Craig Polley
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View article: Persistence of Charge Ordering Instability to Coulomb Engineering in the Excitonic Insulator Candidate <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>TiSe</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math>
Persistence of Charge Ordering Instability to Coulomb Engineering in the Excitonic Insulator Candidate Open
TiSe 2 has long been considered one of the best candidate materials to host the elusive excitonic insulator (EI) phase. However, a finite coupling to the lattice can generically be expected, while a lack of “smoking-gun” signatures for…
View article: Hund’s flat band in a frustrated spinel oxide
Hund’s flat band in a frustrated spinel oxide Open
Electronic flat bands associated with quenched kinetic energy and heavy electron mass have attracted great interest for promoting strong electronic correlations and emergent phenomena such as high-temperature charge fractionalization and s…
View article: Disorder-driven non-Anderson transition in a Weyl semimetal
Disorder-driven non-Anderson transition in a Weyl semimetal Open
For several decades, it was widely believed that a noninteracting disordered electronic system could only undergo an Anderson metal–insulator transition due to Anderson localization. However, numerous recent theoretical works have predicte…
View article: Fermi surface and pseudogap in highly doped Sr2IrO4
Fermi surface and pseudogap in highly doped Sr2IrO4 Open
The fate of the Fermi surface in bulk electron-doped Sr 2 IrO 4 remains elusive, as does the origin and extension of its pseudogap phase. Here, we use high-resolution angle-resolved photoelectron spectroscopy (ARPES) to investigate the ele…
View article: Topological Weyl altermagnetism in CrSb
Topological Weyl altermagnetism in CrSb Open
Altermagnets constitute a novel, third fundamental class of collinear magnetic ordered materials, alongside with ferro- and antiferromagnets. They share with conventional antiferromagnets the feature of a vanishing net magnetization. At th…
Enhanced Superconducting Gap in the Outer Plane of the Trilayer Cuprate Open
View article: Persistence of charge ordering instability to Coulomb engineering in the excitonic insulator candidate TiSe$_2$
Persistence of charge ordering instability to Coulomb engineering in the excitonic insulator candidate TiSe$_2$ Open
TiSe$_2$ has long been considered one of the best candidate materials to host the elusive excitonic insulator (EI) phase. However, a finite coupling to the lattice can generically be expected, while a lack of "smoking-gun" signatures for t…
View article: Commissioning of the Multipole Injection Kicker in the MAX IV 1.5 GeV ring
Commissioning of the Multipole Injection Kicker in the MAX IV 1.5 GeV ring Open
The Multipole Injection Kicker (MIK) installed in the 3 GeV ring of MAX IV, is a success story in the use of a non-linear field device ensuring an almost transparent injection into the first ever built fourth-generation storage ring. Reduc…
View article: Duality and degeneracy lifting in two-dimensional electron liquids on SrTiO3(001)
Duality and degeneracy lifting in two-dimensional electron liquids on SrTiO3(001) Open
Two-dimensional electron liquids (2DELs) have increasing technological relevance for ultrafast electronics and spintronics, yet significant gaps in their fundamental understanding are exemplified on the prototypical SrTiO3. We c…
View article: First mirror stability at the MAX IV soft x-ray beamlines
First mirror stability at the MAX IV soft x-ray beamlines Open
Horizontal drift of the beam on the MAX IV soft x-ray beamlines was observed with a 1-2 hour settling time and strong dependence on the undulator power setting. A water cooled, suspended electrode was designed and is shown to reduce the ho…
View article: Pb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into graphene
Pb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into graphene Open
Intercalation is a robust approach for modulating the properties of epitaxial graphene on SiC and stabilizing two-dimensional intercalant layers at the graphene/SiC interface. In this paper, we present synchrotron-based angle resolved phot…
View article: Non‐Hermitian Boundary in a Surface Selective Reconstructed Magnetic Weyl Semimetal (Adv. Mater. 14/2025)
Non‐Hermitian Boundary in a Surface Selective Reconstructed Magnetic Weyl Semimetal (Adv. Mater. 14/2025) Open
View article: Field-Free Spin–Orbit Torque Switching of Canted van der Waals Magnets
Field-Free Spin–Orbit Torque Switching of Canted van der Waals Magnets Open
Spin-orbit torque (SOT) magnetization switching is crucial for next-generation energy-efficient spintronic technologies. The recent discovery of van der Waals (vdW) magnets holds promise for such SOT phenomena because of their tunable magn…
View article: Fermiology and Band Structure of Oxygen-Terminated <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Ti</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">T</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math> MXene
Fermiology and Band Structure of Oxygen-Terminated MXene Open
The class of two-dimensional carbides and nitrides known as MXenes exhibit remarkable electronic properties. Tailoring these properties, however, requires an in-depth understanding of the band structure and Fermi-surface topology. Surface …
View article: Hund flat band in a frustrated spinel oxide
Hund flat band in a frustrated spinel oxide Open
Electronic flat bands associated with quenched kinetic energy and heavy electron mass have attracted great interest for promoting strong electronic correlations and emergent phenomena such as high-temperature charge fractionalization and s…
View article: Non‐Hermitian Boundary in a Surface Selective Reconstructed Magnetic Weyl Semimetal
Non‐Hermitian Boundary in a Surface Selective Reconstructed Magnetic Weyl Semimetal Open
Non‐Hermitian physics, studying systems described by non‐Hermitian Hamiltonians, reveals unique phenomena not present in Hermitian systems. Unlike Hermitian systems, non‐Hermitian systems have complex eigenvalues, making their effects less…
View article: Pb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into graphene
Pb-intercalated epitaxial graphene on SiC: Full insight into band structure and orbital character of interlayer Pb, and charge transfer into graphene Open
Intercalation is a robust approach for modulating the properties of epitaxial graphene on SiC and stabilizing two-dimensional (2D) intercalant layers at the graphene/SiC interface. In this work, we present synchrotron-based angle resolved …
View article: Publisher Correction: Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor
Publisher Correction: Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor Open
View article: Charge transfer between van der Waals coupled metallic 2D layers
Charge transfer between van der Waals coupled metallic 2D layers Open
Charge transfer in a K/graphene/Pb-monolayer heterostack on SiC: Approximately 44% of the charge donated from the K adlayer is transferred into the next-nearest neighbour Pb-layer, while the rest remains in the graphene.
