scholarly journals Magnetoresistance Effect in NiFe/BP/NiFe Vertical Spin Valve Devices

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Leilei Xu ◽  
Jiafeng Feng ◽  
Kangkang Zhao ◽  
Weiming Lv ◽  
Xiufeng Han ◽  
...  
Keyword(s):  
Thin Film ◽  
Room Temperature ◽  
Transition Metal Dichalcogenides ◽  
Spin Valve ◽  
Layered Materials ◽  
Two Dimensional ◽  
Magnetoresistance Effect ◽  
2D Layered Materials ◽  
Metal Dichalcogenides ◽  
Valve Effect

Two-dimensional (2D) layered materials such as graphene and transition metal dichalcogenides are emerging candidates for spintronic applications. Here, we report magnetoresistance (MR) properties of a black phosphorus (BP) spin valve devices consisting of thin BP flakes contacted by NiFe ferromagnetic (FM) electrodes. The spin valve effect has been observed from room temperature to 4 K, with MR magnitudes of 0.57% at 4 K and 0.23% at 300 K. In addition, the spin valve resistance is found to decrease monotonically as temperature is decreased, indicating that the BP thin film works as a conductive interlayer between the NiFe electrodes.

scholarly journals Two-dimensional inorganic analogues of graphene: transition metal dichalcogenides

2016 ◽  
Vol 374 (2076) ◽  
pp. 20150318 ◽  
Author(s):  
Manoj K. Jana ◽  
C. N. R. Rao
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Single Layer ◽  
Layered Materials ◽  
Two Dimensional ◽  
2D Layered Materials ◽  
Wide Range ◽  
Buckminster Fullerene ◽  
Metal Dichalcogenides ◽  
Layered Transition Metal

The discovery of graphene marks a major event in the physics and chemistry of materials. The amazing properties of this two-dimensional (2D) material have prompted research on other 2D layered materials, of which layered transition metal dichalcogenides (TMDCs) are important members. Single-layer and few-layer TMDCs have been synthesized and characterized. They possess a wide range of properties many of which have not been known hitherto. A typical example of such materials is MoS 2 . In this article, we briefly present various aspects of layered analogues of graphene as exemplified by TMDCs. The discussion includes not only synthesis and characterization, but also various properties and phenomena exhibited by the TMDCs. This article is part of the themed issue ‘Fullerenes: past, present and future, celebrating the 30th anniversary of Buckminster Fullerene’.

Two-Dimensional Layered Materials-Based Spintronics

SPIN ◽  
2015 ◽  
Vol 05 (04) ◽  
pp. 1540011 ◽  
Author(s):  
Guohui Su ◽  
Xing Wu ◽  
Wenqi Tong ◽  
Chungang Duan
Keyword(s):  
Transition Metal ◽  
Degrees Of Freedom ◽  
Graphene Nanoribbons ◽  
Transition Metal Dichalcogenides ◽  
Layered Materials ◽  
Future Research ◽  
Two Dimensional ◽  
2D Layered Materials ◽  
Recent Emergence ◽  
Metal Dichalcogenides

The recent emergence of two-dimensional (2D) layered materials — graphene and transition metal dichalcogenides — opens a new avenue for exploring the internal quantum degrees of freedom of electrons and their potential for new electronics. Here, we provide a brief review of experimental achievements concerning electrical spin injection, spin transport, graphene nanoribbons spintronics and transition metal dichalcogenides spin and pseudospins. Future research in 2D layered materials spintronics will need to address the development of applications such as spin transistors and spin logic devices, as well as exotic physical properties including pseudospins-valley phenomena in graphene and other 2D materials.

scholarly journals Optoelectronic Nanodevices

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 520 ◽  
Author(s):  
Minas M. Stylianakis
Keyword(s):  
Metal Oxides ◽  
Scientific Community ◽  
Transition Metal Dichalcogenides ◽  
Layered Materials ◽  
Metal Nanostructures ◽  
Two Dimensional ◽  
2D Layered Materials ◽  
Graphene Derivatives ◽  
Metal Dichalcogenides ◽  
Optoelectronic Nanodevices

Over the last decade, novel materials such as graphene derivatives, transition metal dichalcogenides (TMDs), other two-dimensional (2D) layered materials, perovskites, as well as metal oxides and other metal nanostructures have centralized the interest of the scientific community [...]

scholarly journals Mechanochemical preparation of piezoelectric nanomaterials: BN, MoS2 and WS2 2D materials and their glycine-cocrystals

2020 ◽  
Vol 5 (2) ◽  
pp. 331-335 ◽  
Author(s):  
Viviana Jehová González ◽  
Antonio M. Rodríguez ◽  
Ismael Payo ◽  
Ester Vázquez
Keyword(s):  
Transition Metal ◽  
Boron Nitride ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Layered Materials ◽  
Molybdenum Disulphide ◽  
2D Layered Materials ◽  
Metal Dichalcogenides

Different 2D-layered materials of transition metal dichalcogenides (TMDCs) such as boron nitride (BN) or molybdenum disulphide (MoS2) have been theorised to have piezoelectric behaviour.

