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This content will become publicly available on January 23, 2019

Title: Thermal detection of single e-h pairs in a biased silicon crystal detector

We demonstrate that individual electron-hole pairs are resolved in a 1 cm 2 by 4 mm thick silicon crystal (0.93 g) operated at ~35 mK. One side of the detector is patterned with two quasiparticle-trap-assisted electro-thermal-feedback transition edge sensor arrays held near ground potential. The other side contains a bias grid with 20% coverage. Bias potentials up to ±160 V were used in the work reported here. A fiber optic provides 650 nm (1.9 eV) photons that each produce an electron-hole (e h +) pair in the crystal near the grid. The energy of the drifting charges is measured with a phonon sensor noise σ ~0.09 e h + pair. In conclusion, the observed charge quantization is nearly identical for h +s or e s transported across the crystal.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [1] ; ORCiD logo [3] ;  [1] ; ORCiD logo [2] ; ORCiD logo [1] ;  [4] ;  [2] ;  [1] ;  [1] ;  [5]
  1. Stanford Univ., CA (United States). Dept. of Physics
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst.for Particle Astrophysics and Cosmology
  3. Stanford Univ., CA (United States). Dept. of Physics; SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst.for Particle Astrophysics and Cosmology
  4. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  5. Santa Clara Univ., Santa Clara, CA (United States). Dept. of Physics
Publication Date:
Grant/Contract Number:
AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 4; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
USDOE; National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1424717
Alternate Identifier(s):
OSTI ID: 1417769