On the nature of filamentary superconductivity in metal-doped hydrocarbon organic materials

TL;DR

This paper investigates filamentary superconductivity in metal-doped hydrocarbon organic materials, reporting potential new superconductors with transition temperatures around 35 K, expanding understanding of organic superconductivity.

Contribution

It presents experimental evidence of weak superconductivity in Ba-anthracene and K-Picene, suggesting Ba-anthracene as a new organic superconductor near 35 K.

Findings

Ba-anthracene shows signs of superconductivity at ~35 K

K-Picene exhibits weak superconducting features

High Tc of 33 K in K-doped dibenzenopentacene confirmed

Abstract

High temperature superconductivity in K-doped 1,2:8,9-dibenzenopentacene (C30H18) has been recently reported [1] with Tc = 33 K, the highest among organic superconductors at ambient pressure. Here we report on our search for superconductivity in K, Ba, and Ca-doped hydrocarbon organic materials. We find that Ba-anthracene (C14H10) and K-Picene (C22H14) show features characteristics of superconducting state, although very weak. The data suggests that Ba-anthracene might be a new organic superconductor with Tc ~ 35 K.