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13 Jul 01:57

Monolayer 2D ZrTe2 transition metal dichalcogenide as nanoscatter for random laser action

Nanoscale, 2020, 12,15706-15710
DOI: 10.1039/D0NR03152F, Paper
Pablo I. R. Pincheira, Manoel L. da Silva Neto, Melissa Maldonado, Cid B. de Araújo, Ali M. Jawaid, Robert Busch, Allyson J. Ritter, Richard A. Vaia, Anderson S. L. Gomes
We demonstrate random laser emission from Rhodamine 6G with ZrTe2 transition metal dichalcogenide as nanoscatters. The 2D semimetal ZrTe2 was employed for the first time as the scatter medium to provide feedback in an organic gain medium random laser.
The content of this RSS Feed (c) The Royal Society of Chemistry
13 Jul 01:49

Publisher Correction: 2D phase transitions: Freezing and melting skyrmions in 2D

by Mathias Kläui

Nature Nanotechnology, Published online: 02 July 2020; doi:10.1038/s41565-020-0745-y

Publisher Correction: 2D phase transitions: Freezing and melting skyrmions in 2D
13 Jul 01:42

Welcome anyons! Physicists find best evidence yet for long-sought 2D structures

by Davide Castelvecchi

Nature, Published online: 03 July 2020; doi:10.1038/d41586-020-01988-0

The ‘quasiparticles’ defy the categories of ordinary particles and herald a potential way to build quantum computers.
02 Jul 13:36

Prediction of room-temperature ferromagnetism in a two-dimensional direct band gap semiconductor

Nanoscale, 2020, 12,15670-15676
DOI: 10.1039/D0NR03340E, Paper
Shanbao Chen, Fang Wu, Qiongyu Li, Huasheng Sun, Junfei Ding, Chengxi Huang, Erjun Kan
Two-dimensional (2D) ferromagnetic (FM) semiconductors with a direct electric band gap have recently drawn much attention due to their promising potential for spintronic and magneto-optical applications.
The content of this RSS Feed (c) The Royal Society of Chemistry
02 Jul 13:36

Shape-control growth of 2D-In2Se3 with out-of-plane ferroelectricity by chemical vapor deposition

Nanoscale, 2020, 12,20189-20201
DOI: 10.1039/C9NR10207H, Paper
Rashad Rashid, Francis Chi-Chung Ling, Shuang-Peng Wang, Ke Xiao, Xiaodong Cui, T. H. Chan, H. C. Ong, Waqar Azeem, Muhammad Younas
Influences of growth parameters on the shape and ferroelectric properties of a 2D-In2Se3 layered structure grown by CVD were systematically studied.
The content of this RSS Feed (c) The Royal Society of Chemistry
02 Jul 13:35

Sub-5 nm monolayer germanium selenide (GeSe) MOSFETs: towards a high performance and stable device

Nanoscale, 2020, 12,15443-15452
DOI: 10.1039/D0NR02170A, Paper
Ying Guo, Feng Pan, Gaoyang Zhao, Yajie Ren, Binbin Yao, Hong Li, Jing Lu
ML GeSe field-effect transistors have an excellent device performance, even at the 1 nm gate-length. The on-state current of the devices can fulfill the requirements of the International Technology Roadmap for Semiconductors (2013 version).
The content of this RSS Feed (c) The Royal Society of Chemistry
02 Jul 13:35

Reconfigurable logic and neuromorphic circuits based on electrically tunable two-dimensional homojunctions

by Chen Pan

Nature Electronics, Published online: 29 June 2020; doi:10.1038/s41928-020-0433-9

A homojunction device made from two-dimensional tungsten diselenide can be used to create circuits that exhibit multifunctional logic and neuromorphic capabilities with simpler designs than conventional silicon-based systems.
02 Jul 13:34

Freezing and melting skyrmions in 2D

by Mathias Kläui

Nature Nanotechnology, Published online: 24 June 2020; doi:10.1038/s41565-020-0726-1

Lattices of magnetic whirls are a promising model system to study phases and phase transitions in two dimensions.
02 Jul 13:33

Quantum Hall effect of Weyl fermions in n-type semiconducting tellurene

by Gang Qiu

Nature Nanotechnology, Published online: 29 June 2020; doi:10.1038/s41565-020-0715-4

The accidental band-crossing origin of Weyl nodes paired with the absence of sizeable band gaps hampers the exploitation of low-energy relativistic quasiparticles in Weyl semimetals. In a gate-tunable high-quality tellurene film, quantum Hall measurements unveil a topologically non-trivial π Berry phase caused by unconventional Weyl nodes in these tellurium two-dimensional sheets.
02 Jul 13:33

High oscillator strength interlayer excitons in two-dimensional heterostructures for mid-infrared photodetection

by Steven Lukman

Nature Nanotechnology, Published online: 29 June 2020; doi:10.1038/s41565-020-0717-2

