Raw data for "Enantiomer-Dependent Study of Photogalvanic Effects in the Multifold Fermion PdGa"
Subedi, Sujan Rai, Manita Crosbie, Alexandre Shekhar, Chandra Felser, Claudia
Subedi, Sujan
Rai, Manita
Crosbie, Alexandre
Shekhar, Chandra
Felser, Claudia
Citations
Altmetric:
Genre
Dataset
Date
2025-10-16
Advisor
Committee member
Group
Department
Physics
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
https://doi.org/10.34944/7dxb-w397
Abstract
We report on a spectroscopic, enantiomer-dependent study of the linear (LPGE) and circular photogalvanic effect (CPGE) in the structurally chiral multifold fermion material PdGa using THz emission. Both bulk and surface responses were measured in right- and left-handed enantiomers over the 0.47 - 1.1 eV incoming photon energy range. The effect of structural handedness was to invert the polarity of the emitted THz transients, yielding spectra roughly equal in magnitude but opposite in sign for all responses measured, with positive (negative) signals generally corresponding to right- (left-) handed samples. All spectra showed evidence of an intraband component and a previously reported interband resonance originating from transitions between the Γ and R points of the Brillouin zone. The spectra deriving from the Fermi arc surface states closely matched that of the bulk, whereas the direction of the CPGE surface response rotated in opposite directions as a function of driving photon energy for the two enantiomers, revealing their complementary, helicoidally dispersing nature.
Description
This repository contains all raw data files for the article, "Enantiomer-Dependent Study of Photogalvanic Effects in the Multifold Fermion PdGa" in two-column, tab-delimited format. The first column is the timestep in ps and the second column is the signal amplitude in V. Each folder contains the data for a different portion of the study, separated by response (linear vs circular photogalvanic effect) and by component of the sample studied (surface vs bulk). Also included is a text file to describe the orientation of the crystal relative to the lab frame for each of the data sets.
Citation
D.H. Torchinsky, W.E. Deeg, S. Subedi, M. Rai, A. Crosbie, M. Zdilla, C. Shekhar, and C. Felser, “Raw data for ‘Enantiomer-Dependent Study of Photogalvanic Effects in the Multifold Fermion PdGa’.” (2025). TUScholarShare Digital Repository. doi: 10.34944/7dxb-w397
Citation to related work
https://doi.org/10.1103/qy9k-z8rz
Has part
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu