Resonance Raman Scattering in Layered Transition Metal Chalcogenides

List of Dates (Page event details)

19-11-2024 14:00 - 15:00

Venue

Zoom platform seminar, Institute of Physics P.A.S.

Telephone

+48221162964

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Website

http://www.ifpan.edu.pl

Speaker

Adam Babiński

Affiliation

Department of Physics, Uniwersity of Warsaw

Link

https://zoom.us/j/91201242528?pwd=4meqIvz910KnwoB1ds4BpvZNidg0rC.1

Raman scattering spectroscopy is a standard technique for studying condensed matter.

The application of this technique to two-dimensional materials, whose enormous popularity

we have observed in recent years, reveals additional features that significantly expand our

knowledge of light-matter interactions. The range of effects that appear in the case of

resonant scattering is particularly rich, when the scattering or scattered light remains

in resonance with the density of electronic states in the material. During this presentation,

I will present several examples of resonance effects observed in 2D semiconductor materials.

The influence of resonant excitation on the Raman scattering spectrum in samples with

a thickness of single atomic atomic weights will be presented, including in particular

“brightening” of modes not observed as standard, Davydov splitting, and the influence

of quantum interference on the intensity of Raman modes.

2

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Sahar Nosrati Sanjani, Institute of Nuclear Chemistry and Technology

Date : 02 12 2024

3

Seminarium Rentgenowskie
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12:00
Institute of Physics PAS, Room D, Building I
dr hab. Silvio Osella; Centre of New Technologies, University of Warsaw

Condensed Matter Physics Seminar
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14:00
Zoom platform seminar Institute of Physics P.A.S.
Quantum materials with a kagome lattice structure are a promising platform for condensed matter research due to their peculiar topological, electronic, and magnetic properties. Fe3Sn2 is an intermetallic compound where kagome layers of Fe3Sn and 2D honeycomb Sn layers (stanene) are stacked on top of each other in the layered fashion. The experimental electronic structure studies of the bulk single crystals of Fe3Sn2 revealed existence of massive Dirac fermions [1] and not obvious signatures of the flat bands [2]. During the talk, I will present the results of our investigations of the electronic band structure of the thin films of Fe3Sn2. The films were grown by molecular beam epitaxy on Pt(111) and characterized using a multi-technique approach, including x-ray photoemission spectroscopy (XPS), x-ray diffraction (XRD), scanning tunneling microscopy (STM) and conversion electron Mössbauer spectroscopy (CEMS). The electronic band structure was measured using angle-resolved photoemission (ARPES) at the Phelix end station of the Solaris synchrotron in Krakow. I will present

Date : 03 12 2024

4

Seminarium z Magnetyzmu i Nadprzewodnictwa
Raman scattering in nodal line semimetal ZrAs2

10:00
Institute of Physics PAS, Room 203, Building I
Prof. Dr. hab. Rajmund Bacewicz; Faculty of Physics, Warsaw University of Technology

Seminarium z Fizyki Biologicznej i Bioinformatyki
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15:15
Zoom - Instytut Fizyki PAN, Warszawa
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Date : 04 12 2024

5

Konferencja
XFEL Applications in Material Sciences and Nanotechnology

Institute of Physics, Polish Academy of Sciences
The European Free Electron X-ray Laser (EuXFEL) is among the world's largest ongoing scientific endeavors. Its cutting-edge research capabilities draw top scientists from across the world, enabling the pursuit of ambitious scientific challenges. EuXFEL's experiments significantly advances our understanding across various fields, including medicine, pharmacology, chemistry, materials science, nanotechnology, energy, and electronics, fostering the development of new technologies that impact our everyday lives. The workshop “XFEL applications in Material Sciences and Nanotechnology” is being organized as a part of a project by the Ministry of Science and Higher Education, supporting the development of the Polish XFEL scientific community to fully leverage the new research opportunities offered by the EuXFEL. The event will take place at the Institute of Physics, Polish Academy of Sciences in Warsaw, on December 5-6, 2024.During the workshop, world-class experts will present examples of XFEL research in the field of: materials research at high pressures and

Date : 05 12 2024

6

Konferencja
XFEL Applications in Material Sciences and Nanotechnology

Institute of Physics, Polish Academy of Sciences
The European Free Electron X-ray Laser (EuXFEL) is among the world's largest ongoing scientific endeavors. Its cutting-edge research capabilities draw top scientists from across the world, enabling the pursuit of ambitious scientific challenges. EuXFEL's experiments significantly advances our understanding across various fields, including medicine, pharmacology, chemistry, materials science, nanotechnology, energy, and electronics, fostering the development of new technologies that impact our everyday lives. The workshop “XFEL applications in Material Sciences and Nanotechnology” is being organized as a part of a project by the Ministry of Science and Higher Education, supporting the development of the Polish XFEL scientific community to fully leverage the new research opportunities offered by the EuXFEL. The event will take place at the Institute of Physics, Polish Academy of Sciences in Warsaw, on December 5-6, 2024.During the workshop, world-class experts will present examples of XFEL research in the field of: materials research at high pressures and

Date : 06 12 2024

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10

Condensed Matter Physics Seminar
Unveils the mechanical stimuli by mechanoluminescence: From designing of experimental setups to material analysis.

14:00
Institute of Physics P.A.S. Zoom-transmitted seminar
This study provides a comprehensive analysis of mechanoluminescence (ML) and associated phenomena, ultrasonic-induced luminescence (Us-L). The research begins with the designing of various experimental techniques and setups to study ML and Us-L under diverse mechanical stimuli. The first two setups are directly related to ML analysis, namely Impact-induced ML and Stress-induced ML setups. The third setup focus on the study of Us-L at 20 kHz, utilizing an ultrasonic probe sonicator and a photomultiplier to capture Us-L emissions. The results obtained from multiple measurements of commercially available phosphor materials, includes Sr0.95Ca0.05(SO4):Mn, CaAl2O4:Eu,Dy,La and SrAl2O4:Eu,Dy validate the excellent performance of these setups in various categories of ML studies. In the second part of the study, the mechanoluminescence and ultrasonic-induced luminescence properties of LiTaO3:Pr materials are discussed in detail. The LiTaO3 used as a host material have trigonal R3c structure and praseodymium (Pr) activator

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19-11-2024 14:00 - 15:00