The next edition of the NT conferences series will be held in Arcachon, France, June 4-9, 2003.

NT’23 conference
(23rd International Conference on the Science and
Application of Nanotubes and Low-Dimensional Materials)
will be held at the Conference Center in the seaside town of Arcachon,
near Bordeaux, France, June 4-9, 2023.

Important Dates

• December 15, 2022 Registration Open
• January 10, 2023 Submission Open
• February 26, 2023 Abstract submission deadline
• March 29, 2023 Notification of acceptance
• April 11, 2023 Early bird registration deadline
• May 7, 2023 Late registration deadline

Note that due to physical space limitations, the total number of attendees cannot extend over 350 people. Registration will be granted upon first come first serve policy.

Keynotes speakers (confirmed):

• Pr. Young Hee Lee, Sungkyunkwan University, South Corea
• Pr. Katalin Kamarás, Wigner Research center for Physics, Austria
• Pr. Richard Martel, University of Montreal, Canada
• Pr. Matteo Pasquali, Rice University, USA
• Pr. Ming Zheng, NIST, USA

Click here for more information

The annual meeting of the GDR will take place from 8 – 12 May 2023 in Porquerolles (Mediterranean sear shore)

All information is available here: https://howdi2023.sciencesconf.org/

Important dates :

03/03/2023 - Abstract Submission Deadline
03/04/2023 - Inscription and payment deadline

Marcello Lopes (Berlin, Germany)
"Epitaxial Growth of 2D Materials and Heterostructures"
Thu 2 Feb. 2023 (11h)

Next virtual meeting the GDR HOWDI will be held online
Thursday, February 2nd, 2023 at 11h

Marcelo Lopes (Paul-Drude-Institut für Festkörperelektronik, Berlin, Germany)

Epitaxial Growth of 2D Materials and Heterostructures

Abstract :

Van der Waals (vdW) heterostructures combining different 2D materials
have a great prospect for the realization of atomically thin devices
with tailored properties. To achieve a high density, bottom-up
integration, the synthesis of such heterostructures
via vdW epitaxy is a promising alternative to layer transfer, which is
problematic in terms of scaling and reproducibility. Nevertheless, due
to the weak bonding between 2D crystals, vdW epitaxy is sensitive to
various surface defects, usually leading to uncontrolled nucleation and
thus non-uniform growth of polycrystalline material. In this talk, I
will present results on molecular beam epitaxy (MBE) of hexagonal boron
nitride (h-BN) on graphene/SiC(0001). Specifically, I will discuss how
defect engineering in graphene can be employed to exert the control over
nucleation and thus to realize selective area growth of h-BN. In
addition, I will show our recent studies on ferromagnetic vdW
heterostructures with perpendicular magnetic anisotropy and high
transition temperatures, which were realized via MBE growth of the novel
2D ferromagnetic metal Fe5-xGeTe2 (FGT, with 0 ≤ x ≤ 2) on graphene as
well as h-BN templates.

Connexion info :
Time: Feb 2, 2023 11:00 AM Paris

Join Zoom Meeting
https://univ-grenoble-alpes-fr.zoom.us/j/95627215262?pwd=Y0dZMTh6OXljQVFXUzE0Z2xEcnJTQT09

Meeting ID: 956 2721 5262
Passcode: 969980

"Probing Magnetism in van der Waals Crystals with Magnetotransport "
Tuesday Oct. 4, 11h

Next virtual seminar of the GDR HOWDI

Nicolas Ubrig : "Probing Magnetism in van der Waals Crystals with Magnetotransport "

Time: Oct 4, 2022 11:00 AM Paris

Join Zoom Meeting
https://univ-grenoble-alpes-fr.zoom.us/j/93155856365?pwd=aXUxeWtpZndIYkkrQzkxellYNldwZz09

Meeting ID: 931 5585 6365
Passcode: 197463
One tap mobile
+33170372246,,93155856365# France
+33170379729,,93155856365# France

Abstract :
Probing magnetism in atomically thin van der Waals crystals is challenging because most experimental methods commonly employed to study bulk compounds are not sufficiently sensitive to detect any magnetic signal from such a small amount of material. Here, we will discuss how magnetotransport experiments can circumvent this issue in rather simple Ising type ferromagnetic and antiferromagnetic insulators. Moreover, the complementarity of magnetotransport and magneto-optical probes allows determining the phase diagram of more complex magnetic structures of atomically thin crystals. We will conclude the talk by discussing interesting newly discovered atomically thin materials in which we probe the coupling between magnetic and electronic properties.

Strasbourg, 23-24 Jan. 2023

On January 23rd and 24th 2023, a Lavoisier discussion on 2D magnetic materials will take place in Strasbourg.

The recent demonstration of an intrinsic magnetic order in atomically-thin van der Waals materials opens a vast playground to understand and control magnetism at the nanoscale. This nascent class of materials offers a broad variety of magnetic orders, from textbook phenomenology to more exotic spin states. 2D magnetic materials can be embedded in van der Waals heterostructures, wherein novel spintronic and nano-photonic phenomena emerge, fostering breakthroughs in fundamental sciences as well as engineering of future ultrathin devices.
This workshop aims at federating the French community working on this burgeoning field of research, on a short format conducive to discussions. The program will feature three tutorial talks on specific topics given by experts as well as contributed oral and poster presentations of recent results.

