Heat transport by long mean free path vibrations in amorphous silicon nitride near room temperature R Sultan, AD Avery, JM Underwood, SJ Mason, D Bassett, BL Zink
Physical review B 87 (21), 214305, 2013
72 2013 One-volt Josephson arbitrary waveform synthesizer SP Benz, SB Waltman, AE Fox, PD Dresselhaus, A Rüfenacht, ...
IEEE Transactions on Applied Superconductivity 25 (1), 1-8, 2014
71 2014 Measurement and modeling of a large-area normal-metal/insulator/superconductor refrigerator with improved cooling GC O'Neil, PJ Lowell, JM Underwood, JN Ullom
Physical Review B 85 (13), 134504, 2012
63 2012 Macroscale refrigeration by nanoscale electron transport PJ Lowell, GC O'Neil, JM Underwood, JN Ullom
Applied Physics Letters 102 (8), 2013
61 2013 Josephson-based full digital bridge for high-accuracy impedance comparisons F Overney, NE Flowers-Jacobs, B Jeanneret, A Rüfenacht, AE Fox, ...
Metrologia 53 (4), 1045, 2016
60 2016 Insensitivity of sub-kelvin electron-phonon coupling to substrate properties JM Underwood, PJ Lowell, GC O’Neil, JN Ullom
Physical review letters 107 (25), 255504, 2011
30 2011 Uncertainty analysis for ac–dc difference measurements with the AC Josephson voltage standard JM Underwood
Metrologia 56 (1), 015012, 2018
27 2018 Direct write metallization for photovoltaic cells and scaling thereof MFAM van Hest, SE Habas, JM Underwood, RM Pasquarelli, P Hersh, ...
2010 35th IEEE Photovoltaic Specialists Conference, 003626-003628, 2010
21 2010 1 V Josephson arbitrary waveform synthesizer SP Benz, SB Waltman, AE Fox, PD Dresselhaus, A Rufenacht, ...
Samuel P. Benz, Steven B. Waltman, Anna E. Fox, Paul D. Dresselhaus, Alain …, 2014
18 2014 Andreev reflections in micrometer-scale normal metal-insulator-superconductor tunnel junctions PJ Lowell, GC O’Neil, JM Underwood, JN Ullom
Journal of Low Temperature Physics 167, 392-397, 2012
15 2012 Sub-100 mK Cooling Using Normal-Metal Insulator Superconductor Tunnel Junctions PJ Lowell, GC O’Neil, JM Underwood, X Zhang, JN Ullom
Journal of Low Temperature Physics 176 (5), 1062-1068, 2014
6 2014 Refrigeration of separate, user-supplied payloads with Normal–Insulator–Superconductor tunnel junctions PJ Lowell, GC O’Neil, JM Underwood, JN Ullom
Cryogenics 52 (4-6), 130-133, 2012
6 2012 Realization of the quantum ampere using the quantum anomalous Hall and Josephson effects LK Rodenbach, NTM Tran, JM Underwood, AR Panna, MP Andersen, ...
arXiv preprint arXiv:2308.00200, 2023
5 2023 Systematic error resolved in NIST Johnson noise thermometer A Pollarolo, W Tew, H Rogalla, JM Underwood, SP Benz
29th Conference on Precision Electromagnetic Measurements (CPEM 2014), 26-27, 2014
4 2014 Observations and modeling of large area normal-metal/insulator/superconductor refrigerator cooling from 300 mk to below 100 mk GC O'Neil, PJ Lowell, JM Underwood, JN Ullom
arXiv preprint arXiv:1109.1273, 2011
4 2011 A surface-sensitive UHV dielectric spectrometer for studies of nanoscale molecular systems on a planar surface JM Underwood, JC Price
Review of Scientific Instruments 79 (9), 2008
3 2008 A fast negative impedance converter for JAWS load compensation J Underwood, S Pfeiffer, G Palo
2020 Conference on Precision Electromagnetic Measurements (CPEM), 1-2, 2020
1 2020 Andreev Reflections in Micrometer-Scale Normal-Insulator-Superconductor Tunnel Junctions PJ Lowell, GC O'Neil, JM Underwood, JN Ullom
arXiv preprint arXiv:1110.4839, 2011
1 2011 Surface-sensitive UHV dielectric studies of nanoscale organic thin films: Adsorption, crystallization, and sublimation JM Underwood
University of Colorado at Boulder, 2008
1 2008 Development of a Topological-Insulator-Based Quantum Resistance Standard NTM Tran, L Rodenbach, J Underwood, A Panna, Z Barcikowski, ...
Bulletin of the American Physical Society, 2024
2024