Formation of interlayer excitons with high oscillator strength in a WS2/HfS2 heterostructure enables the realization of high-responsivity room-temperature mid- and long-wavelength infrared photodetectors.
02 Jul 13:33

Exchange magnetostriction in two-dimensional antiferromagnets

by Shengwei Jiang

Nature Materials, Published online: 29 June 2020; doi:10.1038/s41563-020-0712-x

A coupling of mechanical vibrations and magnetism and strain-tuning of the exchange interactions, is demonstrated for few-layer CrI3.
02 Jul 13:32

A snapshot shows off super-material only two atoms thick

Nature, Published online: 29 June 2020; doi:10.1038/d41586-020-01938-w

High-powered microscope allows scientists to visualize an exotic structure called a superlattice.
02 Jul 13:31

Author Correction: Tunable correlated states and spin-polarized phases in twisted bilayer–bilayer graphene

by Yuan Cao

Nature, Published online: 02 July 2020; doi:10.1038/s41586-020-2393-7

Author Correction: Tunable correlated states and spin-polarized phases in twisted bilayer–bilayer graphene
28 Jun 12:35

Controlling the magnetic anisotropy in Cr2Ge2Te6 by electrostatic gating

by Ivan A. Verzhbitskiy

Nature Electronics, Published online: 15 June 2020; doi:10.1038/s41928-020-0427-7

Electrostatic gating can be used to modulate the magnetic anisotropy of chromium germanium telluride, a layered ferromagnetic semiconductor, and increase its Curie temperature to 200 K.
28 Jun 12:34

Emergent magnetic texture in driven twisted bilayer graphene

Nanoscale, 2020, 12,15383-15392
DOI: 10.1039/D0NR02786C, Paper
Dario A. Bahamon, G. Gómez-Santos, T. Stauber
A superlattice of magnetic moments appears for low twist angles in twisted bilayer graphene under asymmetric driving.
The content of this RSS Feed (c) The Royal Society of Chemistry
28 Jun 12:32

X (metal: Al, Cu, Sn, Ti)-functionalized tunable 2D-MoS2 nanostructure assembled biosensor arrays for qualitative and quantitative analysis of vital neurological drugs

Nanoscale, 2020, 12,15336-15347
DOI: 10.1039/D0NR03427D, Paper
Sushmitha Veeralingam, Sushmee Badhulika
X-Functionalized tunable MoS2 nanostructure assembled biosensor arrays for qualitative and quantitative analysis.
The content of this RSS Feed (c) The Royal Society of Chemistry
28 Jun 12:31

A direct Z-scheme PtS2/arsenene van der Waals heterostructure with high photocatalytic water splitting efficiency

Nanoscale, 2020, 12,17281-17289
DOI: 10.1039/D0NR02286A, Paper
Kai Ren, Wencheng Tang, Minglei Sun, Yongqing Cai, Yuan Cheng, Gang Zhang
To overcome current serious energy and environmental issues, photocatalytic water splitting holds great promise because it requires only solar energy as an energy input to produce hydrogen.
The content of this RSS Feed (c) The Royal Society of Chemistry
28 Jun 12:30

Interfacial Rashba-Effect-Induced Anisotropy in Nonmagnetic-Material–Ferrimagnetic-Insulator Bilayers

by Aidan J. Lee, Adam S. Ahmed, Brendan A. McCullian, Side Guo, Menglin Zhu, Sisheng Yu, Patrick M. Woodward, Jinwoo Hwang, P. Chris Hammel, and Fengyuan Yang

Author(s): Aidan J. Lee, Adam S. Ahmed, Brendan A. McCullian, Side Guo, Menglin Zhu, Sisheng Yu, Patrick M. Woodward, Jinwoo Hwang, P. Chris Hammel, and Fengyuan Yang

A systematic study of a ferrimagnetic insulator in a bilayer structure with a succession of nonmagnetic metals opens a possibility of tuning magnetic anisotropy, and also highlights a clear distinction between transition metals and non-transition metals.


[Phys. Rev. Lett. 124, 257202] Published Tue Jun 23, 2020

28 Jun 12:30

Exciton-Scattering-Induced Dephasing in Two-Dimensional Semiconductors

by Florian Katsch, Malte Selig, and Andreas Knorr

Author(s): Florian Katsch, Malte Selig, and Andreas Knorr

Enhanced Coulomb interactions in monolayer transition metal dichalcogenides cause tightly bound electron-hole pairs (excitons) that dominate their linear and nonlinear optical response. The latter includes bleaching, energy renormalizations, and higher-order Coulomb correlation effects like biexcito...


