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Dataset for: Magnetic field induced polarization enhancement in the photoluminescence of MBE-grown WSe2 layers

Version 1.0

Kuna, Maksymilian; Raczyński, Mateusz; Kucharek, Julia; Taniguchi, Takashi; Watanabe, Kenji; Kazimierczuk, Tomasz; Pacuski, Wojciech; Kossacki, Piotr, 2026, "Dataset for: Magnetic field induced polarization enhancement in the photoluminescence of MBE-grown WSe2 layers", https://doi.org/10.58132/YU2JSI, Dane Badawcze UW, V1

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Description

This data was used as a foundation for the article by Maksymilian Kuna, Mateusz Raczyński, Julia Kucharek, Takashi Taniguchi, Kenji Watanabe, Tomasz Kazimierczuk and Piotr Kossacki, that was published in Solid State Communications.

The archive contains the data used for the creation of all figures presented in the publication.

FIG 1

(a) Characteristic continuous-wave emission spectra obtained at a temperature of 5 K under 700 nm pulsed excitation. The plot highlights the broad Local Exciton (LE) band and the precise positions of the charged exciton (CX) and the neutral exciton (X). Note that the spectrum is slightly distorted by a long-pass filter used to block scattered laser light.

Units: The X-axis represents Energy in millielectronvolts (meV), and the Y-axis represents Intensity in arbitrary units (a.u.).

(b) A map illustrating the steady-state polarization degree as a function of the magnetic field and photon energy, with the specific profiling region delimited by solid black lines.

Units: The X-axis represents Magnetic Field (B) in Teslas (T), the Y-axis represents Energy in meV, and the color scale (Z-axis) represents the Polarization Degree in percentages (%).

(c) A profile of the mean polarization degree calculated from the specific region marked in panel (b), centered at 1585 ± 1 meV.

Units: The X-axis represents Magnetic Field (B) in T, and the Y-axis represents Polarization Degree in %.

(d) A plot of the fitted half-width at half-maximum, $B_{0}$ (HWHM), of the observed dip versus the detected photon energy, demonstrating a stable value across the LE band.

Units: The X-axis represents B0 in milliteslas (mT), and the Y-axis represents Energy in meV.

(e) A plot showing the relative depth of the polarization dip as a function of photon energy, demonstrating a clear decrease to zero at the energy corresponding to the cessation of the effect.

Units: The X-axis represents Relative Depth in %, and the Y-axis represents Energy in meV.

FIG 2

(a) Time-resolved photoluminescence (TR-PL) transients acquired using a streak camera at zero magnetic field (B = 0 T). The data was recorded in two circular polarization detection configurations (co-polarized and cross-polarized) at a temperature of 10 K under 700 nm pulsed laser excitation. The presented data was obtained by integrating the TR-PL signal over the LE spectral range, spanning between 1.45 eV and 1.65 eV.

Units: The X-axis represents Delay Time in picoseconds (ps), and the Y-axis represents Intensity in arbitrary units (arb. u.) on a logarithmic scale.

(b) The temporal evolution of the calculated time-resolved polarization degree derived from the data in panel (a).

Units: The X-axis represents Delay Time in ps, and the Y-axis represents Polarization Degree in %.

FIG 3

(a) Degree of polarization profiles as a function of the applied magnetic field for four different temperatures (5 K, 10 K, 15 K, and 20 K). The data is averaged over the detection energy range of 1570 ± 3 meV.

Units: The X-axis represents Magnetic Field (B) in T, and the Y-axis represents Polarization Degree in %.

(b) The relative depth extracted from the polarization profiles shown in panel (a), plotted against temperature.

Units: The X-axis represents Temperature (T) in Kelvin (K), and the Y-axis represents Relative Depth in %.

(c) The fitted parameter B0 (HWHM) extracted from the profiles shown in panel (a), plotted against temperature.

Units: The X-axis represents Temperature (T) in K, and the Y-axis represents B0 in mT.

Subject
Physics
Keyword

transition metal dichalcogenides, molecular beam epitaxy, valleytronics, pseudospin depolarisation

Related Publication

Maksymilian Kuna, Mateusz Raczyński, Julia Kucharek, Takashi Taniguchi, Kenji Watanabe, Tomasz Kazimierczuk, Wojciech Pacuski, Piotr Kossacki, Magnetic field induced polarization enhancement in the photoluminescence of MBE-grown WSe2 layers, Solid State Communications, Volume 409, 2026, 116263, https://doi.org/10.1016/j.ssc.2025.116263 https://doi.org/10.1016/j.ssc.2025.116263 doi: 10.1016/j.ssc.2025.116263

CC BY - Creative Commons Attribution 4.0 CC BY - Creative Commons Attribution 4.0

1 File
SSC_repo_fig_data.zip
ZIP Archive - 898.5 KB - Mar 24, 2026 - 0 Downloads
MD5: c180036072418d49d01c5a2cd9d51fa9
License: CC BY - Creative Commons Attribution 4.0
Data used to create all Figures and their Subfigures.
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