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View article: Implantation studies of low-energy positive muons in niobium thin films
Implantation studies of low-energy positive muons in niobium thin films Open
View article: Layer Stacking Dependent Suppression of Metallicity and Superconductivity in Sr <sub>2</sub> IrO <sub>4</sub> /YBa <sub>2</sub> Cu <sub>3</sub> O <sub>7</sub> Bilayers
Layer Stacking Dependent Suppression of Metallicity and Superconductivity in Sr <sub>2</sub> IrO <sub>4</sub> /YBa <sub>2</sub> Cu <sub>3</sub> O <sub>7</sub> Bilayers Open
Epitaxial thin‐film heterostructures of the strongly spin‐orbit coupled Mott‐insulator Sr 2 IrO 4 (SIO) and the cuprate high temperature superconductor YBa 2 Cu 3 O 7 − δ (YBCO) are grown with pulsed laser deposition (PLD). A high crystall…
View article: Niobium's intrinsic coherence length and penetration depth revisited using low-energy muon spin spectroscopy
Niobium's intrinsic coherence length and penetration depth revisited using low-energy muon spin spectroscopy Open
We report measurements of the London penetration depth ($λ_L$) and Bardeen-Cooper-Schrieffer (BCS) coherence length ($ξ_0$) in oxygen-doped niobium, with impurity concentrations spanning the "clean" to "dirty" limits. Depth-resolved low-en…
View article: Cu-spin Correlation in the Electron-overdoped High-Tc Cuprate Thin Films of La_2-x_Ce_x_CuO_4_ Probed by Low-energy Muons
Cu-spin Correlation in the Electron-overdoped High-Tc Cuprate Thin Films of La_2-x_Ce_x_CuO_4_ Probed by Low-energy Muons Open
We investigated the Cu-spin correlation in the overdoped regime of the electron-doped high-Tc cuprate thin films of La_2-x_Ce_x_CuO_4_, changing the reduction condition from muon spin relaxation using low-energy muons. The Cu-spin correlat…
View article: Microwave Spectroscopy of the Muonium $2S_{1/2}-2P_{3/2}$ Fine Structure Interval
Microwave Spectroscopy of the Muonium $2S_{1/2}-2P_{3/2}$ Fine Structure Interval Open
We report a microwave spectroscopy measurement of the muonium $2S_{1/2}-2P_{3/2}$ fine structure transition, yielding a transition frequency of $9871.0 \pm 7.0~\mathrm{MHz}$, in agreement with state-of-the-art QED predictions within one st…
View article: Monitoring the tagging efficiency of the low-energy muon beamline through background analysis: Insights into the long-term performance of ultrathin carbon foils
Monitoring the tagging efficiency of the low-energy muon beamline through background analysis: Insights into the long-term performance of ultrathin carbon foils Open
The efficient tagging of individual muons, along with the stability of the involved ultrathin carbon foil, is critical for ensuring fast, reliable, and reproducible low-energy muon spin rotation measurements. At the Paul Scherrer Institute…
View article: Pressure induced transition from chiral charge order to time-reversal symmetry-breaking superconducting state in Nb-doped CsV3Sb5
Pressure induced transition from chiral charge order to time-reversal symmetry-breaking superconducting state in Nb-doped CsV3Sb5 Open
Understanding how time-reversal symmetry (TRS) breaks in quantum materials is key to uncovering new states of matter and advancing quantum technologies. However, unraveling the interplay between TRS breaking, charge order, and superconduct…
View article: Coherent microwave control of coupled electron-muon centers
Coherent microwave control of coupled electron-muon centers Open
Coherent control by means of tailored excitation is a key to versatile experimental schemes for spectroscopic investigation and technological utilization of quantum systems. Here we study a quantum system which consists of a coupled electr…
View article: Drift time calibration of the ultra-low material budget GEM-based TPC for MIXE
Drift time calibration of the ultra-low material budget GEM-based TPC for MIXE Open
Muon-Induced X-ray Emission (MIXE) is a non-destructive analytical technique that leverages negative muons to probe elemental and isotopic compositions by detecting characteristic muonic X-rays emitted during atomic cascades and gamma rays…
