To: 15/03/2023 14:00
In this talk I will first recall briefly the general properties of 2D excitons in Transition Metal Dichalcogenides (TMD) monolayers: giant binding energy, oscillator strength, exchange interactions, spin/valley locking ...1.
Encapsulation of TMD monolayers in hexagonal boron nitride (hBN) yields narrow optical transitions approaching the homogeneous exciton linewidth2,3. We have demonstrated that the exciton radiative rate in these van der Waals heterostructures can be tailored by a simple change of the hBN encapsulation layer thickness as a consequence of the Purcell effect 4.
We also measured the exciton fine structure by magneto-photoluminescence spectroscopy in magnetic fields up to 30 T 5,6. I will show that the bright-dark exciton splitting can be tuned by a few meV, as a result of a significant Lamb shift of the optically active exciton which arises from emission and absorption of virtual photons triggered by the vacuum fluctuations of the electromagnetic field7 .
Finally I will present recent experimental results on spin/valley pumping of resident electrons in WSe2 and WS2 monolayers8. Using a spatially-resolved optical pump-probe experiment, we measure the lateral transport of spin/valley polarized electrons over very long distances (tens of micrometers)9. These results highlight the key role played by the spin-valley locking effect in TMD monolayers on the pumping efficiency and the polarized electron transport.
1 G. Wang et al, Rev. Mod. Phys. 90, 021001 (2018)
2 F. Cadiz et al, Phys. Rev. X 7, 021026 (2017)
3 G. Wang et al, Phys. Rev. Lett. 119, 047401 (2017)
4 H. Fang et al, Phys. Rev. Lett. 123, 067401 (2019)
5 C. Robert et al, Phys. Rev. Lett . 126, 067403 (2021)
6 C. Robert et al, Nature Com. 11, 4037 (2020)
7 L. Ren et al, submitted (2023)
8 C. Robert et al, Nature Com. 12, 5455 (2021)
9 C. Robert et al, Phys. Rev. Lett. 129, 027402 (2022)
Position Description
Training activities on 2D materials science
For the full announcement, follow the link "Related Documents"
Required Qualifications
- Master Degree in Physics, Chemistry or Materials science
- Proved Experience in the spectroscopy of 2D Materials
- Proved Experience in the mechanical exfoliation of 2D materials
- Publications related to the position topic
Application Procedure
Interested candidates who meet the aforementioned requirements are kindly asked to submit their applications with cc to the Scientific Responsible, Dr Emmanuel Stratakis (stratak@iesl.forth.gr).
In order to be considered, the application must include:
- Application Form (Form Greek or Form English to the left)
- Detailed curriculum vitae (CV) of the candidate
- Scanned Copies of academic titles
- Certificate for enrollment in a PhD program
Appointment Duration
6 monthsPosition Description
Synthesis and conjugation of Upconversion-Perovskite Nanoparticles
For the full announcement, follow the link "Related Documents"
Required Qualifications
- PhD Degree in Physics, Chemistry or Materials science
- Proved Experience in the synthesis of Upconversion Nanoparticles
- Proved Experience in the synthesis of Perovskite Nanoparticles
- Publications related to the position topic
Application Procedure
Interested candidates who meet the aforementioned requirements are kindly asked to submit their applications with cc to the Scientific Responsible, Dr Emmanuel Stratakis (stratak@iesl.forth.gr).
In order to be considered, the application must include:
- Application Form (Form Greek or Form English to the left)
- Detailed curriculum vitae (CV) of the candidate
- Scanned Copies of academic titles
Appointment Duration
6 monthsPosition Description
Εμπλουτισμός ημιαγώγιμων Νανοσωματιδίων
Για το πλήρες κείμενο της πρόσκλησης ακολουθήστε τον σύνδεσμο 'Related Documents'
Required Qualifications
- Μεταπτυχιακό δίπλωμα στη Φυσική, τη Χημεία ή την Επιστήμη των Υλικών
- Εμπειρία στη σύνθεση Νανοσωματιδίων
- Εμπειρία στον εμπλουτισμό Νανοσωματιδίων
- Δημοσιεύσεις σχετικές με τη σύνθεση και χαρακτηρισμό Νανοσωματιδίων
Application Procedure
Στο φάκελο υποβολής της πρότασης θα πρέπει να εμπεριέχονται τα ακόλουθα:
- Αίτηση (Form Greek στην αριστερή στήλη) με αναφορά στον κωδικό της θέσης και στο όνομα του προγράμματος
- Αναλυτικό Βιογραφικό Σημείωμα
- Ευκρινή φωτοαντίγραφα τίτλων σπουδών
- Πρόσφατη βεβαίωση σπουδών υποψήφιου διδάκτορα
ΥΠΟΒΟΛΗ ΠΡΟΤΑΣΕΩΝ
Οι ενδιαφερόμενοι καλούνται να υποβάλουν τις αιτήσεις τους και όλα τα απαραίτητα δικαιολογητικά, ηλεκτρονικά στη διεύθυνση hr@iesl.forth.gr με κοινοποίηση (cc): στον Δρ Εμμ. Στρατάκη (stratak@iesl.forth.gr). Οι αιτήσεις θα πρέπει να αποσταλούν με την ένδειξη: «Αίτηση στο πλαίσιο του προγράμματος SMARTPACK, της πρόσκλησης εκδήλωσης ενδιαφέροντος με Α.Π. … και κωδικό θέσης … » (όπως αυτός αναφέρεται στον Πίνακα του Παραρτήματος). Αντικατάσταση της πρότασης ή διόρθωση αυτής ή
Appointment Duration
6 monthsPosition Description
Development and characterization of semiconducting nano- and/or microcrystals, with emphasis on inorganic halogen perovskites. The aim is to apply these materials to gas and/or breath detection and energy storage.
For the full announcement, follow the link "Related Documents"
Required Qualifications
- Bachelor's degree (B.Sc.) from a School of Sciences or a related school
- Postgraduate Diploma in a School of Sciences or a related school
- Experimental laboratory experience in materials development and characterization techniques
- Relevant publications
Application Procedure
Interested candidates who meet the aforementioned requirements are kindly asked to submit their applications with cc to the Scientific Responsible, Dr Emmanuel Stratakis (stratak@iesl.forth.gr).
In order to be considered, the application must include:
- Application Form (Form Greek or Form English to the left)
- Detailed curriculum vitae (CV) of the candidate
- Scanned Copies of academic titles
- Certificate for enrollment in a PhD program
Appointment Duration
12 monthsPosition Description
Establish and maintain project management, administrative and secretarial support, preparation of financial statements, organization and secretarial support of conferences, support in the dissemination of project’s results.
For the full announcement, follow the link "Related Documents"
Related Project
HellasQCI -Required Qualifications
- University Degree in Economics or equivalent
- Experience in project management of funded research programs in Greece
- Experience in administrative and secretarial support, with emphasis in project management
- Experience in MS Office
Desirable Qualifications
Very good knowledge of English
Application Procedure
Interested candidates who meet the aforementioned requirements are kindly asked to submit their applications, no later than February 24, 2023, 23:59 local Greece time to the address (hr@iesl.forth.gr), with cc to Dr George Nikolopoulos (nikolg@iesl.forth.gr).
In order to be considered, the application must include:
- Application Form (Form Greek or Form English to the left)
- Detailed curriculum vitae (CV) of the candidate
- Scanned Copies of academic titles
Appointment Duration
12 months
