A5048915749- Quantum and electron transport phenomena
- Rare-earth and actinide compounds
- Physics of Superconductivity and Magnetism
- Iron-based superconductors research
- Quantum many-body systems
- Digital Economy and Work Transformation
- Surface and Thin Film Phenomena
- Arctic and Russian Policy Studies
- Topological Materials and Phenomena
- European and International Law Studies
- Advanced Thermodynamics and Statistical Mechanics
- Social Policy and Reform Studies
- Advanced Chemical Physics Studies
- Innovation, Technology, and Society
- Cold Atom Physics and Bose-Einstein Condensates
- Sharing Economy and Platforms
- Labor Movements and Unions
- Molecular Junctions and Nanostructures
- Magnetic Properties of Alloys
- Advanced Condensed Matter Physics
- Theoretical and Computational Physics
- International Law and Human Rights
- Management and Organizational Studies
- Sociology and Education Studies
- Advancements in Semiconductor Devices and Circuit Design
National Yang Ming Chiao Tung University
2022-2024
Brandenburg University of Technology Cottbus-Senftenberg
2024
Technische Universität Berlin
2018-2023
University of Lapland
2014-2023
Institute of International Relations Prague
2023
Zhejiang University
2015-2021
Institute of Modern Physics
2018-2021
Arctic Research Centre
2020-2021
The Ark
2013-2021
Universität Hamburg
2010-2020
Quantum criticality arises when a macroscopic phase of matter undergoes continuous transformation at zero temperature. While the collective fluctuations quantum-critical points are being increasingly recognized as playing an important role in wide range quantum materials, nature underlying excitations remains poorly understood. Here we report in-depth measurements Hall effect heavy-fermion metal YbRh2Si2, prototypical system for criticality. We isolate rapid crossover isothermal coefficient...
Whirly1 was shown to be dually located in chloroplasts and nucleus of the same cell. To investigate whether protein translocates from nucleus, we inserted a construct encoding an HA‐tagged into plastid genome tobacco. Although tagged synthesized plastids, it detected nuclei. Dual location confirmed by immunocytological analyses. These results indicate that plastidial is translocated where affects expression target genes such as PR1 . Our support role plastid‐nucleus communication.
Zusammenfassung Die Digitalisierung gilt derzeit als Auslöser eines radikalen Strukturwandels. Es wird erwartet, dass zunehmend mehr ökonomische Aktivitäten erfolgreich auf digitale Märkte verlagert werden. Aus wirtschaftssoziologischer Perspektive sind diese Erwartungen erklärungsbedürftig. Unsicherheit digitalen Märkten ist vergleichsweise groß. Dieser Artikel nutzt die wirtschaftssoziologischen Theoriebausteine der Kontrollkonzepte von Fligstein (2001) und Koordinationsprobleme des...
Heavy-fermion systems share some of the strange metal phenomenology seen in other unconventional superconductors, providing a unique opportunity to set metals broader context. Central understanding heavy-fermion is interplay localization and itinerancy. These materials acquire high electronic masses concomitant Fermi volume increase as $f$ electrons delocalize at low temperatures. However, despite wide-spread acceptance this view, direct microscopic verification has been lacking. Here we...
Quantum critical behavior occurs at low temperatures where quantum fluctuations become more important than thermal fluctuations. Of particular current interest is unconventional criticality, which lacks a classical counterpart. Angle resolved photoemission and scanning tunneling microscopy are experimental techniques that measure single-particle excitations, recently been used to probe strongly correlated metals near points Here, how the properties reflect criticality discussed, prospect for...
Abstract This Special Issue advances a new understanding of digital platforms as dynamic and relational. An archetypal transaction platform, we argue, is comprised three canonical social relationships which exist in tension with each other. The first mutuality—the practices sharing reciprocity animated the early days ‘sharing economy’. second autonomy—representing desire for freedom independence attracting many earners to platforms. third domination—the exercise power control drives platform...