View article: Unconventional polaronic ground state in superconducting LiTi$_2$O$_4$
Unconventional polaronic ground state in superconducting LiTi$_2$O$_4$ Open
Geometrically frustrated lattices can display a range of correlated phenomena, ranging from spin frustration and charge order to dispersionless flat bands due to quantum interference. One particularly compelling family of such materials is…
View article: The ultra-low material budget GEM-based TPC for tracking with VMM3a readout
The ultra-low material budget GEM-based TPC for tracking with VMM3a readout Open
The Gaseous Electron Multiplier-based Time Projection Chamber (GEM-TPC) in TWIN configuration for particle tracking has been consolidated after extensive investigations in different facilities to study its tracking performance. The most at…
View article: Magnetic Precursor to the Structural Phase Transition in V<sub>2</sub>O<sub>3</sub>
Magnetic Precursor to the Structural Phase Transition in V<sub>2</sub>O<sub>3</sub> Open
The coupling between structural, electronic and magnetic degrees of freedom across the metal‐insulator transition in V 2 O 3 makes it hard to determine the main driving mechanism behind the transition. Specifically, the role of magnetism i…
View article: Advanced muon-spin spectroscopy with high lateral resolution using Si-pixel detectors
Advanced muon-spin spectroscopy with high lateral resolution using Si-pixel detectors Open
Muon-spin spectroscopy at continuous sources has stagnated at a stopped muons rate of ~40 kHz for the last few decades. The major limiting factor is the requirement of a single muon in the sample during the typical 10 μs data gate window. …
View article: Monitoring the tagging efficiency of the Low-Energy Muon beamline through background analysis: Insights into the long-term performance of ultrathin carbon foils
Monitoring the tagging efficiency of the Low-Energy Muon beamline through background analysis: Insights into the long-term performance of ultrathin carbon foils Open
The efficient tagging of individual muons, along with the stability of the involved ultrathin carbon foil, is critical for ensuring fast, reliable and reproducible low-energy muon spin rotation (LE-$\mathrmμ$SR) measurements. At the Paul S…
View article: Magnetic Domain Suppression in Fe/Si Multilayers with 11B4C Integration for Polarizing Neutron Optics
Magnetic Domain Suppression in Fe/Si Multilayers with 11B4C Integration for Polarizing Neutron Optics Open
This study explores the impact of boron carbide (B4C) addition on magnetic domains within Fe/Si multilayers through off-specular neutron scattering with polarization analysis. The incorporation of B4C induces amorphization in layers, disru…
View article: Drift time calibration of the ultra-low material budget GEM-based TPC for MIXE
Drift time calibration of the ultra-low material budget GEM-based TPC for MIXE Open
Muon-Induced X-ray Emission (MIXE) is a non-destructive analytical technique that leverages negative muons to probe elemental and isotopic compositions by detecting characteristic muonic X-rays emitted during atomic cascades and gamma rays…
View article: The Ultra-Low material budget GEM based TPC for tracking with VMM3a readout
The Ultra-Low material budget GEM based TPC for tracking with VMM3a readout Open
The Gaseous Electron Multiplier-based Time Projection Chamber (GEM-TPC) in TWIN configuration for particle tracking has been consolidated after extensive investigations in different facilities to study its tracking performance. The most at…
View article: Overcoming the probing-depth dilemma in spectroscopic analyses of batteries with muon-induced X-ray emission (MIXE)
Overcoming the probing-depth dilemma in spectroscopic analyses of batteries with muon-induced X-ray emission (MIXE) Open
An introductory guide to muon-induced X-ray emission (MIXE) for the battery community, highlighting both the potential and limitations of this novel characterization technique with extended probing depth.
