Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W07: Quantum Amplifiers, Bolometers, and Detectors
8:00 AM–11:00 AM,
Friday, March 6, 2020
Room: 102
Sponsoring
Unit:
DQI
Chair: Guilhem Ribeill, BBN Technology - Massachusetts
Abstract: W07.00009 : Her Dark Materials: Comparison of Semiconducting Targets for Multi-Channel Direct Detection of Light Dark Matter
View Presentation
Abstract
Presenter:
Katherine Inzani
(Lawrence Berkeley National Laboratory)
Authors:
Katherine Inzani
(Lawrence Berkeley National Laboratory)
Tanner Trickle
(Department of Physics, University of California, Berkeley)
Zhengkang Zhang
(Department of Physics, University of California, Berkeley)
Kathryn Zurek
(Walter Burke Institute for Theoretical Physics, California Institute of Technology)
Sinéad Griffin
(Lawrence Berkeley National Laboratory)
We have designed a methodology for evaluating the sensitivity of semiconducting materials to DM excitations based on density functional theory calculations.1 The model takes into account three complementary interactions: nuclear recoils, electron transitions across band gaps and single phonon excitations. We include a novel multi-channel response.
Using this framework, we have calculated the performance of 25 materials for a comparison of target sensitivities.2 We identify the materials parameters that must be optimized in order to maximize experimental reach. Furthermore, we evaluate a two-dimensional material which can exhibit the “smoking gun” DM signature of daily and annual modulation.
1arXiv:1910.08092
2arXiv:1910.10716
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