Kadribasic , F , Mirabolfathi , N , Nordlund , K , Holmström , E & Djurabekova , F 2018 , ' Defect Creation in Crystals : A Portal to Directional Dark Matter Searches ' , Journal of Low Temperature Physics , vol. 193 , no. 5-6 , pp. 1146-1150 . https://doi.org/10.1007/s10909-018-2062-5
Title: | Defect Creation in Crystals : A Portal to Directional Dark Matter Searches |
Author: | Kadribasic, Fedja; Mirabolfathi, Nader; Nordlund, Kai; Holmström, Eero; Djurabekova, Flyura |
Contributor organization: | Department of Physics Helsinki Institute of Physics |
Date: | 2018-12 |
Language: | eng |
Number of pages: | 5 |
Belongs to series: | Journal of Low Temperature Physics |
ISSN: | 0022-2291 |
DOI: | https://doi.org/10.1007/s10909-018-2062-5 |
URI: | http://hdl.handle.net/10138/308764 |
Abstract: | A large body of astrophysical observations indicate that around 85% of the matter in the universe is not made of recognized standard model particles. Understanding the nature of this so-called dark matter is of fundamental importance to cosmology, astrophysics, and high-energy particle physics. We examine the response of commonly used semiconductor materials to low-mass WIMP interactions using numerical simulations based on classical interatomic potentials in these materials. These simulations, backed up by more precise density functional theory simulations and experiments, predict a nonlinear energy loss that never produces phonons due to the nonzero energy required to form crystallographic defects. We argue that such nonlinear effects related to defect formation in electron-volt-scale resolution semiconductor detectors allows for very effective directional sensitivity and possible statistical nuclear recoil discrimination to dark matter signals for masses below 1 GeV/c(2). |
Subject: |
Dark matter detectors
Particle dark matter Semiconductors Density functional theory Molecular dynamics 114 Physical sciences |
Peer reviewed: | Yes |
Rights: | cc_by_nd |
Usage restriction: | openAccess |
Self-archived version: | acceptedVersion |
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