View article: Inhomogeneous reduction-annealing effects on the electron-doped cuprate superconductor revealed by micro-focused angle-resolved photoemission spectroscopy
Inhomogeneous reduction-annealing effects on the electron-doped cuprate superconductor revealed by micro-focused angle-resolved photoemission spectroscopy Open
The development of the protect-annealing method has extended the superconductivity of the electron-doped cuprate Pr$_{1.3-x}$La$_{0.7}$Ce$_{x}$CuO$_{4}$ (PLCCO) into lower Ce concentrations, while the superconducting volume fraction decrea…
View article: Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor
Uniaxial strain tuning of charge modulation and singularity in a kagome superconductor Open
View article: Fermi surface and pseudogap in highly doped Sr$_{2}$IrO$_{4}$
Fermi surface and pseudogap in highly doped Sr$_{2}$IrO$_{4}$ Open
The fate of the Fermi surface in bulk electron-doped Sr$_{2}$IrO$_{4}$ remains elusive, as does the origin and extension of its pseudogap phase. Here, we use high-resolution angle-resolved photoelectron spectroscopy (ARPES) to investigate …
View article: Discovery of an Antiferromagnetic Topological Nodal-line Kondo Semimetal
Discovery of an Antiferromagnetic Topological Nodal-line Kondo Semimetal Open
The symbiosis of strong interactions, flat bands, topology and symmetry has led to the discovery of exotic phases of matter, including fractional Chern insulators, correlated moiré topological superconductors, and Dirac and Weyl semimetals…
View article: Probing enhanced superconductivity in van der Waals polytypes of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi mathvariant="normal">V</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>TaS</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
Probing enhanced superconductivity in van der Waals polytypes of Open
Layered transition metal dichalcogenides (TMDs) stabilize in multiple structural forms with profoundly distinct and exotic electronic phases. Interfacing different layer types is a promising route to manipulate TMDs' properties, not only a…
View article: Probing enhanced superconductivity in van der Waals polytypes of V$_x$TaS$_2$
Probing enhanced superconductivity in van der Waals polytypes of V$_x$TaS$_2$ Open
Layered transition metal dichalcogenides (TMDs) stabilize in multiple structural forms with profoundly distinct and exotic electronic phases. Interfacing different layer types is a promising route to manipulate TMDs' properties, not only a…
View article: Electronic Structure and Kohn-Luttinger Superconductivity of Heavily-Doped Single-Layer Graphene
Electronic Structure and Kohn-Luttinger Superconductivity of Heavily-Doped Single-Layer Graphene Open
The existence of superconductivity (SC) in graphene appears to be established in both twisted and non-twisted multilayers. However, whether their building block, single-layer graphene (SLG), can also host SC remains an open question. Earli…
View article: Contrasting electron-phonon interaction between electron- and hole-doped cuprates
Contrasting electron-phonon interaction between electron- and hole-doped cuprates Open
Spin- and charge-lattice interactions are potential key factors in the microscopic mechanism of high-temperature superconductivity in cuprates. Although both interactions can dramatically shape the low-energy electronic structure, their ph…
View article: Chemical Trends of the Bulk and Surface Termination-Dependent Electronic Structure of Metal-Intercalated Transition Metal Dichalcogenides
Chemical Trends of the Bulk and Surface Termination-Dependent Electronic Structure of Metal-Intercalated Transition Metal Dichalcogenides Open
The addition of metal intercalants into the van der Waals gaps of transition metal dichalcogenides has shown great promise as a method for controlling their functional properties. For example, chiral helimagnetic states, current-induced ma…
View article: The Bloch Beamline at MAX IV: Micro-Spot ARPES from a Conventional, Full-Featured Beamline
The Bloch Beamline at MAX IV: Micro-Spot ARPES from a Conventional, Full-Featured Beamline Open
View article: Topological Weyl Altermagnetism in CrSb
Topological Weyl Altermagnetism in CrSb Open
Altermagnets constitute a novel, third fundamental class of collinear magnetic ordered materials, alongside with ferro- and antiferromagnets. They share with conventional antiferromagnets the feature of a vanishing net magnetization. At th…