Dirac band structure in a kagome magnet (IMAGE) Boston College Caption Schematic of the Dirac band evolution in a magnetic field. Blue (grey mesh) cones depict the massive Dirac fermion at non-zero (zero) external magnetic field. Credit Nature Physics Usage Restrictions Must credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.