We present an extension of the noncrossing approximation (NCA), which is widely used to calculate properties Anderson impurity models in limit infinite Coulomb repulsion $\stackrel{\ensuremath{\rightarrow}}{U}\ensuremath{\infty},$ case finite U. A self-consistent conserving pseudoparticle representation derived by symmetrizing usual NCA diagrams with respect empty and doubly occupied local states. This requires summation skeleton generating functional thus defining ``symmetrized finite-$U$...
Abstract Debates on digitalisation in Germany often refer to ‘Industrie 4.0’ describing a seamless and technology‐driven process spearheaded by manufacturing. This view conflicts with sociological arguments, assuming highly differentiated processes of digitalisation. We review the literature empirically test core assumption that digital technologies relate organisational characteristics adoption differs according type technology. analyse German IAB‐Establishment‐Panel data, which contains...
The nonlinear conductance of semiconductor heterostructures and single molecule devices exhibiting Kondo physics has recently attracted attention. We address the observed sample dependence measured steady state transport coefficients by considering additional electronic contributions in effective low-energy model underlying these experiments that are absent particle-hole symmetric setups. A novel version superperturbation theory Hafermann et al. terms dual fermions is developed, which...
A key issue in heavy fermion research is how subtle changes the hybridization between $4f$ ($5f$) and conduction electrons can result fundamentally different ground states. ${\mathrm{CeRhIn}}_{5}$ stands out as a particularly notable example: when replacing Rh with either Co or Ir, antiferromagnetism gives way to superconductivity. In this photoemission study of ${\mathrm{CeRhIn}}_{5}$, we demonstrate that use resonant angle-resolved spectroscopy polarized light allows us extract detailed...
Disorder or sufficiently strong interactions can render a metallic state unstable causing it to turn into an insulating one. Despite the fact that interplay of these two routes vanishing conductivity has been central research topic, unifying picture not emerged so far. Here, we establish two-dimensional Falicov-Kimball model, one simplest lattice models electron correlation does allow for study this interplay. In particular, show model at particle-hole symmetry possesses three distinct...
This review discusses the heavy-fermion superconductivity in Ce- and U-based compounds crystallizing body-centered tetragonal ThCr2Si2 structure. Special attention will be paid to theoretical background of these systems which are located close a magnetic instability.
Self-consistent dynamical approximations for strongly correlated fermion systems are particularly successful in capturing the competition of local correlations. In these, effect spatially extended degrees freedom is usually only taken into account a mean field fashion or as secondary effect. As result, critical exponents associated with phase transitions have character. Here we demonstrate that diagrammatic multiscale methods anchored around indeed capable non-mean-field nature point lattice...
In this Rapid Communication, we present a comprehensive study of the Hubbard model on isotropic triangular lattice by using recently developed ladder dual-fermion approach. This method is nonlocal extension dynamical mean-field theory and free finite-size effect. addition to confirming much-discussed phase diagram at half-filling, our work provides insights into both hole- electron-doped regimes and, in particular, finite-temperature diagrams. We find system be short-range correlated with an...
Strong electron correlations can give rise to extraordinary properties of metals with renormalized Landau quasiparticles. Near a quantum critical point, these quasiparticles be destroyed and non-Fermi liquid behavior ensues. YbRh2Si2 is prototypical correlated metal exhibiting the formation quasiparticle Kondo lattice coherence, as well destruction at field-induced point. Here we show how, upon lowering temperature, coherence develops zero field finally gives way electronic excitations. By...
Crystal electric field states in rare earth intermetallics show an intricate entanglement with the many-body physics that occurs these systems and is known to lead a plethora of electronic phases. Here, we attempt trace different contributions crystal (CEF) splittings CeIrIn$_5$, heavy-fermion compound member Ce$M$In$_5$ ($M$= Co, Rh, Ir) family. To this end, utilize high-resolution resonant angle-resolved photoemission spectroscopy (ARPES) present spectroscopic study structure...
Conductance spectra and magnetoresistance hystereses point to topological p-wave superconductivity in CoSi 2 /TiSi junctions.