Dynamically Tunable Terahertz Emission Enabled by Anomalous Optical Phonon Responses in Lead Telluride

ACS Photonics ◽  
2021 ◽  
Author(s):  
Burak Guzelturk ◽  
Mariano Trigo ◽  
Olivier Delaire ◽  
David A. Reis ◽  
Aaron M. Lindenberg
Keyword(s):  
Optical Phonon ◽  
Lead Telluride ◽  
Terahertz Emission

Well-defined quantum dots and broadening of optical phonon line from hydrothermal method

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102010-102014 ◽  
Author(s):  
Deepika Jamwal ◽  
Dolly Rana ◽  
Pardeep Singh ◽  
Dinesh Pathak ◽  
Susheel Kalia ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrothermal Method ◽  
Optical Phonon ◽  
Gemini Surfactants ◽  
Lead Telluride ◽  
Phonon Line ◽  
Stabilizing Agents ◽  
Cationic Gemini Surfactants ◽  
Highly Hydrophobic ◽  
Size Controlled

A versatile and facile methodology is presented for size-controlled, lead telluride nanoparticles in the presence of highly hydrophobic cationic gemini surfactants (12–2–12, 14–2–14 and 16–2–16) as capping/stabilizing agents.

Electron diffraction detection of ordliking in annealed PbTe thin film

1990 ◽  
Vol 48 (4) ◽  
pp. 1018-1019
Author(s):  
Karimat El-Sayed
Keyword(s):  
Thin Film ◽  
Electron Diffraction ◽  
Lead Telluride ◽  
Structural Basis ◽  
Face Centered Cubic ◽  
X Ray ◽  
Polycrystalline Thin Films ◽  
Stage Process ◽  
Diffraction Patterns ◽  
Face Centered

Lead telluride is an important semiconductor of many applications. Many Investigators showed that there are anamolous descripancies in most of the electrophysical properties of PbTe polycrystalline thin films on annealing. X-Ray and electron diffraction studies are being undertaken in the present work in order to explain the cause of this anamolous behaviour.Figures 1-3 show the electron diffraction of the unheated, heated in air at 100°C and heated in air at 250°C respectively of a 300°A polycrystalline PbTe thin film. It can be seen that Fig. 1 is a typical [100] projection of a face centered cubic with unmixed (hkl) indices. Fig. 2 shows the appearance of faint superlattice reflections having mixed (hkl) indices. Fig. 3 shows the disappearance of thf superlattice reflections and the appearance of polycrystalline PbO phase superimposed on the [l00] PbTe diffraction patterns. The mechanism of this three stage process can be explained on structural basis as follows :

Liquid helium-free high-T c superconducting terahertz emission system and its applications

2020 ◽  
Vol 59 (10) ◽  
pp. 105004
Author(s):  
Yoshihiko Saiwai ◽  
Takanari Kashiwagi ◽  
Kurama Nakade ◽  
Manabu Tsujimoto ◽  
Hidetoshi Minami ◽  
...  
Keyword(s):  
Liquid Helium ◽  
Terahertz Emission ◽  
Emission System

scholarly journals Carrier dynamics in ion-implanted GaAs studied by simulation and observation of terahertz emission

2004 ◽  
Vol 70 (23) ◽  
Author(s):  
J. Lloyd-Hughes ◽  
E. Castro-Camus ◽  
M. Fraser ◽  
C. Jagadish ◽  
M. Johnston
Keyword(s):  
Carrier Dynamics ◽  
Terahertz Emission ◽  
Ion Implanted

Revisiting the thermoelectric properties of lead telluride

2021 ◽  
pp. 100713
Author(s):  
Pradeep Kumar Sharma ◽  
T.D. Senguttuvan ◽  
Vijay Kumar Sharma ◽  
Sujeet Chaudhary
Keyword(s):  
Thermoelectric Properties ◽  
Lead Telluride

Terahertz emission from CoFeB/Cr/Pt trilayers: The role of Cr as both a spin current transporter and generator

2021 ◽  
Vol 118 (23) ◽  
pp. 232401
Author(s):  
Qi Zhang ◽  
Zhuangzhuang Chen ◽  
Huafeng Shi ◽  
Xin Chen ◽  
Abhishek Talapatra ◽  
...  
Keyword(s):  
Spin Current ◽  
Terahertz Emission

An interpretation on the thermodynamic properties of liquid Pb–Te alloys

2020 ◽  
Vol 39 (1) ◽  
pp. 297-303
Author(s):  
Toru Akasofu ◽  
Masanobu Kusakabe ◽  
Shigeru Tamaki
Keyword(s):  
Thermodynamic Properties ◽  
Electron Affinity ◽  
Ionization Energy ◽  
Narrow Band ◽  
Structural Information ◽  
Lead Telluride ◽  
Liquid Lead ◽  
Metallic State ◽  
Ternary Solution ◽  
Conduction Electrons

AbstractThe bonding character of liquid lead telluride \text{PbTe} is thermodynamically investigated in detail. Its possibility as an ionic melt composed of cation {\text{Pb}}^{2+} and anion {\text{Te}}^{2-} is not acceptable, by comparing the ionization energy of \text{Pb} atom, electron affinity of \text{Te} atom and the ionic bonding energy due to the cation {\text{Pb}}^{2+} and anion {\text{Te}}^{2-} with the help of structural information. Solid lead telluride PbTe as a narrow band gap semiconductor might yield easily the overlapping of the tail of valence band and that of conduction one. And on melting, it becomes to an ill-conditioned metallic state, which concept is supported by the electrical behaviors of liquid Pb–Te alloys observed by the present authors. As structural information tells us about the partial remain of some sorts of covalent-type mono-dipole and poly-dipole of the molecule \text{PbTe}, all systems are thermodynamically explained in terms of a mixture of these molecules and cations {\text{Pb}}^{4+} and {\text{Te}}^{2+} and a small amount of the conduction electrons are set free from these elements based on the ternary solution model.

scholarly journals Spintronic terahertz emission from Ni/Pt bilayer grown on MgO

2021 ◽  
Vol 1943 (1) ◽  
pp. 012035
Author(s):  
J P Ferrolino ◽  
N I Cabello ◽  
A De Los Reyes ◽  
V K Mag-Usara ◽  
J P Afalla ◽  
...  
Keyword(s):  
Terahertz Emission
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