Lavoisier discussions are prospective workshops on an emergent research area covered by the national research group (GDR) and the international coordination network (IRN) related to low-dimensional van der Waals heterostructures HOWDI. The event is organized by IPCMS, a research institute co-hosted by CNRS & Université de Strasbourg.

Abstract submission and registration will open in October 2022

Quantum emitters in 2D
CRHEA, Côte d’Azur, 9-11 Jan. 2023

Save the date.
More information here.

Engineering intrinsic π-electron magnetism in atomically-precise carbon nanostructures
11 mars 2022, 11h00.

Next virtual seminar of the GDR HOWDI :

Roman FASEL - Engineering intrinsic π-electron magnetism in atomically-precise carbon nanostructures
Please check the attached abstract.

Connection information :

Sujet : GDR HOWDI SEMINAR -
Heure : 8 avril 2022 11:00 AM Paris

https://zoom.us/j/99872391294?pwd=ZlhtdXBNVzRRaFlMWEs4ZW9VbFE2QT09

ID de réunion : 998 7239 1294

Code secret : b0tbYx

« 2D materials for optoelectronics and spin/valley-tronics » : a mini-colloque at « Journées de la Matière Condensée » (JMC2022) to be held in Lyon on Aug. 22-26, 2022.

A mini-colloquium on « 2D materials for optoelectronics and spin/valley-tronics » will be held at the « Journées de la Matière Condensée » (JMC2022) that will take place in Lyon on Aug. 22-26, 2022 (http://jmc2022.univ-lyon1.fr).

Please check the details in the attached file :

A Summer School on Raman and Photoluminescence spectroscopies on Low Dimensional Systems will be organized in Montpellier from the 04 to 08 of July 2022.
Registration is now open!

A Summer School on Low Dimensional Systems will be organized in Montpellier from the 04 to 08 of July 2022. This school aims to provide the theoretical and methodological basis of Raman and Photoluminescence spectroscopies on carbon nanotubes, graphene, TMD... Oral presentations will address fundamental lectures on the physical processes, more applied lessons will display examples illustrated by practicals.

The specificity of this training is to combine theoretical courses and practicals. It will benefit from the knowledge of several experts in the field. This session will be able to welcome a maximum of 25 people (researchers, engineers and doctoral students...). This school is for beginners in this field as well as those who want to update their knowledge. It will be held in english.

https://coulomb.umontpellier.fr/Summer-School-on-Low-Dimensional-Systems-du-4-au-8-juillet-2022

Information: laurent.alvarez@umontpellier.fr

Quantum spins and hybridization in artificially-constructed chains of magnetic adatoms on superconducting 2H-NbSe 2
Tuesday, 8 Feb 2022, 11h

Next virtual seminar of the GDR HOWDI is scheduled on Tuesday 8 February 2022 at 11h.
Katharina FRANKE (Freie Universitaet, Berlin)
"Quantum spins and hybridization in artificially-constructed chains of magnetic adatoms on superconducting 2H-NbSe_2”

Abstract :

Magnetic adatom chains on superconducting substrates are promising platforms for topological superconductivity and Majorana zero modes. Signatures of these have been found in densely packed chains with direct exchange interaction among the adatoms. In contrast, the dilute limit of chains, where the atoms are sufficiently far spaced that direct hybridization of their d orbitals is negligible, but close enough for substrate-mediated interactions, has not been investigated previously. Engineering dilute adatom chains with substantial substrate-mediated interactions requires samples sustaining long-range Yu-Shiba-Rusinov (YSR) states. While these decay
quickly with 1/ 𝑘 𝑟 (with 𝑘 being the Fermi wave vector and 𝑟 the distance to the impurity) on three-dimensional superconductors, the decay of YSR states on two-dimensional superconductors is much slower, scaling with 1/√ 𝑘 𝑟 [1].
Here, we explore the well known quasi-two-dimensional superconductor 2H-NbSe 2 as a substrate for magnetic adatom structures. Individual Fe atoms induce Yu-Shiba-Rusinov states, which spatially extend over several nanometers with their energy and symmetry influenced by the crystal field and by the co-existing charge-density wave (CDW) [2]. When two Fe atoms are placed on equivalent adsorption sites at a distance of 1 nm, the YSR states are shifted in energy and split. While the splitting indicates hybridization of the YSR states, the strong shift can only be explained by RKKY coupling of quantum spins [3]. We deliberately increase the chain length by adding individual Fe atoms with the STM tip, up to a length of 51 atoms. In each step we track the evolution of the YSR states. We find signatures of YSR band formation consistent with ferromagnetic coupling of quantum spins [4].

[1] G. C. Ménard, et al., Nat. Phys. 11, 1013 (2015).
[2] E. Liebhaber et al., Nano Lett. 20, 339 (2020).
[3] E. Liebhaber, et al., arxiv2107.06361 (2021).
[4] J. F. Steiner, et al., arxiv2107.00031 (2021).

Connection information:

Sujet : GDR HOWDI SEMINAR - Katharina FRANKE - Quantum spins and hybridization in artificially-constructed chains of magnetic adatoms on superconducting 2H-NbSe2

8 févr. 2022 11:00 AM Paris

https://zoom.us/j/95506784928?pwd=aXV3MUdCUWJtdkZtRFJrS1IzaDFNZz09

meeting ID : 955 0678 4928

Code secret : uJ8QWP