Results 101 to 110 of about 48,345 (314)

Anisotropic optical properties of single-crystal GdBa2Cu3O7-delta

open access: yes, 1995
The optical spectrum of reduced-T(c) GdBa2Cu3O7-delta has been measured for polarizations parallel and perpendicular to the ab plane. The sample was an oxygen-deficient single crystal with a large face containing the c axis.
Kamarás, Katalin   +2 more
core   +1 more source

Interferometric schemes: a probe for topological edge states, a tool in weak measurements [PDF]

open access: yes, 2014
In the first part of this thesis we propose interferometric schemes to probe the properties of edge states of topological insulators and superconductors.
Strübi, Grégory
core   +1 more source

Engineering CO2 Reduction Pathways via Alloy‐Support Interactions in Li‐CO2 Batteries

open access: yesAdvanced Materials, EarlyView.
Alloy‐support interactions in RuCu/NC induce interfacial charge redistribution and shift d‐band centers, steering CO2 reduction from Li2CO3 to metastable Li2C2O4. This pathway engineering lowers the rate‐determining barrier and suppresses carbonate formation, enabling high discharge voltage (3.23 V) in Li‐CO2 batteries with reduced overpotential (0.50 ...
Liang Sun   +8 more
wiley   +1 more source

Spin valley and giant quantum spin Hall gap of hydrofluorinated bismuth nanosheet

open access: yesScientific Reports, 2018
Spin-valley and electronic band topological properties have been extensively explored in quantum material science, yet their coexistence has rarely been realized in stoichiometric two-dimensional (2D) materials.
Heng Gao   +7 more
doaj   +1 more source

Strongly coupled artificial bulk HTS grain boundaries with high critical current densities

open access: yes, 2007
A multi-seeding process has been developed to fabricate single Y-Ba-Cu-O (YBCO) grains containing strong artificial grain boundaries. Multi-seeding of heterogeneous YBCO grains with controlled orientation was achieved using large Sm-Ba-Cu-O (SmBCO ...
Cardwell, DA   +3 more
core   +1 more source

Bias‐Field Free Single‐Frequency CW‐ODMR of Nitrogen‐Vacancy Centers in Diamond for the Detection of Transient Electrical Signals

open access: yesAdvanced Materials Interfaces, EarlyView.
Simplified quantum sensing technique for the detection of short electrical signals occurring in neuronal signaling or bioinspired technologies. We demonstrate a single frequency continuous‐wave optically detected magnetic resonance (CW‐ODMR) approach to sense signals that can be as short as 0.2 ms.
João Paulo Silva   +4 more
wiley   +1 more source

Low-loss α-tantalum coplanar waveguide resonators on silicon wafers: fabrication, characterization and surface modification

open access: yesMaterials for Quantum Technology
The performance of state-of-the-art superconducting quantum devices is currently limited by microwave dielectric loss at different interfaces. α -tantalum is a superconductor that has proven effective in reducing dielectric loss and improving device ...
D P Lozano   +21 more
doaj   +1 more source

Properties Of MgB2/Ga Composites Prepared By Mechanical Alloying

open access: yesArchives of Metallurgy and Materials, 2015
In this study, we examined the effect of Ga-doping and mechanical alloying in MgB2 on microstructural and phase evolution. A comparison was made between in-situ and ex-situ processed Mg-B-Ga samples.
Yoon K., Ahn J.-H.
doaj   +1 more source

A study of superconductivity in single crystals and thin films using muon-spin rotation and neutron scattering

open access: yes, 2009
The archetypal high temperature superconductor Bi₂Sr₂CaCu₂O[subscript[8+δ]] has been extensively investigated. However, until now, little has been known about the behaviour of the magnetic vortices inside the Vortex Glass and liquid state.
Heron, David Owen Goudie
core  

Van der Waals Chromium Telluride Thin Films Prepared by Hybrid Pulsed Laser Deposition With Tunable Magnetism

open access: yesAdvanced Materials Interfaces, EarlyView.
Epitaxial Cr(1+δ)Te2 thin films were synthesized via hybrid Pulsed Laser Deposition (PLD) that combined Molecular Beam Epitaxy (MBE) techniques with PLD. Control of the Cr intercalation, δ, enabled modulation of magnetic anisotropy, Curie temperature, and transport properties.
Pia Henning   +3 more
wiley   +1 more source

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