Vincent H. Crespi
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View article: 2D Indium Oxide at the Epitaxial Graphene/SIC Interface: Synthesis, Structure, Properties, and Devices
2D Indium Oxide at the Epitaxial Graphene/SIC Interface: Synthesis, Structure, Properties, and Devices Open
Scaled and high‐quality insulators are crucial for fabricating 2D/3D hybrid vertical electronic devices such as metal‐oxide‐semiconductor (MOS) based Schottky diodes and hot electron transistors, the production of which is constrained by t…
View article: Orbital Hybridization-Induced Ising-Type Superconductivity in a Confined Gallium Layer
Orbital Hybridization-Induced Ising-Type Superconductivity in a Confined Gallium Layer Open
In low-dimensional superconductors, the interplay between quantum confinement and interfacial hybridization effects can reshape Cooper pair wavefunctions and induce novel forms of unconventional superconductivity. In this work, we employ a…
View article: Tunable phononic quantum interference induced by two-dimensional metals
Tunable phononic quantum interference induced by two-dimensional metals Open
Harnessing quantum interference among bosons provides opportunities due to their longer coherence time than fermions. Fano resonance, an example of quantum interference between discrete and continuous states, is marked by an asymmetric lin…
View article: Chemically‐Disordered Transparent Conductive Perovskites With High Crystalline Fidelity
Chemically‐Disordered Transparent Conductive Perovskites With High Crystalline Fidelity Open
This manuscript presents a working model linking chemical disorder and transport properties in correlated‐electron perovskites with high‐entropy formulations and a framework to actively design them. This work demonstrates this new learning…
View article: Chemically‐Disordered Transparent Conductive Perovskites With High Crystalline Fidelity
Chemically‐Disordered Transparent Conductive Perovskites With High Crystalline Fidelity Open
This manuscript presents a working model linking chemical disorder and transport properties in correlated‐electron perovskites with high‐entropy formulations and a framework to actively design them. This work demonstrates this new learning…
View article: Cyclobutane-linked Nanothreads through Thermal and Photochemically Mediated Polymerization of Cyclohexadiene
Cyclobutane-linked Nanothreads through Thermal and Photochemically Mediated Polymerization of Cyclohexadiene Open
Carbon nanothreads are a rapidly growing class of 1D nanomaterials with sp3-hybridized diamond-like backbones. They are typically synthesized through pressure-induced polymerizations of aromatics, resulting in diverse structures and functi…
View article: Discovery of a layered multiferroic compound Cu <sub> 1− <i>x</i> </sub> Mn <sub> 1+ <i>y</i> </sub> SiTe <sub>3</sub> with strong magnetoelectric coupling
Discovery of a layered multiferroic compound Cu <sub> 1− <i>x</i> </sub> Mn <sub> 1+ <i>y</i> </sub> SiTe <sub>3</sub> with strong magnetoelectric coupling Open
Multiferroic materials host both ferroelectricity and magnetism, offering potential for magnetic memory and spin transistor applications. Here, we report a multiferroic chalcogenide semiconductor Cu 1−x Mn 1+y SiTe 3 (0.04 ≤ x ≤ 0.26; 0.03…
View article: Cyclobutane-linked nanothreads through thermal and photochemically mediated polymerization of cyclohexadiene
Cyclobutane-linked nanothreads through thermal and photochemically mediated polymerization of cyclohexadiene Open
We present the pressure-induced polymerization of 1,4-cyclohexadiene, wherein thermal methods may access multiple reaction pathways. In contrast, light enables solely cyclobutane-based nanothreads to arise from a single viable reaction pat…
View article: Order evolution from a high‐entropy matrix: Understanding and predicting paths to low‐temperature equilibrium
Order evolution from a high‐entropy matrix: Understanding and predicting paths to low‐temperature equilibrium Open
Interest in high‐entropy inorganic compounds originates from their ability to stabilize cations and anions in local environments that rarely occur at standard temperature and pressure. This leads to new crystalline phases in many‐cation fo…
View article: Giant and Tunable Bosonic Quantum Interference Induced by Two-Dimensional Metals
Giant and Tunable Bosonic Quantum Interference Induced by Two-Dimensional Metals Open
Harnessing quantum interference among bosons provides significant opportunities as bosons often carry longer coherence time than fermions. As an example of quantum interference, Fano resonance involving phonons or photons describes the cou…
View article: A Chemical Mechanism for the Bistable‐to‐Oscillatory Transition in Colloidal Aggregates of Silver Phosphate
A Chemical Mechanism for the Bistable‐to‐Oscillatory Transition in Colloidal Aggregates of Silver Phosphate Open
We previously reported collective behavior in colloidal aggregates of silver phosphate in H 2 O 2 and under UV light. Diffusiophoretic interactions between aggregates lead to non‐linear behavior such as oscillations and synchronization, in…
View article: Untangling individual cation roles in rock salt high-entropy oxides
Untangling individual cation roles in rock salt high-entropy oxides Open
We unravel the distinct roles each cation plays in phase evolution, stability, and properties within Mg1/5Co1/5Ni1/5Cu1/5Zn1/5O high-entropy oxide (HEO) by integrating experimental findings, thermodynamic analyses, and first-principles pre…
View article: Emergence of inertia in the low-Reynolds regime of self-diffusiophoretic motion
Emergence of inertia in the low-Reynolds regime of self-diffusiophoretic motion Open
For isotropic swimming particles driven by self-diffusiophoresis at zero Reynolds number (where particle velocity responds instantaneously to applied force), the diffusive timescale of emitted solute can produce an emergent quasi-inertial …
View article: Effects of Vanadium Doping on the Optical Response and Electronic Structure of WS<sub>2</sub> Monolayers
Effects of Vanadium Doping on the Optical Response and Electronic Structure of WS<sub>2</sub> Monolayers Open
2D dilute magnetic semiconductors have been recently reported in transition metal dichalcogenides doped with spin‐polarized transition metal atoms, for example vanadium‐doped WS 2 monolayers, which exhibit room‐temperature ferromagnetic or…
View article: Order evolution from a high-entropy matrix: understanding and predicting paths to low temperature equilibrium
Order evolution from a high-entropy matrix: understanding and predicting paths to low temperature equilibrium Open
Interest in high-entropy inorganic compounds originates from their ability to stabilize cations and anions in local environments that rarely occur at standard temperature and pressure. This leads to new crystalline phases in many-cation fo…
View article: Effects of Vanadium Doping on the Optical Response and Electronic Structure of WS$_{2}$ Monolayers
Effects of Vanadium Doping on the Optical Response and Electronic Structure of WS$_{2}$ Monolayers Open
Two-dimensional dilute magnetic semiconductors has been recently reported in semiconducting transition metal dichalcogenides by the introduction of spin-polarized transition metal atoms as dopants. This is the case of vanadium-doped WS$_2$…
View article: Strain-Induced 2H to 1T′ Phase Transition in Suspended MoTe<sub>2</sub> Using Electric Double Layer Gating
Strain-Induced 2H to 1T′ Phase Transition in Suspended MoTe<sub>2</sub> Using Electric Double Layer Gating Open
MoTe2 can be converted from the semiconducting (2H) phase to the semimetallic (1T') phase by several stimuli including heat, electrochemical doping, and strain. This type of phase transition, if reversible and gate-controlled, could be use…
View article: Vibrational Entropic Stabilization of Layered Chalcogenides: From Ordered Vacancy Compounds to 2D Layers
Vibrational Entropic Stabilization of Layered Chalcogenides: From Ordered Vacancy Compounds to 2D Layers Open
Despite the rapid pace of computationally and experimentally discovering new two-dimensional layered materials, a general criteria for a given compound to prefer a layered structure over a non-layered one remains unclear. Articulating such…
View article: High‐entropy oxides: Harnessing crystalline disorder for emergent functionality
High‐entropy oxides: Harnessing crystalline disorder for emergent functionality Open
High‐entropy materials defy historical materials design paradigms by leveraging chemical disorder to kinetically stabilize novel crystalline solid solutions comprised of many end‐members. Formulational diversity results in local crystal st…
View article: Healing of a Topological Scar: Coordination Defects in a Honeycomb Lattice
Healing of a Topological Scar: Coordination Defects in a Honeycomb Lattice Open
A crystal structure with a point defect typically returns to its ideal local structure upon moving a few bond lengths away from the defect; topological defects such as dislocations or disclinations also heal rapidly in this regard. Here we…
View article: Classical triangular lattice antiferromagnetic Ising model as a free-fermion/superconductor system
Classical triangular lattice antiferromagnetic Ising model as a free-fermion/superconductor system Open
We present a treatment of the triangular lattice antiferromagnetic Ising model (TAFIM) based on a small number of elementary ideas common to statistical and solid-state physics. The TAFIM is represented as a reduced BCS model in one space,…
View article: Controlling nanothread backbone structure through precursor design
Controlling nanothread backbone structure through precursor design Open
Nanothreads are 1D carbon-based nanomaterials produced by pressure-induced polymerization of multiply unsaturated (and typically aromatic) precursors with multiple bonds between adjacent precursors. We computationally design non-covalent i…
View article: Metallic carbon materials
Metallic carbon materials Open
Novel metallic forms of planar carbon are described, as well as methods of designing and making them. Nonhexagonal arrangements of carbon are introduced into a graphite carbon network essentially without destroying the planar structure. Sp…
View article: Step engineering for nucleation and domain orientation control in WSe2 epitaxy on c-plane sapphire
Step engineering for nucleation and domain orientation control in WSe2 epitaxy on c-plane sapphire Open
Movies showing the nucleation of WSe2 on Al2O2 with mixed (Se/O) and single (Se) steps.