REVIEW 7 cited by
Absorption of light dark matter in semiconductors
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
Semiconductors are by now well-established targets for direct detection of MeV to GeV dark matter via scattering off electrons. We show that semiconductor targets can also detect significantly lighter dark matter via an absorption process. When the dark matter mass is above the band gap of the semiconductor (around an eV), absorption proceeds by excitation of an electron into the conduction band. Below the band gap, multi-phonon excitations enable absorption of dark matter in the 0.01 eV to eV mass range. Energetic dark matter particles emitted from the sun can also be probed for masses below an eV. We derive the reach for absorption of a relic kinetically mixed dark photon or pseudoscalar in germanium and silicon, and show that existing direct detection results already probe new parameter space. With only a moderate exposure, low-threshold semiconductor target experiments can exceed current astrophysical and terrestrial constraints on sub-keV bosonic dark matter.
Forward citations
Cited by 7 Pith papers
-
Suppressed Quantum Effects of Weakly Coupled Waves
Nonclassical (quantum) signatures of weakly coupled waves are suppressed by an extra power of the tiny conversion efficiency η (~10^-21 for axions, ~10^-33 for gravitons), so experiments cannot establish the quantizat...
-
Thermal Emission of Dark Photons from Earth's Core
Thermal dark-photon emission from Earth's core, recast onto SENSEI/DAMIC-M bounds, already constrains new ε parameter space; Oscura could improve by 2–3 orders of magnitude near 10^{-4} eV.
-
Direct Detection of Leptophobic Dark Matter with Electronic Collective Excitations
Leptophobic dark matter can excite plasmons in silicon through hadronic loops, and SENSEI data now constrain its nucleon cross section down to ~1e-31 cm^2 in the sub-MeV mass range.
-
Unconventional Materials for Light Dark Matter Detection
TiSe2, Sr2RuO4, and hole-doped diamond are projected to improve sub-MeV dark matter detection reaches by one to three orders of magnitude over existing proposals, with directional sensitivity from their anisotropic responses.
-
Light Dark Matter Detection with Sub-eV Transition-Edge Sensors
Optical transition-edge sensors with sub-eV thresholds are projected to probe unexplored light dark matter parameter space with nanogram-month exposures.
-
2024 TASI Lectures: A Dark Matter Primer
A graduate-level primer covering the evidence for dark matter, the main cosmological production mechanisms (freeze-out, freeze-in, misalignment), and the direct detection formalism, with no new results.
- First High-Throughput Evaluation of Dark Matter Detector Materials
Discussion (0). Sign in to comment.