Dong-Hui Lu
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View article: Anomalous Nodal Gap in a Doped Spin- <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mn>1</mml:mn> <mml:mo>/</mml:mo> <mml:mn>2</mml:mn> </mml:mrow> </mml:math> Antiferromagnetic Mott Insulator
Anomalous Nodal Gap in a Doped Spin- Antiferromagnetic Mott Insulator Open
Many emergent phenomena appear in doped Mott insulators near the insulator-to-metal transition. In high-temperature cuprate superconductors, superconductivity arises when antiferromagnetic (AFM) order is gradually suppressed by carrier dop…
View article: Nonmonotonic Band Flattening near the Magic Angle of Twisted Bilayer <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>MoTe</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math>
Nonmonotonic Band Flattening near the Magic Angle of Twisted Bilayer Open
Twisted bilayer MoTe 2 ( tMoTe 2 ) is an emergent platform for exploring exotic quantum phases driven by the interplay between nontrivial band topology and strong electron correlations. Direct experimental access to its mom…
View article: Hund's coupling assisted orbital-selective superconductivity in Ba1-xKxFe2As2
Hund's coupling assisted orbital-selective superconductivity in Ba1-xKxFe2As2 Open
While the superconducting transition temperature of hole-doped Ba_{1-x}K_{x}Fe_{2}As_{2} decreases past optimal doping, superconductivity does not completely disappear even for the fully doped KFe_{2}As_{2} compound. In fact, superconducti…
View article: Machine Learning Powered Feasible Path Framework with Adaptive Sampling for Black-box Optimization
Machine Learning Powered Feasible Path Framework with Adaptive Sampling for Black-box Optimization Open
Black-box optimization (BBO) involves functions that are unknown, inexact and/or expensive-to-evaluate. Existing BBO algorithms face several challenges, including high computational cost from extensive evaluations, difficulty in handling c…
View article: Altermagnetic Band Splitting in 10 nm Epitaxial CrSb Thin Films
Altermagnetic Band Splitting in 10 nm Epitaxial CrSb Thin Films Open
Altermagnets are a newly identified family of collinear antiferromagnets with a momentum‐dependent spin‐split band structure of non‐relativistic origin, derived from spin‐group symmetry‐protected crystal structures. Among candidate alterma…
View article: Role of Fe intercalation on the electronic correlation in resistively switchable antiferromagnet Fe$_{x}$NbS$_2$
Role of Fe intercalation on the electronic correlation in resistively switchable antiferromagnet Fe$_{x}$NbS$_2$ Open
Among the family of intercalated transition-metal dichalcogenides (TMDs), Fe$_{x}$NbS$_2$ is found to possess unique current-induced resistive switching behaviors, tunable antiferromagnetic states, and a commensurate charge order, all of w…
View article: Spin excitations and flat electronic bands in a Cr-based kagome superconductor
Spin excitations and flat electronic bands in a Cr-based kagome superconductor Open
In the quest for topology- and correlation-driven quantum states, kagome lattice materials have garnered significant interest for their band structures, featuring flat bands (FBs) from the quantum destructive interference of the electronic…
View article: Superconducting coherence boosted by outer-layer metallic screening in multilayered cuprates
Superconducting coherence boosted by outer-layer metallic screening in multilayered cuprates Open
In multilayered high-Tc cuprates with three or more CuO2 layers per unit cell, the inner CuO2 planes (IPs) are spatially separated from the dopant layers and thus remain cleaner than the outer planes (OPs). While both interlayer coupling a…
View article: Observation of two cascading screening processes in an iron-based superconductor
Observation of two cascading screening processes in an iron-based superconductor Open
Understanding how renormalized quasiparticles emerge in strongly correlated electron materials provides a challenge for both experiment and theory. It has been predicted that distinctive spin and orbital screening mechanisms drive this pro…
View article: Disentangling the intertwined orders in a magnetic kagome metal
Disentangling the intertwined orders in a magnetic kagome metal Open
Intertwined orders appear when multiple orders are strongly interacting, and kagome metals have emerged as new platforms to explore exotic phases. FeGe has been found to develop a charge density wave (CDW) order within magnetic phase, sugg…
View article: Surface preparation method for investigating the three-dimensional electronic structure of perovskite nickelates
Surface preparation method for investigating the three-dimensional electronic structure of perovskite nickelates Open
The investigation of the electronic structures on perovskite oxides using surface-sensitive spectroscopy techniques is often hindered by their “uncleavable” nature, typically requiring expensive and complex experimental setups that integra…
View article: Observation of Orbital-Selective Dual Modulations in an Anisotropic Antiferromagnetic Kagome Metal <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>TbTi</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Bi</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
Observation of Orbital-Selective Dual Modulations in an Anisotropic Antiferromagnetic Kagome Metal Open
Orbital selectivity is pivotal in dictating the phase diagrams of multiorbital systems, with prominent examples including the orbital-selective Mott phase and superconductivity. The intercalation of anisotropic layers represents an effecti…
View article: Introducing new resonant soft x-ray scattering capability in SSRL
Introducing new resonant soft x-ray scattering capability in SSRL Open
Resonant soft x-ray scattering (RSXS) is a powerful technique for probing both spatial and electronic structures within solid-state systems. We present a newly developed RSXS capability at beamline 13-3 of the Stanford Synchrotron Radiatio…
View article: Kramers nodal lines in intercalated TaS2 superconductors
Kramers nodal lines in intercalated TaS2 superconductors Open
Kramers degeneracy is one fundamental embodiment of the quantum mechanical nature of particles with half-integer spin under time reversal symmetry. Under the chiral and noncentrosymmetric achiral crystalline symmetries, Kramers degeneracy …
View article: Electronic structure of compressively strained thin film La$_2$PrNi$_2$O$_7$
Electronic structure of compressively strained thin film La$_2$PrNi$_2$O$_7$ Open
The discovery of superconductivity in the bulk nickelates under high pressure is a major advance in physics. The recent observation of superconductivity at ambient pressure in compressively strained bilayer nickelate thin films has now ena…
View article: Electron correlation and incipient flat bands in the Kagome superconductor CsCr3Sb5
Electron correlation and incipient flat bands in the Kagome superconductor CsCr3Sb5 Open
Correlated kagome materials exhibit a compelling interplay between lattice geometry, electron correlation, and topology. In particular, the flat bands near the Fermi level provide a fertile playground for novel many-body states. Here we in…
View article: Single-cell RNA sequencing advances in revealing the development and progression of MASH: the identifications and interactions of non-parenchymal cells
Single-cell RNA sequencing advances in revealing the development and progression of MASH: the identifications and interactions of non-parenchymal cells Open
Developing drugs for the treatment of Metabolic Associated Steatohepatitis (MASH) has always been a significant challenge. Researchers have been dedicated to exploring drugs and therapeutic strategies to alleviate disease progression, but …
View article: Pseudogap in electron-doped cuprates: Strong correlation leading to band splitting
Pseudogap in electron-doped cuprates: Strong correlation leading to band splitting Open
The pseudogap phenomena have been a long-standing mystery of the cuprate high-temperature superconductors. The pseudogap in the electron-doped cuprates has been attributed to band folding due to antiferromagnetic (AFM) long-range order or …
View article: Observation of Orbital-Selective Dual Modulations in an Anisotropic Antiferromagnetic Kagome Metal TbTi3Bi4
Observation of Orbital-Selective Dual Modulations in an Anisotropic Antiferromagnetic Kagome Metal TbTi3Bi4 Open
Orbital selectivity is pivotal in dictating the phase diagrams of multiorbital systems, with prominent examples including the orbital-selective Mott phase and superconductivity, etc. The intercalation of anisotropic layers represents an ef…
View article: Near-half-metallic state in the half Heusler PtMnSb film on a III-V substrate
Near-half-metallic state in the half Heusler PtMnSb film on a III-V substrate Open
The interplay between half-metallic ferromagnetism and spin-orbit coupling within the inversion symmetry-broken structure of half Heuslers provides an ideal platform for various spintronics functionalities. Taking advantage of good lattice…
View article: Colossal magnetoresistance from spin-polarized polarons in an Ising system
Colossal magnetoresistance from spin-polarized polarons in an Ising system Open
Recent experiments suggest a new paradigm toward novel colossal magnetoresistance (CMR) in a family of materials EuM X (M Cd, In, Zn; X P, As), distinct from the traditional avenues involving Kondo–Ruderman–Kittel–Kasuya–Yosida c…
View article: Emergence of a Bandgap in Nano-Scale Graphite: A Computational and Experimental Study
Emergence of a Bandgap in Nano-Scale Graphite: A Computational and Experimental Study Open
Bandgaps in layered materials are critical for enabling functionalities such as tunable photodetection, efficient energy conversion, and nonlinear optical responses, which are essential for next-generation photonic and quantum devices. Gap…
View article: Colossal magnetoresistance from spin-polarized polarons in an Ising system
Colossal magnetoresistance from spin-polarized polarons in an Ising system Open
Recent experiments suggest a new paradigm towards novel colossal magnetoresistance (CMR) in a family of materials EuM$_2$X$_2$(M=Cd, In, Zn; X=P, As), distinct from the traditional avenues involving Kondo-RKKY crossovers, magnetic phase tr…
View article: Dispersion kinks from electronic correlations in an unconventional iron-based superconductor
Dispersion kinks from electronic correlations in an unconventional iron-based superconductor Open
The attractive interaction in conventional BCS superconductors is provided by a bosonic mode. However, the pairing glue of most unconventional superconductors is unknown. The effect of electron-boson coupling is therefore extensively studi…