Results 31 to 40 of about 14,384 (217)

Cathodoluminescence and tip-plasmon resonance of Bi2Te3 triangular nanostructures.

open access: yesPLoS ONE
Bi2Te3, as a topological insulator, is able to support plasmonic emission in the visible spectral range. Thin Bi2Te3 flakes can be exfoliated directly from a Bi2Te3 crystal, and the shape of Bi2Te3 flakes can be further modified by focused ion beam ...
Qigeng Yan   +4 more
doaj   +1 more source

Band structure of topological insulators from noise measurements in tunnel junctions [PDF]

open access: yes, 2015
The unique properties of spin-polarized surface or edge states in topological insulators (TIs) make these quantum coherent systems interesting from the point of view of both fundamental physics and their implementation in low power spintronic devices ...
Aliev, Farkhad G.   +6 more
core   +2 more sources

Orbit- and Atom-Resolved Spin Textures of Intrinsic, Extrinsic and Hybridized Dirac Cone States

open access: yes, 2014
Combining first-principles calculations and spin- and angle-resolved photoemission spectroscopy measurements, we identify the helical spin textures for three different Dirac cone states in the interfaced systems of a 2D topological insulator (TI) of Bi ...
Dil, J. H.   +9 more
core   +1 more source

Superconductivity and non-metallicity induced by doping the topological insulators Bi2Se3 and Bi2Te3

open access: yes, 2010
We show that by Ca-doping the Bi2Se3 topological insulator, the Fermi level can be fine tuned to fall inside the band gap and therefore suppress the bulk conductivity. Non-metallic Bi2Se3 crystals are obtained.
Alpichshev   +31 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Passivation of Bi2Te3 Topological Insulator by Transferred CVD‐Graphene: Toward Intermixing‐Free Interfaces

open access: yesAdvanced Materials Interfaces, 2022
The investigation, and ultimate application, of topological insulators, typically involve exposure to ambient conditions or their integration with metals, which lead to surface oxidation or material intermixing.
Regina Galceran   +10 more
doaj   +1 more source

Acoustic impedance and interface phonon scattering in Bi$_2$Te$_3$ and other semiconducting materials

open access: yes, 2012
We present first principles calculations of the phonon dispersions of Bi2Te3 and discuss these in relation to the acoustic phonon interface scattering in ceramics.
Chen, Xin   +2 more
core   +1 more source

Magnetic and Structural Response Tuned by Coexisting Mn Concentration‐Dependent Phases in MnBi2Te4 Thin Film Grown on GaAs(001) by Molecular Beam Epitaxy

open access: yesAdvanced Functional Materials, EarlyView.
The study explores structural and magnetic properties of one of the most recent topological quantum materials (MnBi2Te4). The Mn‐poor structure leads to stacking faults (quintuple layer ‐ QL of Bi2Te3 formation instead of a septuple layer ‐ SL of MnBi2Te4), resulting in a coexistence between weak antiferromagnetism and ferromagnetism.
Wesley F. Inoch   +10 more
wiley   +1 more source

Permeable carbon fiber based thermoelectric film with exceptional EMI shielding performance and sensor capabilities

open access: yesJournal of Advanced Ceramics
Thermoelectric (TE) technologies offer a promising approach for directly converting skin heat into electricity for wearable electronics. Recognizing p-type Sb2Te3 and n-type Bi2Te3 as top-performing materials at room temperature, their rigid inorganic ...
Junjie Zhu   +5 more
doaj   +1 more source

Investigating phase transition and morphology of Bi-Te thermoelectric system

open access: yesMaterials Today Advances, 2020
The optimization of secondary phase in thermoelectric (TE) materials can help to improve the efficiency of the material. Being a potential candidate for lower temperature TE application, bismuth telluride (Bi2Te3) nanoparticles were synthesized via ...
V. Thakur   +4 more
doaj   +1 more source

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