An optical spectroscopic study on two-dimensional group-VI transition metal dichalcogenides

2015 ◽  
Vol 44 (9) ◽  
pp. 2629-2642 ◽  
Author(s):  
Hualing Zeng ◽  
Xiaodong Cui
Keyword(s):  
Transition Metal ◽  
Spectroscopic Study ◽  
Electronic Devices ◽  
Transition Metal Dichalcogenides ◽  
Layered Materials ◽  
Two Dimensional ◽  
Group Vi ◽  
Intensive Research ◽  
Dimensional Group ◽  
Metal Dichalcogenides

The ultimate goal of making atomically thin electronic devices stimulates intensive research on layered materials, in particular the group-VI transition metal dichalcogenides (TMDs).

Solution-based Production of 2D-layered Materials

MRS Advances ◽  
2016 ◽  
Vol 1 (32) ◽  
pp. 2267-2272
Author(s):  
Anupama B. Kaul
Keyword(s):  
Printed Electronics ◽  
Transition Metal Dichalcogenides ◽  
Layered Materials ◽  
Layered Material ◽  
2D Layered Materials ◽  
Wide Range ◽  
Ink Jet ◽  
Metal Dichalcogenides ◽  
2D Nanomaterials ◽  
Rich Spectrum

ABSTRACTTwo dimensional (2D) nanomaterials such as graphene and transition-metal dichalcogenides (TMDCs) have attracted tremendous attention over recent years due to their unique properties and potential for numerous applications. Given the wide range of compositions of 2D-layered materials that have emerged in recent years, it is not surprising that they offer a rich spectrum of properties, ranging from metallic, insulating, superconducting to semiconducting. Here we report on the solution-based production of 2D layered material flakes, in particular graphene and MoS2 where the materials are chemically exfoliated in organic solvents which can then be ink jet printed using a commercially available material printer, for printed electronics applications.

The electronic structure calculations of two-dimensional transition-metal dichalcogenides in the presence of external electric and magnetic fields

2015 ◽  
Vol 44 (9) ◽  
pp. 2603-2614 ◽  
Author(s):  
Agnieszka Kuc ◽  
Thomas Heine
Keyword(s):  
Electronic Structure ◽  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Electronic Structure Calculations ◽  
Layered Materials ◽  
Two Dimensional ◽  
Two Dimensional Materials ◽  
Electric And Magnetic Fields ◽  
Metal Dichalcogenides ◽  
Structure Calculations

Transition-metal dichalcogenides TX2 (T = W, Mo; X = S, Se, Te) are layered materials that are available in ultrathin forms such as mono-, bi- and multilayers, which are commonly known as two-dimensional materials.

Enhancing excitons by oleic acid treatment in WS2, MoS2, and WS2/MoS2 heterostructure

2022 ◽  
Author(s):  
Yishu Wang ◽  
Xiaokun Zhai ◽  
Liefeng Feng ◽  
Tingge Gao
Keyword(s):  
Oleic Acid ◽  
Acid Treatment ◽  
Room Temperature ◽  
Transition Metal Dichalcogenides ◽  
Interlayer Coupling ◽  
Fold Increase ◽  
Two Dimensional ◽  
Peak Intensity ◽  
Energy Peak ◽  
Metal Dichalcogenides

Abstract The neutral and interlayer exciton originates from intralayer and interlayer coupling, respectively. Unlike neutral exciton, the interlayer excitons at room temperature are hard to observe and manipulate due to instability. In this work, we show the photoluminescence of WS$_2$ and MoS$_2$ neutral exciton can be improved by oleic acid passivation, allowing trion peaks to be observed at room temperature. More importantly, a 3-fold increase in peak intensity of interlayer excitons is achieved, and the energy peak is blue-shifted 107 meV. Our work paves the way to investigate excitons in two-dimensional transition metal dichalcogenides monolayers and heterostructures at room temperature.

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