[Phys. Rev. Lett. 124, 257402] Published Wed Jun 24, 2020

28 Jun 12:27

Strain-engineered high-responsivity MoTe2 photodetector for silicon photonic integrated circuits

by R. Maiti

Nature Photonics, Published online: 22 June 2020; doi:10.1038/s41566-020-0647-4

A strain-induced absorption-enhanced MoTe2-based silicon photonic microring-integrated photodetector is demonstrated, featuring high responsivity of ~0.5 A W–1 at 1,550 nm, with a low noise-equivalent power of 90 pW Hz–0.5.
28 Jun 12:26

Visualization of moiré superlattices

by Leo J. McGilly

Nature Nanotechnology, Published online: 22 June 2020; doi:10.1038/s41565-020-0708-3

An electromechanical response to an out-of-plane electric field in van der Waals heterostructures enables direct visualization of moiré superlattices using piezoresponse force microscopy.
28 Jun 12:25

Gate-tunable spin waves in antiferromagnetic atomic bilayers

by Xiao-Xiao Zhang

Nature Materials, Published online: 22 June 2020; doi:10.1038/s41563-020-0713-9

Gating dependent laser induced spin dynamics in an antiferromagnetic bilayer are observed and explained, with implications for future spintronic applications.
28 Jun 12:25

Correlated electronic phases in twisted bilayer transition metal dichalcogenides

by Lei Wang

Nature Materials, Published online: 22 June 2020; doi:10.1038/s41563-020-0708-6

Tunable correlated states are observed in twist bilayer WSe2 over a range of twist angles, with signatures of superconductivity for a twist of 5.1°.
22 Jun 03:31

Modulation of field-like spin orbit torque in heavy metal/ferromagnet heterostructures

Nanoscale, 2020, 12,15246-15251
DOI: 10.1039/D0NR02762F, Paper
Zilu Wang, Houyi Cheng, Kewen Shi, Yang Liu, Junfeng Qiao, Daoqian Zhu, Wenlong Cai, Xueying Zhang, Sylvain Eimer, Dapeng Zhu, Jie Zhang, Albert Fert, Weisheng Zhao
We experimentally modulate the field-like spin orbit torque in heavy metal/ferromagnet heterostructures by control of interfacial spin transmission.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Jun 03:31

High-temperature and multichannel quantum anomalous Hall effect in pristine and alkali–metal-doped CrBr3 monolayers

Nanoscale, 2020, 12,13964-13972
DOI: 10.1039/D0NR02829K, Paper
Huisheng Zhang, Wenjia Yang, Yaohui Ning, Xiaohong Xu
We provide an experimentally achievable guide for realizing the high-temperature and multichannel QAHE in prinstine and Na-doped CrBr3 monolayer.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Jun 03:31

A new family of two-dimensional ferroelastic semiconductors with negative Poisson's ratios

Nanoscale, 2020, 12,14150-14159
DOI: 10.1039/C9NR10114D, Paper
Jun-Hui Yuan, Ge-Qi Mao, Kan-Hao Xue, Jiafu Wang, Xiang-Shui Miao
Two-dimensional (2D) materials with both ferroelasticity and negative Poisson's ratios have attracted intensive interest, but it is very rare to have both ferroelasticity and negative Poisson's ratios in a single material.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Jun 03:31

Intrinsic limit of contact resistance in the lateral heterostructure of metallic and semiconducting PtSe2

Nanoscale, 2020, 12,14636-14641
DOI: 10.1039/D0NR03001E, Paper
Eunyeong Yang, Jae Eun Seo, Dongwook Seo, Jiwon Chang
Low contact resistance can be achieved in the metallic and semiconducting PtSe2 lateral heterostructure through the thickness-dependent phase transition in PtSe2.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Jun 03:30

Multiferroic decorated Fe2O3 monolayer predicted from first principles

Nanoscale, 2020, 12,14847-14852
DOI: 10.1039/D0NR03391J, Paper
Jing Shang, Chun Li, Xiao Tang, Aijun Du, Ting Liao, Yuantong Gu, Yandong Ma, Liangzhi Kou, Changfeng Chen
Insertion of Li can covert Fe2O3 layer as a multiferroics due to the Jahn–Teller distortion and d orbital splitting, which is promising for advanced device applications.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Jun 03:29

Carrier polarity modulation of molybdenum ditelluride (MoTe2) for phototransistor and switching photodiode applications

Nanoscale, 2020, 12,15687-15696
DOI: 10.1039/D0NR03904G, Paper
Sikandar Aftab, Samiya, Rabia, Saqlain Yousuf, Muhammad Usman Khan, Rafia Khawar, Ayesha Younus, Mumtaz Manzoor, Muhammad Waqas Iqbal, Muhammad Zahir Iqbal
p–n Diodes showed a sound self-biased photovoltaic behavior upon light illumination and also achieved VOC switching behavior at the p–n diode state by switching on and off the light.
The content of this RSS Feed (c) The Royal Society of Chemistry
13 Jun 05:11

Cascade of electronic transitions in magic-angle twisted bilayer graphene

by Dillon Wong

Nature, Published online: 11 June 2020; doi:10.1038/s41586-020-2339-0

Electron–electron interactions in magic-angle twisted bilayer graphene can split usually degenerate electronic bands, giving rise to a cascade of electronic transitions revealed by spectroscopy.