Probing into Intraband Transitions Enabled Charge Carrier Dynamics of THz Response Generated in Graphene/MoS <sub>2</sub> Heterostructures
Abstract
Abstract The engineering of terahertz phonons is challenging due to difficulties in achieving sub‐nanometer material precision and in facilitating efficient phonon coupling at terahertz frequencies region. The effective generation, detection, and manipulation of terahertz phonons via the integration of atomically thin layers in van der Waals heterostructures can enable new designs for next‐generation optoelectronic quantum devices, offering new avenues for thermal engineering in the terahertz regime. Here, optical pump terahertz probe and terahertz time‐domain experiments are used to reveal the behavior of charge carrier transfer in real time at heterostructure interfaces of single‐layer graphene and monolayer MoS 2 upon photoexcitation and plausible mechanism has been put forward. Moreover, a temperature‐dependent terahertz response of GM heterostructure along with experimental observation is explored in detail with considered appropriate theoretical models. These insights can prove valuable for designing the next generation of optoelectronic applications with stacked 2D heterostructures within the terahertz bandwidth.
Article Details
Authors (14)
Saloni Sharma
Department of Neurobiology, Harvard Medical School
Divyansh Pratap Singh
Photonic Materials Metrology Sub Division Advanced Materials and Device Metrology Division CSIR‐National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India
Shreeya Rane
Shubhda Srivastava
Photonic Materials Metrology Sub Division Advanced Materials and Device Metrology Division CSIR‐National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India
Anand B Puthirath
Department of Materials Science and NanoEngineering Rice University 6100 Main Street Houston Texas 77005 USA
Ruturaj Puranik
Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research 2 , Mumbai 400005,
Utkarsh Pandey
Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research 2 , Mumbai 400005,
Snehal Haldankar
Vibhavari Parkar
Department of Condensed Matter Physics and Materials Science Tata Institute of Fundamental Research Mumbai Maharashtra 400005 India
Fathimath Faseela
Department of Condensed Matter Physics and Materials Science Tata Institute of Fundamental Research Mumbai Maharashtra 400005 India
Shriganesh S. Prabhu
Department of Condensed Matter Physics and Materials Science Tata Institute of Fundamental Research Mumbai Maharashtra India
Dibakar Roy Chowdhury
Department of Physics, School of Engineering, Anurag University 1 , Hyderabad 500088,
P. M. Ajayan
Department of Materials Science and NanoEngineering Rice University 6100 Main Street Houston Texas 77005 USA
Bipin Kumar Gupta
Photonic Materials Metrology Sub Division Advanced Materials and Device Metrology Division CSIR‐National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110012 India