Advertisement

Topics

Strong second harmonic generation in two-dimensional ferroelectric IV-monochalcogenides.

08:00 EDT 12th September 2017 | BioPortfolio

Summary of "Strong second harmonic generation in two-dimensional ferroelectric IV-monochalcogenides."

The two-dimensional ferroelectrics GeS, GeSe, SnS and SnSe are expected to have large spontaneous in-plane electric polarization and enhanced shift-current response. Using density functional methods, we show that these materials also exhibit the largest effective second harmonic generation reported so far. It can reach magnitudes up to 10 nm/V which is about an order of magnitude larger than that of prototypical GaAs. To rationalize this result we model the optical response with a simple one-dimensional two-band model along the spontaneous polarization direction. Within this model the second-harmonic generation tensor is proportional to the shift-current response tensor. The large shift current and second harmonic responses of GeS, GeSe, SnS and SnSe make them promising non-linear materials for optoelectronic applications.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of physics. Condensed matter : an Institute of Physics journal
ISSN: 1361-648X
Pages:

Links

DeepDyve research library

PubMed Articles [10640 Associated PubMed Articles listed on BioPortfolio]

Ultrafast Reversal of the Ferroelectric Polarization.

We report on the demonstration of ultrafast optical reversal of the ferroelectric polarization in LiNbO_{3}. Rather than driving the ferroelectric mode directly, we couple to it indirectly by resonant...

Li7(TeO3)3F: A Lithium Fluoride Tellurite with Large Second Harmonic Generation Responses and a Short Ultraviolet Cutoff Edge.

Here, the combination of the strong electropositive lithium and the most electronegative fluorine with the TeO3 group afforded the first lithium fluoride tellurite, namely, Li7(TeO3)3F (P63), which wa...

Behavior of methylammonium dipoles in MAPbX3 (X = Br and I).

Dielectric constants of MAPbX3 (X = Br, I) in 1 kHz-1 MHz range show strong temperature dependencies near the room temperature in contrast to the nearly temperature independent dielectric constant of ...

All-fiber sixth-harmonic generation of deep UV.

We simulate and experimentally demonstrate deep ultraviolet generation from a 1550 nm laser source in a fully fiberized system by cascading second- and third-harmonic generation using a periodically ...

Nanoscale design of polarization in ultrathin ferroelectric heterostructures.

The success of oxide electronics depends on the ability to design functional properties such as ferroelectricity with atomic accuracy. However, despite tremendous advances in ferroelectric heterostruc...

Clinical Trials [1480 Associated Clinical Trials listed on BioPortfolio]

Thyroid Surgery With the New Harmonic Scalpel: a Prospective Randomized Study

The objective of this study is to compare the results of total thyroidectomy using the new harmonic scalpel device (FOCUS) to that with the previously available harmonic scalpel device (HA...

Single Centre Study to Compare Harmonic Scalpel to Conventional Diathermy in Free Tissue Transfer Breast Reconstruction

The purpose of this single centre study is to evaluate whether the use of Harmonic Synergy Dissecting Hook (Harmonic Scalpel) in breast reconstruction surgery is superior to conventional d...

Use of Harmonic Scalpel to Decrease Lymphatic and Chest Tube Drainage After Lymph Node Dissection With Lobectomy.

In an effort to elucidate whether the Harmonic Scalpel will improve sealing lymphatics and decrease lymphatic drainage thereby decreasing the length of time that chest tubes are required a...

Clinical Usefulness of Optical Skin Biopsy

Traditional biopsy requires the removal, fixation, and staining of tissues from the human body. Its procedure is invasive and painful. Non-invasive in vivo optical biopsy is thus required,...

Validation of 3 Dimensional Laparoscopic System in Disral Pancreatectomy and Splenectomy

Traditionally, laparoscopy has been based on 2-dimensional (2D) imaging, which has represented a considerable challenge for those approaching this technique. Thus, 3-dimensional (3D) visua...

Medical and Biotech [MESH] Definitions

Echocardiography amplified by the addition of depth to the conventional two-dimensional ECHOCARDIOGRAPHY visualizing only the length and width of the heart. Three-dimensional ultrasound imaging was first described in 1961 but its application to echocardiography did not take place until 1974. (Mayo Clin Proc 1993;68:221-40)

The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.

Three-dimensional computed tomographic imaging with the added dimension of time, to follow motion during imaging.

Methods of comparing two or more samples on the same two-dimensional gel electrophoresis gel.

Dynamic three-dimensional echocardiography using the added dimension of time to impart the cinematic perception of motion. (Mayo Clin Proc 1993;68:221-40)

Quick Search
Advertisement
 


DeepDyve research library

Searches Linking to this Article