Exploration of Strange Electromagnetics in Carbon Films

TL;DR

This paper presents evidence of high-temperature superconducting-like phenomena in carbon films through various measurements, suggesting possible Josephson junction arrays and magnetic clusters, with implications for particle detection.

Contribution

It provides experimental evidence of superconducting-like behavior in carbon films at high temperatures, proposing a new phase or fluctuations up to 650 K, and suggests particle bombardment as a verification method.

Findings

Observation of reversed Josephson effect voltage dependence on RF frequency and temperature

Detection of Fraunhofer-like oscillations in SQUID magnetization up to 10,000 Oe

Identification of magnetic clusters with median size around 165 nm

Abstract

Results of magnetic force microscopy (MFM), dc SQUID magnetization, reversed Josephson effect (RJE), and resistance measurements in thin carbon arc (CA) films are presented. The observation of a RJE induced voltage as well as its rf frequency, input amplitude, and temperature dependence reveals the existence of Josephson Junction arrays. Oscillating behavior of the DC SQUID magnetization reminiscent of the Fraunhofer-like behavior of superconducting (SC) critical current in the range of 10000 Oe has been observed. The dc SQUID magnetization measurement indicates a possible elementary 102 nm SC loop; this is compared to MFM direct observations of magnetic clusters with a median size of 165 nm. All these data are consistent with the existence of a high temperature SC-like phase or fluctuations up to 650 K. It is proposed to expose such CA film to energetic particle (neutron or ion) bombardment to verify this hypothesis. Such bombardment would change both the structure of film and consequently the experimental measurements. In addition such bombardment-induced changes will provide a basis for particle detectors utilizing the Josephson effect.