View article: Pressure induced transition from chiral charge order to time-reversal symmetry-breaking superconducting state in Nb-doped CsV$_3$Sb$_5$
Pressure induced transition from chiral charge order to time-reversal symmetry-breaking superconducting state in Nb-doped CsV$_3$Sb$_5$ Open
The experimental realisation of unconventional superconductivity and charge order in kagome systems \textit{A}V$_3$Sb$_5$ is of critical importance. We conducted a highly systematic study of Cs(V$_{1-x}$Nb$_x$)$_3$Sb$_5$ with $x$=0.07 (Nb$…
View article: Magnetic precursor to the structural phase transition in V$_2$O$_3$
Magnetic precursor to the structural phase transition in V$_2$O$_3$ Open
The coupling between structural, electronic and magnetic degrees of freedom across the metal-insulator transition in V2O3 makes it hard to determine the main driving mechanism behind the transition. Specifically, the role of magnetism has …
View article: Depth-dependent study of time-reversal symmetry-breaking in the kagome superconductor AV3Sb5
Depth-dependent study of time-reversal symmetry-breaking in the kagome superconductor AV3Sb5 Open
View article: Absence of magnetic order in RuO2: insights from μSR spectroscopy and neutron diffraction
Absence of magnetic order in RuO2: insights from μSR spectroscopy and neutron diffraction Open
Altermagnets are a novel class of magnetic materials, where magnetic order is staggered both in coordinate and momentum space. The metallic rutile oxide RuO 2 , long believed to be a textbook Pauli paramagnet, recently emerged as a putativ…
View article: Emergence of Interfacial Magnetism in Strongly‐Correlated Nickelate‐Titanate Superlattices
Emergence of Interfacial Magnetism in Strongly‐Correlated Nickelate‐Titanate Superlattices Open
Strongly‐correlated transition‐metal oxides are widely known for their various exotic phenomena. This is exemplified by rare‐earth nickelates such as LaNiO 3 , which possess intimate interconnections between their electronic, spin, and lat…
View article: Exploring the border traps near the valence band in the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:msub><mml:mrow><mml:mi>Si</mml:mi><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:math>-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mrow><mml:mi>Si</mml:mi><mml:mi mathvariant="normal">C</mml:mi></mml:mrow></mml:math> system using above-band-gap optical excitation
Exploring the border traps near the valence band in the - system using above-band-gap optical excitation Open
Studying near-valence-band (EV) defects at the insulator–n-type 4H-SiC interface is challenging due to the low minority carrier concentration. Herein, we present a technique for characterizing the border traps near EV in an n-type 4H-SiC M…
View article: Observation of Mermin-Wagner behavior in LaFeO3/SrTiO3 superlattices
Observation of Mermin-Wagner behavior in LaFeO3/SrTiO3 superlattices Open
View article: Improving the beam quality of the low-energy muon beamline at Paul Scherrer Institute: Characterization of ultrathin carbon foils
Improving the beam quality of the low-energy muon beamline at Paul Scherrer Institute: Characterization of ultrathin carbon foils Open
The low-energy muon (LEM) beamline at the Paul Scherrer Institute currently stands as the world’s only facility providing a continuous beam of low-energy muons with keV energies for conducting muon spin rotation experiments on a nanometer …
View article: Observation and manipulation of charge carrier distribution at the SiO$_2$/Si interface
Observation and manipulation of charge carrier distribution at the SiO$_2$/Si interface Open
Using low-energy muons, we map the charge carrier concentration as a function of depth and electric field across the \SiOSi interface up to a depth of \SI{100}{\nano\meter} in Si-based MOS capacitors. The results show that the formation of…
View article: Absence of magnetic order in RuO$_2$: insights from $μ$SR spectroscopy and neutron diffraction
Absence of magnetic order in RuO$_2$: insights from $μ$SR spectroscopy and neutron diffraction Open
Altermagnets are a novel class of magnetic materials besides ferro- and antiferromagnets, where the interplay of lattice and spin symmetries produces a magnetic order that is staggered both in coordinate as well as momentum space. The meta…
View article: Electrically active defects induced by thermal oxidation and post-oxidation annealing of n-type 4H-SiC
Electrically active defects induced by thermal oxidation and post-oxidation annealing of n-type 4H-SiC Open
In this work, we have performed a detailed study of the defects created in the bulk of 4H-SiC after thermal oxidation and post oxidation annealing using deep level transient spectroscopy and minority carrier transient spectroscopy (MCTS). …
View article: Magnetic Fluctuations as a Potential Source of Losses in Superconducting Quantum Devices
Magnetic Fluctuations as a Potential Source of Losses in Superconducting Quantum Devices Open