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npj Quantum Materials
Scopus
ISSN 2397-4648 · Nature Portfolio · 655 artikel di indeks
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Artikel Jurnal
Single-band fluorides akin to infinite-layer cuprate superconductors
Abstract Recent experimental discoveries of infinite- and finite-layer nickelate superconductors have highlighted the importance of a single-band $${d}_{{x}^{2}-{y}^{2}}$$ d x 2 − y 2 Fermi surface for enabling unconventional superconductivity similar to cuprates. Motivated by this, we use density…
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Artikel Jurnal
Symmetry-engineered chiral magnetotransport in the correlated oxide SrNbO3
Abstract Chiral transport in topological materials, arising from the interplay between topology and chirality, holds significant potential for energy-efficient spintronics and quantum information technologies through dissipationless, coherent charge flow. However, the emergence of chiral transport…
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Artikel Jurnal
Anomalous superfluid density in pair-density-wave superconductors
Abstract Pair-density-wave (PDW) states are a long-sought-after phase of quantum materials, with the potential to unravel the mysteries of high-T c cuprates and other strongly correlated superconductors. Yet, surprisingly, a key signature of stable superconductivity, namely the positivity of the…
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Artikel Jurnal
Manipulating the long-range strong photon-magnon coupling via a saturable gain
Abstract Long-range tunable strongly coupled photon-magnon systems are crucial for large-scale hybrid networks enabling coherent information processing. Here, we experimentally fabricate a photon-magnon system with a saturable gain, achieving long-range strong coupling in the linear regime for the…
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Artikel Jurnal
Magnetization orientation-dependent Shubnikov-de Haas oscillations in ferromagnetic Weyl semimetal Co3Sn2S2
Abstract We report a study of Shubnikov–de Haas oscillations in high-quality single crystals of ferromagnetic Weyl semimetal Co3Sn2S2. The Fermi surfaces resolved in our experiments are three-dimensional and reflect an underlying trigonal crystallographic symmetry. Combined with density functional…
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Artikel Jurnal
Interlayer pairing in bilayer nickelates
Abstract The discovery of T c ~ 80 K superconductivity in pressurized La3Ni2O7 has launched a new platform to study high-temperature superconductivity. Using non-perturbative dynamic cluster approximation quantum Monte Carlo calculations, we characterize the magnetic and superconducting pairing…
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Artikel Jurnal
Surface wet-etched Y3Fe5O12 films with perpendicular magnetic anisotropy for ultrahigh density spintronic device applications
Abstract Yttrium iron garnet (YIG) film, especially with perpendicular magnetic anisotropy (PMA), is a promising material for energy-efficient spintronic devices due to its extremely low damping constant. However, a poorly crystallized layer tends to form on the top surface of the YIG film during…
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Artikel Jurnal
Optical diode effect at telecom wavelengths in a polar magnet
Abstract Magnetoelectric multiferroics such as rare earth manganites host nonreciprocal behavior driven by low symmetry, spin-orbit coupling, and toroidal moments, although less has been done to explore whether lanthanides like Er3+ might extend functionality into the hard infrared for optical…
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Artikel Jurnal
Field-tailoring quantum materials via magneto-synthesis: metastable metallic and magnetically suppressed phases in a trimer iridate
Abstract We demonstrate that applying modest magnetic fields (
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Artikel Jurnal
Kitaev interaction and proximate higher-order skyrmion crystal in the triangular lattice van der Waals antiferromagnet NiI 2
Abstract Topological spin textures are a spectacular manifestation of the chirality of the magnetic nanostructures protected by topology. Most known skyrmion systems are restricted to a topological charge of one, require an external magnetic field for stabilization, and are only reported in a few…
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Artikel Jurnal
Competition between charge-density-wave and superconducting orders on eight-leg square Hubbard cylinders
Abstract The issue of whether d-wave superconductivity (SC) occurs in the square-lattice Hubbard model with U of order of the bandwidth has been one of the most debated issues to emerge from the study of high temperature SC. Here, we report variational results on eight-leg cylinders with…
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Artikel Jurnal
Dynamics and lifetime of geometric excitations in moiré systems
Abstract Recently observed spin-2 collective excitations, known as chiral graviton modes, encode noncommutative geometry and topological information in fractional quantum Hall systems. An outstanding question is whether such chiral geometric excitations remain well-defined in moiré Chern bands…
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Artikel Jurnal
Thermal quench dynamics of visons in gapless Kitaev spin liquid
Abstract Understanding the nonequilibrium relaxation dynamics of quantum spin liquids is an important and relatively unexplored frontier, where fractionalized quasiparticles and emergent gauge fields can give rise to dynamical behaviors far beyond those of conventional magnets. Here we study the…
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Artikel Jurnal
Kugel-Khomskii materials
Abstract The Kugel-Khomskii super-exchange mechanism for orbital ordering is a pillar of orbital physics. Besides orbital phase transitions, it can give rise to a plethora of emergent phenomena, from exotic magnetic states, orbital-liquid phases, hidden order and much more. Yet, to identify real…
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Artikel Jurnal
Anisotropic multi-Q order in Co x TaS2
Abstract The cobalt-intercalated transition metal dichalcogenide Co x TaS2 hosts a rich landscape of magnetic phases that depend sensitively on x. While the stoichiometric compound with x = 1/3 exhibits a single magnetic transition, samples with x≤0.325 display two transitions with an anomalous…
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Artikel Jurnal
The influence of phonon symmetry and electronic structure on the electron-phonon coupling momentum dependence in cuprates
Abstract The experimental determination of the magnitude and momentum dependence of electron-phonon coupling (EPC) is an outstanding problem in condensed matter physics. The intensity of phonon peaks in Resonant Inelastic X-ray Scattering (RIXS) spectra can be related to the underlying EPC strength…
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Artikel Jurnal
Directional ballistic magnetotransport in the delafossite metals PdCoO2 and PtCoO2
Abstract Studies of electronic transport in width-restricted channels of PdCoO2 have recently revealed a novel ‘directional ballistic’ regime, in which ballistic propagation of electrons on an anisotropic Fermi surface breaks the symmetries of bulk transport. Here we introduce a magnetic field to…
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Artikel Jurnal
Topological quantum materials: kagome, chiral, and square-net frameworks
Abstract Topological quantum materials have emerged as a frontier in condensed matter physics, with electronic states governed by symmetry and lattice geometry. Among the various lattices, kagome, chiral, and square-net lattices represent distinct structural motifs where topology is intrinsically…
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Artikel Jurnal
Altermagnetism and weak ferromagnetism
Abstract Using a realistic model relevant to La2CuO4 and other altermagnetic perovskites, we study interrelations between weak spin ferromagnetism, anomalous Hall conductivity, σ x y , and net orbital magnetization $${\mathcal{M}}$$ M . All of them are intertwined with the vector of…
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Artikel Jurnal
Photostriction-driven phase transition in layered chiral NbOX2 crystals: electrical-field-controlled enantiomer selectivity
Abstract The physical properties of chiral crystals are inherently tied to their structural handedness, making external control of chirality a key challenge for functional materials design. However, the ability to select between structural enantiomers remains challenging, both theoretically and…