Experimental Evidence for Two-Dimensional Magnetic Order in Proton Bombarded Graphite

Abstract

We have prepared magnetic graphite samples bombarded by protons at low temperatures and low fluences to attenuate the large thermal annealing produced during irradiation. An overall optimization of sample handling allowed us to find Curie temperatures $T_c\gtrsim 350$ K at the used fluences. The magnetization versus temperature shows unequivocally a linear dependence, which can be interpreted as due to excitations of spin waves in a two dimensional Heisenberg model with a weak uniaxial anisotropy.

4 pages, 3 figures

References in corpus (5)

• Electric Field Effect in Atomically Thin Carbon Films
• Room-Temperature Quantum Hall Effect in Graphene
• Magnetism in Graphene Induced by Single-Atom Defects
• Induced Magnetic Ordering by Proton Irradiation in Graphite
• $\pi$-Electron Ferromagnetism in Metal Free Carbon Probed by Soft X-Ray Dichroism

Cited by in corpus (9)

• Magnetic Correlations at Graphene Edges
• Magnetism in Disordered Graphene and Irradiated Graphite
• Modeling disorder in graphene
• Tuning the electronic structure of graphene by ion irradiation
• A Defective Graphene Phase Predicted to be a Room Temperature Ferromagnetic Semiconductor
• Magnetic moments in the presence of topological defects in graphene
• Dislocations in graphene
• Intrinsic Superconductivity at 25 K in Highly Oriented Pyrolytic Graphite
• A comparison of the magnetic properties of Proton- and Iron-implanted graphite