Valentin Taufour
YOU?
Author Swipe
View article: Anisotropic collapse of electronic correlations in the ferromagnet UGe$_2$ under high magnetic field
Anisotropic collapse of electronic correlations in the ferromagnet UGe$_2$ under high magnetic field Open
We present electrical-resistivity measurements on the prototypical heavy-fermion ferromagnet UGe$_2$ under pulsed magnetic field up to 60~T. An anisotropic field-induced suppression of the electronic correlations is revealed. The electrica…
View article: Nanoscale quantum imaging of field-free deterministic switching of a chiral antiferromagnet
Nanoscale quantum imaging of field-free deterministic switching of a chiral antiferromagnet Open
Recently, unconventional spin-orbit torques (SOTs) with tunable spin generation open new pathways for designing novel magnetization control for cutting-edge spintronics innovations. A leading research thrust is to develop field-free determ…
View article: Incommensurate and commensurate antiferromagnetic orders in the kagome compound <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>UV</mml:mi><mml:mn>6</mml:mn></mml:msub><mml:msub><mml:mi>Sn</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>
Incommensurate and commensurate antiferromagnetic orders in the kagome compound Open
International audience
View article: Advancing the Ca<sub>14</sub>AlSb<sub>11</sub> Structure Type: Synthesis and Characterization of Yb<sub>14</sub>CdSb<sub>11</sub> for Thermoelectric Applications
Advancing the Ca<sub>14</sub>AlSb<sub>11</sub> Structure Type: Synthesis and Characterization of Yb<sub>14</sub>CdSb<sub>11</sub> for Thermoelectric Applications Open
The ternary phase, Yb 14 CdSb 11 , has been synthesized by flux and polycrystalline methods. The crystal structure is determined via single‐crystal X‐ray diffraction, revealing that it crystallizes in the Ca 14 AlSb 11 structure type ( I 4…
View article: Visualizing Field-free Deterministic Magnetic Switching of all-van der Waals Spin-Orbit Torque System Using Spin Ensembles in Hexagonal Boron Nitride
Visualizing Field-free Deterministic Magnetic Switching of all-van der Waals Spin-Orbit Torque System Using Spin Ensembles in Hexagonal Boron Nitride Open
Recently, optically active spin defects embedded in van der Waals (vdW) crystals have emerged as a transformative quantum sensing platform to explore cutting-edge materials science and quantum physics. Taking advantage of excellent solid-s…
View article: Anomalous temperature-dependent magnetization in the nearly collinear antiferromagnet <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Y</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Co</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Anomalous temperature-dependent magnetization in the nearly collinear antiferromagnet Open
Y$_2$Co$_3$ is a newly discovered antiferromagnetic (AFM) compound with distorted kagome layers. Previous investigations via bulk magnetization measurements suggested a complex noncollinear magnetic behavior, with magnetic moments primaril…
View article: Pressure induced superconducting dome in LaNiGa2
Pressure induced superconducting dome in LaNiGa2 Open
View article: Multiple metamagnetic transitions in helical antiferromagnet CeVGe$_3$
Multiple metamagnetic transitions in helical antiferromagnet CeVGe$_3$ Open
We report on neutron diffraction, magnetoresistance, magnetization, and magnetic torque measurements under high magnetic field in the helical antiferromagnet CeVGe$_3$. This compound exhibits Kondo lattice coherence and helical antiferroma…
View article: Magnetism and Thermoelectric Properties of the Zintl Semiconductor: Eu<sub>21</sub>Zn<sub>4</sub>As<sub>18</sub>
Magnetism and Thermoelectric Properties of the Zintl Semiconductor: Eu<sub>21</sub>Zn<sub>4</sub>As<sub>18</sub> Open
Compositional diversity and intriguing structural features have made Zintl phases excellent candidates as thermoelectric materials. Zintl phase with 21-4-18 composition has shown high thermoelectric performance in the mid- to high-temperat…
View article: Easy-plane ferromagnetic ordering and crystal-field ground state in the Kondo lattice CeCuSi
Easy-plane ferromagnetic ordering and crystal-field ground state in the Kondo lattice CeCuSi Open
We report the successful growth of CeCuSi single crystals using a metallic flux method and the physical properties using structural, magnetic, electrical transport, optical, and heat capacity measurements. CeCuSi crystallizes in a hexagona…
View article: Symmetry-enforced Fermi surface degeneracies observed in the purported time-reversal symmetry-broken superconductor <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>LaNiGa</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Symmetry-enforced Fermi surface degeneracies observed in the purported time-reversal symmetry-broken superconductor Open
LaNiGa2 is superconductor that has been shown to break time-reversal symmetry in the superconducting state without any known nearby magnetism. Recently, single crystals of LaNiGa2 have been synthesized, revealing a nonsymmorphic Cmcm space…
View article: Avoided Quantum Tricritical Point and Emergence of a Canted Magnetic Phase in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>LaCr</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:mrow><mml:msub><mml:mrow><mml:mi>Fe</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Sb</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:mrow></mml:math>
Avoided Quantum Tricritical Point and Emergence of a Canted Magnetic Phase in Open
New phases or new phenomena are often observed near-zero temperature phase transitions. These new effects represent nature's way of avoiding quantum critical phase transitions. Here, we look at the quantum tricritical point (QTCP), the spe…
View article: Non-Fermi-liquid behavior consistent with a preasymptotic disorder-tuned ferromagnetic quantum critical point in the heavy fermion system <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>CeTi</mml:mi><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi mathvariant="normal">V</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>Ge</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>
Non-Fermi-liquid behavior consistent with a preasymptotic disorder-tuned ferromagnetic quantum critical point in the heavy fermion system Open
An investigation of the thermodynamic and electrical transport properties of the isoelectronic chemical substitution series CeTi1−xVxGe3 (CTVG) single crystals is reported. As x increases, the ferromagnetic (FM) transition temperature is s…
View article: β-Phase Yb<sub>5</sub>Sb<sub>3</sub>H<sub><i>x</i></sub>: Magnetic and Thermoelectric Properties Traversing from an Electride to a Semiconductor
β-Phase Yb<sub>5</sub>Sb<sub>3</sub>H<sub><i>x</i></sub>: Magnetic and Thermoelectric Properties Traversing from an Electride to a Semiconductor Open
An electride is a compound that contains a localized electron in an empty crystallographic site. This class of materials has a wide range of applications, including superconductivity, batteries, photonics, and catalysis. Both polymorphs of…
View article: Absence of strong magnetic fluctuations or interactions in the normal state of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>LaNiGa</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Absence of strong magnetic fluctuations or interactions in the normal state of Open
Here, we present nuclear magnetic (NMR) and quadrupole (NQR) resonance and magnetization data in the normal state of the topological crystalline superconductor LaNiGa2. We find no evidence of significant magnetic fluctuations or…
View article: Superconductivity Mediated by Nematic Fluctuations in Tetragonal $\textrm{Fe}\textrm{Se}_{1-x}\textrm{S}_{x}$
Superconductivity Mediated by Nematic Fluctuations in Tetragonal $\textrm{Fe}\textrm{Se}_{1-x}\textrm{S}_{x}$ Open
Nematic phases, where electrons in a solid spontaneously break rotational symmetry while preserving the translational symmetry, exist in several families of unconventional superconductors [1, 2]. Although superconductivity mediated by nema…
View article: Electron irradiation reveals robust fully gapped superconductivity in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>LaNiGa</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>
Electron irradiation reveals robust fully gapped superconductivity in Open
The effects of 2.5-MeV electron irradiation were studied in the superconducting phase of single crystals of LaNiGa2, using measurements of electrical transport and radio-frequency magnetic susceptibility. The London penetration …
View article: Non-Fermi-liquid behavior in a ferromagnetic heavy fermion system CeTi$_{1-x}$V$_{x}$Ge$_{3}$
Non-Fermi-liquid behavior in a ferromagnetic heavy fermion system CeTi$_{1-x}$V$_{x}$Ge$_{3}$ Open
An investigation of the thermodynamic and electrical transport properties of the isoelectronic chemical substitution series CeTi$_{1-x}$V$_{x}$Ge$_{3}$ (CTVG) single crystals is reported. As x increases, the ferromagnetic (FM) transition t…
View article: Author Correction: A rule-free workflow for the automated generation of databases from scientific literature
Author Correction: A rule-free workflow for the automated generation of databases from scientific literature Open
View article: Symmetry Enforced Fermi Surface Degeneracies Observed in Time-Reversal Symmetry-Breaking Superconductor LaNiGa$_2$
Symmetry Enforced Fermi Surface Degeneracies Observed in Time-Reversal Symmetry-Breaking Superconductor LaNiGa$_2$ Open
LaNiGa$_2$ is superconductor that breaks time-reversal symmetry in the superconducting state without any known nearby magnetism. Recently, single crystals of LaNiGa$_2$ have been synthesized, revealing a nonsymmorphic Cmcm space group. Her…
View article: A rule-free workflow for the automated generation of databases from scientific literature
A rule-free workflow for the automated generation of databases from scientific literature Open
In recent times, transformer networks have achieved state-of-the-art performance in a wide range of natural language processing tasks. Here we present a workflow based on the fine-tuning of BERT models for different downstream tasks, which…
View article: Electron irradiation reveals robust fully gapped superconductivity in LaNiGa$_{2}$
Electron irradiation reveals robust fully gapped superconductivity in LaNiGa$_{2}$ Open
The effects of 2.5 MeV electron irradiation were studied in the superconducting phase of single crystals of LaNiGa$_2$, using measurements of electrical transport and radio-frequency magnetic susceptibility. The London penetration depth is…
View article: Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa$_2$
Absence of strong magnetic fluctuations or interactions in the normal state of LaNiGa$_2$ Open
We present nuclear magnetic (NMR) and qudrupole (NQR) resonance and magnetization data in the normal state of the topological crystalline superconductor LaNiGa$_2$. We find no evidence of magnetic fluctuations or enhanced paramagnetism. Th…
View article: Gap structure of the non-symmorphic superconductor LaNiGa2 probed by muSR
Gap structure of the non-symmorphic superconductor LaNiGa2 probed by muSR Open
We report muon spin rotation (muSR) measurements of the temperature dependence of the absolute value of the magnetic penetration depth and the magnetic field dependence of the vortex core size in the mixed state of the non-symmorphic super…
View article: Electronic stripe patterns near the fermi level of tetragonal Fe(Se,S)
Electronic stripe patterns near the fermi level of tetragonal Fe(Se,S) Open
View article: Machine learning predictions of high-Curie-temperature materials
Machine learning predictions of high-Curie-temperature materials Open
Technologies that function at room temperature often require magnets with a high Curie temperature, TC, and can be improved with better materials. Discovering magnetic materials with a substantial TC is challenging because of the large num…
View article: Machine Learning Predictions of High-Curie-Temperature Materials
Machine Learning Predictions of High-Curie-Temperature Materials Open
Technologies that function at room temperature often require magnets with a high Curie temperature, $T_\mathrm{C}$, and can be improved with better materials. Discovering magnetic materials with a substantial $T_\mathrm{C}$ is challenging …
View article: Magnetic structure and Kondo lattice behavior in CeVGe$_3$: an NMR and neutron scattering study
Magnetic structure and Kondo lattice behavior in CeVGe$_3$: an NMR and neutron scattering study Open
We present nuclear magnetic resonance (NMR), neutron diffraction, magnetization, and transport measurements on a single crystal and powder of CeVGe$_3$. This material exhibits heavy fermion behavior at low temperature, accompanied by antif…
View article: Electronic Stripe Patterns Near the Fermi Level of Tetragonal Fe(Se,S)
Electronic Stripe Patterns Near the Fermi Level of Tetragonal Fe(Se,S) Open
FeSe$_{1-x}$S$_x$ remains one of the most enigmatic systems of Fe-based superconductors. While much is known about the orthorhombic parent compound, FeSe, the tetragonal samples, FeSe$_{1-x}$S$_x$ with x>0.17, remain relatively unexplored.…
View article: Thermoelectric Properties of Ba<sub>2–<i>x</i></sub>Eu<sub><i>x</i></sub>ZnSb<sub>2</sub>, a Zintl Phase with One-Dimensional Covalent Chains
Thermoelectric Properties of Ba<sub>2–<i>x</i></sub>Eu<sub><i>x</i></sub>ZnSb<sub>2</sub>, a Zintl Phase with One-Dimensional Covalent Chains Open
The compound Ba2ZnSb2 has been predicted to be a promising thermoelectric material, potentially achieving zT > 2 at 900 K due to its one-dimensional chains of edge-shared [ZnSb4/2]4- tetra…