Time and momentum resolved characterization of hybrid plasmonic heterostructure Au/WSe2

Dataset attached to paper titled "Observation of Multi-Directional Energy Transfer in a Hybrid Plasmonic-Excitonic Nanostructure" with time and momentum characterization of a 2D palsmonic heterostructure formed by Au nanoislands on bulk WSe2. It contains Angle-resolved photoemission spectroscopy (ARPES) and time-resolved ARPES data (trARPES.zip); femtosecond electron diffraction (FED) data (FED.zip); optical absorption spectroscopy data (Optical_absorbance.zip) and Transmission electron microscopy micrographs (TEM.zip).

For trARPES.zip, the following table reports the grid of measurements and most important parameters:

Name
Sample temperature (K)

Pump Wavelength (nm)

Pump Duration (fs)
Material

trARPES_Metis_002.mpes.nxs
300
800
35
Au/WSe2

trARPES_Phoibos_Scan2124.mpes.nxs
300
800
35
WSe2

trARPES_Phoibos_Scan2146.mpes.nxs
70
800
35
WSe2

trARPES_Phoibos_Scan2197.mpes.nxs*
70
800
35
Au/WSe2

trARPES_Phoibos_Scan2198.mpes.nxs*
70
800
35
Au/WSe2

trARPES_Phoibos_Scan2212.mpes.nxs*
300
800
35
Au/WSe2

trARPES_Phoibos_Scan2219.mpes.nxs*
300
800
35
Au/WSe2

trARPES_Phoibos_Scan3159.mpes.nxs
300
1030
200
Au/WSe2

trARPES_Phoibos_Scan3164.mpes.nxs**
300
1030
200
Au/WSe2

trARPES_Phoibos_Scan3185.mpes.nxs
300
1030
200
WSe2

*These scans are acquired with higher angular dispersion requiring separate scans for K and Sigma valleys.

**Fluence scan.

FED.zip contains the following subfolders:

Manuscript_Figure: Experimental data and fit parameters depicted in Figure 4 of the main article.

Analysis: Additional information for the FED data including: raw data descriptions (delay, power, filename and more), Matlab scripts with comments, masks and backgrounds for image processing. The Static_patterns subfolder contains electron diffraction patterns of pure WSe2 flakes and Au-covered WSe2 flakes.

Optical_absorbance.zip contains the following subfolders & subfiles:

without Au & with Au containing all the optical measurements of pristine and Au-covered WSe2 flakes, respectively.

comparison_with_and_without_Au.xlsx contains the analysis of the difference curves

manuscript_figure.txt contains the data that were used in Figure 1 of the main article.