Overview of project B09

THz Dynamics of Photo-Excited Charge Carriers on the µm Scale

Mittendorff

The goal of this project is the investigation of non-equilibrium charge carrier dynamics in two-dimensional electron gases in different material systems: plasmonic graphene structures, black phosphorus, and oxide heterostructures will allow excitation by various stimuli, e.g. interband or plasmon excitation, and optical phonons driven by THz fields. THz pulses will be utilized to probe the carrier redistribution and relaxation with picosecond temporal and micrometer spatial resolution. The combined results will help to understand the different scattering processes after excitation.

Figb09

Publications


2022

Alexander Kunzmann, Jan Frenzel, Ulrike Wolff, Jeong-Woo Han, Lars Giebeler, David Piorunek, Martin Mittendorff, Juliane Scheiter, Heiko Reith, Nicolas Perez, Kornelius Nielsch, Gunther Eggeler and Gabi Schierning
The Role of Electrons During the Martensitic Phase Transformation in NiTi-Based Shape Memory Alloys
Materials Today Physics 100671 (2022)
DOI: 10.1016/j.mtphys.2022.100671

 

2021

Matthew L. Chin, Sebastian Matschy, Florian Stawitzki, Jayaprakash Poojali, Hassan A. Hafez, Dmitry Turchinovich, Stephan Winnerl, Gagan Kumar, Rachael L. Myers-Ward, Matthew T. Dejarld, Kevin M. Daniels, H Dennis Drew, Thomas E. Murphy and Martin Mittendorff
Observation of Strong Magneto Plasmonic Nonlinearity in Bilayer Graphene Discs
J. Phys. Photonics 3, 01LT01 (2021)
DOI: 10.1088/2515-7647/abd7d0

Sepideh Izadi, Jeong Woo Han, Sarah Salloum, Ulrike Wolff, Lauritz Schnatmann, Aswin Vijai Asaithambi, Sebastian Matschy, Heike Schlörb, Heiko Reith, Nicolas Perez, Kornelius Nielsch, Stephan Schulz, Martin Mittendorff and Gabi Schierning
Interface‐Dominated Topological Transport in Nanograined Bulk Bi2Te3
Small 2021, 2103281 (2021)
DOI: 10.1002/smll.202103281

Jeong Woo Han, Matthew L. Chin, Sebastian Matschy, Jayaprakash Poojali, Angelika Seidl, Stephan Winnerl, Hassan A. Hafez, Dmitry Turchinovich, Gagan Kumar, Rachael L. Myers-Ward, Matthew T. Dejarld, Kevin M. Daniels, Howard Dennis Drew, Thomas E. Murphy and Martin Mittendorff
Plasmonic Terahertz Nonlinearity in Graphene Disks
Advanced Photonics Research 3, 2100218 (2021)
DOI: 10.1002/adpr.202100218

 

2020

Martin Mittendorff, Stephan Winnerl and Thomas E. Murphy
2D THz Optoelectronics
Adv. Optical Mater. 9, 2001500 (2009)
DOI: 10.1002/adom.202001500