Next Article in Journal / Special Issue
Evaluation of Bunch Length by Measuring Coherent Synchrotron Radiation with a Narrow-Band Detector at LEBRA
Previous Article in Journal
Polaronic States and Superconductivity in WO3-x
Previous Article in Special Issue
Infrared Synchrotron Radiation and Its Application to the Analysis of Cultural Heritage
Open AccessArticle

Proximity Array Device: A Novel Photon Detector Working in Long Wavelengths

Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Fisica Nucleare, Via Enrico Fermi 54, 00044 Frascati, Italy
Istituto Nazionale di Ricerca Metrologica (INRiM), Strada delle Cacce 91, 10135 Torino, Italy
Consiglio Nazionale delle Ricerche, Istituto di Fotonica e Nanotecnologie, Rome 00156, Italy
Institute for Metallic Materials, IFW-Dresden, Dresden 01069, Germany
INFN and Department of Physics, Università degli Studi di Sapienza, 00185 Rome, Italy
International Centre for Material Science Superstripes, RICMASS, via dei Sabelli 119A, 00185 Rome, Italy
Author to whom correspondence should be addressed.
Condens. Matter 2020, 5(2), 33;
Received: 7 April 2020 / Accepted: 23 April 2020 / Published: 1 May 2020
We present here an innovative photon detector based on the proximity junction array device (PAD) working at long wavelengths. We show that the vortex dynamics in PAD undergoes a transition from a Mott insulator to a vortex metal state by application of an external magnetic field. The PAD also evidences a Josephson I-V characteristic with the external field dependent tunneling current. At high applied currents, we observe a dissipative regime in which the vortex dynamics is dominated by the quasi-particle contribution from the normal metal. The PAD has a relatively high photo-response even at frequencies below the expected characteristic frequency while, its superconducting properties such as the order parameter and the Josephson characteristic frequency can be modulated via external fields to widen the detection band. This device represents a promising and reliable candidate for new high-sensitivity long-wavelength detectors. View Full-Text
Keywords: niobium; proximity effects; superconductivity; detectors; terahertz; Vortex dynamics niobium; proximity effects; superconductivity; detectors; terahertz; Vortex dynamics
Show Figures

Figure 1

MDPI and ACS Style

Rezvani, S.J.; Gioacchino, D.D.; Gatti, C.; Ligi, C.; Guidi, M.C.; Cibella, S.; Fretto, M.; Poccia, N.; Lupi, S.; Marcelli, A. Proximity Array Device: A Novel Photon Detector Working in Long Wavelengths. Condens. Matter 2020, 5, 33.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop