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Article
Open AccessHigh-entropy engineering of the crystal and electronic structures in a Dirac material
Dirac and Weyl semimetals are a central topic of contemporary condensed matter physics, and the discovery of new compounds with Dirac/Weyl electronic states is crucial to the advancement of topological materia...
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Article
Open AccessRevealing Fermi surface evolution and Berry curvature in an ideal type-II Weyl semimetal
In type-II Weyl semimetals (WSMs), the tilting of the Weyl cones leads to the coexistence of electron and hole pockets that touch at the Weyl nodes. These electrons and holes experience the Berry curvature gen...
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Article
Two-dimensional heavy fermions in the van der Waals metal CeSiI
Heavy-fermion metals are prototype systems for observing emergent quantum phases driven by electronic interactions1–6. A long-standing aspiration is the dimensional reduction of these materials to exert control o...
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Article
Open AccessLarge anomalous Hall effect and negative magnetoresistance in half-topological semimetals
Proposed mechanisms for large intrinsic anomalous Hall effect (AHE) in magnetic topological semimetals include diverging Berry curvatures of Weyl nodes, anticrossing nodal rings or points of non-trivial bands....
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Article
Open AccessHigh-pressure induced Weyl semimetal phase in 2D Tellurium
Relativistic Weyl fermion quasiparticles in Weyl semimetal bring the electron’s chirality degree of freedom into the electrical transport and give rise to exotic phenomena. A topological phase transition from ...
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Article
Three-dimensional flat bands in pyrochlore metal CaNi2
Electronic flat-band materials host quantum states characterized by a quenched kinetic energy. These flat bands are often conducive to enhanced electron correlation effects and emergent quantum phases of matter1....
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Article
Open AccessRobust three-dimensional type-II Dirac semimetal state in SrAgBi
Topological semimetals such as Dirac, Weyl or nodal line semimetals are widely studied for their peculiar properties including high Fermi velocities, small effective masses and high magnetoresistance. When the...
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Chapter and Conference Paper
Towards Automating Semantic Relationship Awareness in Operational Technology Monitoring
Critical infrastructures in areas like road traffic management naturally rely on the broad use of “Operational Technology (OT)” to ensure efficient and safe road traffic monitoring (RTM) through “OT objects” like...
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Article
Open AccessTowards understanding the magnetic properties of the breathing pyrochlore compound Ba3Yb2Zn5O11through single-crystal studies
Ba3Yb2Zn5O11 is exceptional among breathing pyrochlore compounds for being in the nearly-decoupled limit where inter-tetrahedron interactions are weak, hosting isolated clusters or molecular magnet-like tetrahedr...
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Article
Open AccessAnomalous high-field magnetotransport in CaFeAsF due to the quantum Hall effect
CaFeAsF is an iron-based superconductor parent compound whose Fermi surface is quasi-two dimensional, composed of Dirac-electron and Schrödinger-hole cylinders elongated along the c axis. We measured the longitud...
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Article
Fermi surface transformation at the pseudogap critical point of a cuprate superconductor
The nature of the pseudogap phase remains a major puzzle in our understanding of cuprate high-temperature superconductivity. Whether or not this metallic phase is defined by any of the reported broken symmetri...
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Article
Open AccessDiscovery of quantum phases in the Shastry-Sutherland compound SrCu2(BO3)2 under extreme conditions of field and pressure
The 2-dimensional layered oxide material SrCu2(BO3)2, long studied as a realization of the Shastry-Sutherland spin topology, exhibits a range of intriguing physics as a function of both hydrostatic pressure and m...
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Article
Open AccessToward tunable quantum transport and novel magnetic states in Eu1−xSrxMn1−zSb2 (z < 0.05)
Magnetic semimetals are very promising for potential applications in novel spintronic devices. Nevertheless, realizing tunable topological states with magnetism in a controllable way is challenging. Here, we r...
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Chapter and Conference Paper
Semantic-Driven Mining of Functional Dependencies in Large-Scale Systems-of-Systems
Large-scale Systems-of-Systems prevalent in the area of critical infrastructures such as Intelligent Transportation Systems are characterized by massive heterogeneities. Hence, cross-system oriented monitoring of...
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Chapter and Conference Paper
Dependency Mining in IoT - From Research to Practice in Intelligent Transportation Systems
Large-scale Internet-of-Things (IoT) environments such as Intelligent Transportation Systems (ITS) are characterized by massive heterogeneities. Hence, cross-system monitoring of the underlying IoT-based Operatio...
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Chapter and Conference Paper
Bridging Signals and Human Intelligence
Large-scale Internet-of-Things (IoT) environments such as Intelligent Transportation Systems are facing tremendous challenges wrt. monitoring their operational technology (OT) not least due to its inherent het...
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Article
Open AccessPhase diagram of YbZnGaO4 in applied magnetic field
Recently, Yb-based triangular-lattice antiferromagnets have garnered significant interest as possible quantum spin-liquid candidates. One example is YbMgGaO4, which showed many promising spin-liquid features, but...
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Article
Open AccessEvidence of two-dimensional flat band at the surface of antiferromagnetic kagome metal FeSn
The kagome lattice has long been regarded as a theoretical framework that connects lattice geometry to unusual singularities in electronic structure. Transition metal kagome compounds have been recently identi...
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Article
Open AccessExpansion of the high field-boosted superconductivity in UTe2 under pressure
Magnetic field-induced superconductivity is a fascinating quantum phenomenon, whose origin is yet to be fully understood. The recently discovered spin-triplet superconductor, UTe2, exhibits two such superconducti...
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Article
Linear-in temperature resistivity from an isotropic Planckian scattering rate
A variety of ‘strange metals’ exhibit resistivity that decreases linearly with temperature as the temperature decreases to zero1–3, in contrast to conventional metals where resistivity decreases quadratically wit...
