Hotspot Relaxation Dynamics in a Current Carrying Superconductor
arXiv:1506.03129 · doi:10.1103/PhysRevB.93.094518
Abstract
We experimentally studied the dynamics of optically excited hotspots in current carrying WSi superconducting nanowires as a function of bias current, bath temperature and excitation wavelength. We discovered that: (1) the hotspot relaxation is a factor of ~ 4 slower in WSi than in NbN; (2) the hotspot relaxation time depends on bias current, and (3) the current dependence of the hotspot relaxation time changes with temperature and wavelength. We explained all of these effects with a model based on quasi particle recombination.
References in corpus (3)
- Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition
- Detection Mechanism in SNSPD: Numerical Results of a Conceptually Simple, Yet Powerful Detection Model
- Ultraviolet, Optical, and Near-IR Microwave Kinetic Inductance Detector Materials Developments
Cited by in corpus (28)
- Photonic quantum information processing: a concise review
- Demonstrating sub-3 ps temporal resolution in a superconducting nanowire single-photon detector
- Superconducting Nanowire Single-Photon Detectors for Quantum Information
- Superconducting optoelectronic circuits for neuromorphic computing
- Theory of single photon detection by 'dirty' current-carrying superconducting strip based on the kinetic equation approach
- Fano fluctuations in superconducting nanowire single-photon detectors
- Enhancing intrinsic detection efficiency of superconducting nanowire single-photon detectors via helium ion irradiation
- Characteristics of superconducting tungsten silicide WxSi1-x for single photon detection
- Intrinsic timing jitter and latency in superconducting single photon nanowire detectors
- Quantum detector tomography of superconducting nanostrip photon-number-resolving detector
- Determining the depairing current in superconducting nanowire single-photon detectors
- Superconducting nanowire single-photon detectors fabricated from atomic-layer-deposited NbN
- Superconducting fluctuations and characteristic time scales in amorphous WSi
- Scalable Cryogenic Read-out Circuit for a Superconducting Nanowire Single-Photon Detector System
- Direct measurement of the recovery time of superconducting nanowire single-photon detectors
- Non-bolometric bottleneck in electron-phonon relaxation in ultra-thin WSi film
- Superconducting nanowires as high-rate photon detectors in strong magnetic fields
- Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors
- Probabilistic vortex crossing criterion for superconducting nanowire single-photon detectors
- Probing the Hotspot Interaction Length in NbN Nanowire Superconducting Single-Photon Detectors
- Synchronous single-photon detection with self-resetting GHz-gated superconducting NbN nanowires
- Experimental observation of anomalous supralinear response of single-photon detectors
- Universal bottleneck for thermal relaxation in disordered metallic films
- Non-Equilibrium Charge Dynamics in Majorana-Josephson Devices
- Impact of helium ion irradiation on the thermal properties of superconducting nanowire single-photon detectors
- Stability of thermally bistable states and their switching in superconducting weak link
- An ultrahigh-impedance superconducting thermal switch for interfacing superconductors to semiconductors and optoelectronics
- Nonlinear response of telecom-wavelength superconducting single-photon detectors