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Open AccessVortex entropy and superconducting fluctuations in ultrathin underdoped Bi2Sr2CaCu2O8+x superconductor
Vortices in superconductors can help identify emergent phenomena but certain fundamental aspects of vortices, such as their entropy, remain poorly understood. Here, we study the vortex entropy in underdoped Bi2Sr
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Superionic fluoride gate dielectrics with low diffusion barrier for two-dimensional electronics
Exploration of new dielectrics with a large capacitive coupling is an essential topic in modern electronics when conventional dielectrics suffer from the leakage issue near the breakdown limit. Here, to addres...
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Open AccessElectronic inhomogeneity and phase fluctuation in one-unit-cell FeSe films
One-unit-cell FeSe films on SrTiO3 substrates are of great interest owing to significantly enlarged pairing gaps characterized by two coherence peaks at ±10 meV and ±20 meV. In-situ transport measurement is desir...
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Open AccessIntrinsic surface p-wave superconductivity in layered AuSn4
The search for topological superconductivity (TSC) is currently an exciting pursuit, since non-trivial topological superconducting phases could host exotic Majorana modes. However, the difficulty in fabricatin...
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Open AccessIdentifying s-wave pairing symmetry in single-layer FeSe from topologically trivial edge states
Determining the pairing symmetry of single-layer FeSe on SrTiO3 is the key to understanding the enhanced pairing mechanism. It also guides the search for superconductors with high transition temperatures. Despite...
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Open AccessProminent Josephson tunneling between twisted single copper oxide planes of Bi2Sr2-xLaxCuO6+y
Josephson tunneling in twisted cuprate junctions provides a litmus test for the pairing symmetry, which is fundamental for understanding the microscopic mechanism of high temperature superconductivity. This is...
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Obtaining tetragonal FeAs layer and superconducting KxFe2As2 by molecular beam epitaxy
Atomic characterization on tetragonal FeAs layer and engineering FeAs superlattices is highly desirable to get deep insight into the multi-band superconductivity in iron-pnictides. We fabricate the tetragonal ...
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Preparation of spatially uniform monolayer FeSexTe1−x (0 < x ≤ 1) by topotactic reaction
Spatially uniform high-temperature superconducting films are highly desirable for exploring novel properties and popularizing applications. To improve the uniformity, we fabricate monolayer FeSexTe1−x (0 < x ≤ 1)...
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Open AccessAnomalous superconducting proximity effect of planar Pb–RhPb2 heterojunctions in the clean limit
Interest in superconducting proximity effect has been revived by the exploitation of Andreev states and by the possible emergence of Majorana bound states at the interface. Spectroscopy of these states has bee...
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Tailored Ising superconductivity in intercalated bulk NbSe2
Reducing the dimensionality of layered materials can result in properties distinct from their bulk crystals1–3. However, the emergent properties in atomically thin samples, in particular in metallic monolayer fla...
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Simultaneous switching of supramolecular chirality and organizational chirality driven by Coulomb expansion
Chiral switching is a fascinating topic and plays an important role in construction of homochirality. Nevertheless, due to the complexity and flexibility of noncovalent interactions, switching the chirality of...
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Open AccessLittle-Parks like oscillations in lightly doped cuprate superconductors
Understanding the rich and competing electronic orders in cuprate superconductors may provide important insight into the mechanism of high-temperature superconductivity. Here, by measuring Bi2Sr2CaCu2O8+x in the ...
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Open AccessTuning the electronic states and superconductivity in alkali fulleride films
The successful preparation of superconducting alkali fulleride (AxC60, A = K, Rb, Cs) films using state-of-the-art molecular beam epitaxy overcomes the disadvantages of the air-sensitivity and phase separation in...
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Open AccessCoexistence of resistance oscillations and the anomalous metal phase in a lithium intercalated TiSe2 superconductor
Superconductivity and charge density wave (CDW) appear in the phase diagram of a variety of materials including the high-Tc cuprate family and many transition metal dichalcogenides (TMDs). Their interplay may giv...
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Open AccessMerohedral disorder and impurity impacts on superconductivity of fullerenes
Local quasiparticle states around impurities provide essential insight into the mechanism of unconventional superconductivity, especially when the candidate materials are proximate to an antiferromagnetic Mott...
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Open AccessIncommensurate smectic phase in close proximity to the high-Tc superconductor FeSe/SrTiO3
Superconductivity is significantly enhanced in monolayer FeSe grown on SrTiO3, but not for multilayer films, in which large strength of nematicity develops. However, the link between the high-transition temperatu...
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Emergent high-temperature superconductivity at interfaces
Low-dimensional superconductors have been at the forefront of physics research due to their rich physical properties such as high-temperature (Tc) superconductivity. In this article, we review the field of emerge...
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Evidence of anisotropic Majorana bound states in 2M-WS2
Searching for Majorana bound states has become an important topic because of its potential applications in topological quantum computing. 2M-phase WS2, a newly synthesized superconductor, not only presents the hi...
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Topological dynamical decoupling
We show that topological equivalence classes of circles in a two-dimensional square lattice can be used to design dynamical decoupling procedures to protect qubits attached on the edges of the lattice. Based o...
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Disorder-induced multifractal superconductivity in monolayer niobium dichalcogenides
The interplay between disorder and superconductivity is a subtle and fascinating phenomenon in quantum many-body physics. Conventional superconductors are insensitive to dilute non-magnetic impurities, known a...
