masses. It …
View article: Multiferroic quantum criticality in (Eu,Ba,Sr)TiO$_3$ solid solution
Multiferroic quantum criticality in (Eu,Ba,Sr)TiO$_3$ solid solution Open
Based on the earlier published theory (\textit{Nature Mat}. \textbf{18}, 223--228 (2019)), a comprehensive experimental investigation of multiferroic quantum critical behavior of (Eu,Ba,Sr)TiO$_3$ polycrystalline and single crystal samples…
View article: Quasi-2D Fermi surface in the anomalous superconductor UTe2
Quasi-2D Fermi surface in the anomalous superconductor UTe2 Open
View article: Unique Magnetic Structure of the Vdw Antiferromagnet Vbr3
Unique Magnetic Structure of the Vdw Antiferromagnet Vbr3 Open
View article: Formation of Domains within a Lower-to-Higher Symmetry Structural Transition in CrI<sub>3</sub>
Formation of Domains within a Lower-to-Higher Symmetry Structural Transition in CrI<sub>3</sub> Open
CrI3 represents one of the most important van der Waals systems on the route to understanding 2D magnetic phenomena. Being arranged in a specific layered structure, it also provides a unique opportunity to investigate structural…
View article: Formation of Domains within Lower-to-higher Symmetry Structural Transition in CrI$_3$
Formation of Domains within Lower-to-higher Symmetry Structural Transition in CrI$_3$ Open
CrI$_3$ represents one of the most important van der Waals systems on the route to understanding two-dimensional magnetic phenomena. Being arranged in a specific layered structure it also provides a unique opportunity to investigate struct…
View article: Dramatic elastic response at the critical end point in UTe$_2$
Dramatic elastic response at the critical end point in UTe$_2$ Open
The first-order transition line in the \textit{H-T} phase diagram of itinerant electron metamagnets terminates at the critical end point-analogous to the critical point on the gas-liquid condensation line in the \textit{p-T} phase diagram.…
View article: Quantum interference between quasi-2D Fermi surface sheets in UTe2
Quantum interference between quasi-2D Fermi surface sheets in UTe2 Open
UTe$_2$ is a spin-triplet superconductor candidate for which high quality samples with long mean free paths have recently become available, enabling quantum oscillation measurements to probe its Fermi surface and effective carrier masses. …
View article: Robust intralayer antiferromagnetism and tricriticality in a van der Waals compound: VBr3 case
Robust intralayer antiferromagnetism and tricriticality in a van der Waals compound: VBr3 case Open
We studied magnetic states and phase transitions in the van der Waals antiferromagnet VBr3 by specific heat and magnetization measurements of single crystals in high magnetic fields and by ab initio density functional theory calculations f…
View article: Nd:YAG Single Crystals Grown by the Floating Zone Method in a Laser Furnace
Nd:YAG Single Crystals Grown by the Floating Zone Method in a Laser Furnace Open
We report on single crystal growth of laser material Nd:YAG widely used in the applications by the innovative crucible-free floating zone method implemented in an advanced laser optical furnace. We have optimized the parameters for the pro…
View article: Sequence of phase transformations in metastable β Zr–12Nb alloy studied in situ by HEXRD and complementary techniques
Sequence of phase transformations in metastable β Zr–12Nb alloy studied in situ by HEXRD and complementary techniques Open
Phase transformations in a metastable beta Zr–12Nb alloy were investigated by high-energy X-ray diffraction (HEXRD) measured simultaneously with thermal expansion in situ during linear heating from room temperature to 800 °C. Complementary…
View article: Large Orbital Magnetic Moment in VI<sub>3</sub>
Large Orbital Magnetic Moment in VI<sub>3</sub> Open
The existence of the V3+-ion orbital moment is an open issue of the nature of magnetism in the van der Waals ferromagnet VI3. The huge magnetocrystalline anisotropy in conjunction with the significantly reduced ordere…
View article: Sequence of Phase Transformations in Metastable Β Zr-12nb Alloy Studied in Situ by Hexrd and Complementary Techniques
Sequence of Phase Transformations in Metastable Β Zr-12nb Alloy Studied in Situ by Hexrd and Complementary Techniques Open
View article: Growth of Gsag:Ce Scintillator by Floating Zone Method Under Pressurized Oxygen Atmosphere
Growth of Gsag:Ce Scintillator by Floating Zone Method Under Pressurized Oxygen Atmosphere Open
View article: Lamellae of α phase in a metastable β-Ti alloy studied by small-angle x-ray scattering
Lamellae of α phase in a metastable β-Ti alloy studied by small-angle x-ray scattering Open
View article: Nd:YAG single crystals grown by floating zone method in laser furnace
Nd:YAG single crystals grown by floating zone method in laser furnace Open
We report on single crystal growth of laser material Nd:YAG widely used in the applications by innovative crucible-free floating zone method implemented in an advanced laser optical furnace. We have optimized the parameters for the product…
View article: Large orbital magnetic moment in VI3
Large orbital magnetic moment in VI3 Open
The existence of the V3+ ion orbital moment is the open issue of the nature of magnetism in the van der Waals ferromagnet VI3. The huge magnetocrystalline anisotropy in conjunction with the significantly reduced ordered magnetic moment com…
View article: Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3
Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3 Open
We use the synergy of infrared, terahertz, and Raman spectroscopies with DFT calculations to shed light on the magnetic and lattice properties of VI3. The structural transition at TS1 = 79 K is accompanied by a large splitting of polar pho…
View article: UI$_3$ -- 5f-electron magnetic van der Waals material
UI$_3$ -- 5f-electron magnetic van der Waals material Open
We grew high-quality single crystals of the 5f electron van der Waals compound UI$_3$ and investigated them by measurements of specific heat and magnetization as functions of temperature and magnetic field. UI$_3$ behaves as an antiferroma…
View article: Tricritical fluctuations and elastic properties of the Ising antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>UIrSi</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Tricritical fluctuations and elastic properties of the Ising antiferromagnet Open
Elastic constants, thermal expansion, magnetostriction and heat capacity measurements were performed with and without applied magnetic field on a single crystal of UIrSi$_3$. The elastic properties were interpreted within the theory of the…
View article: Electronic structure of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>ThPd</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Al</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>: Impact of the U <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>5</mml:mn><mml:mi>f</mml:mi></mml:mrow></mml:math> states on the electronic structure of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>UPd</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Al</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Electronic structure of : Impact of the U states on the electronic structure of Open
The electronic structure of ThPd$_2$Al$_3$, which is isostructural to the\nheavy fermion superconductor UPd$_2$Al$_3$, was investigated by photoelectron\nspectroscopy. The band structure and Fermi surfaces of ThPd$_2$Al$_3$ were\nobtained …
View article: Crystal structure evolution in the van der Waals transition metal trihalides
Crystal structure evolution in the van der Waals transition metal trihalides Open
Most transition-metal trihalides are dimorphic. The representative chromium-based triad, CrCl3, CrBr3, CrI3, is characterized by the low-temperature phase adopting the trigonal BiI3 type while the structure of the high-temperature phase is…
View article: Ui3 – 5f-Electron Magnetic Van Der Waals Material
Ui3 – 5f-Electron Magnetic Van Der Waals Material Open
View article: Lamellae of Α Phase in a Metastable Β-Ti Alloy Studied by Small-Angle X-Ray Scattering
Lamellae of Α Phase in a Metastable Β-Ti Alloy Studied by Small-Angle X-Ray Scattering Open