Chiral Materials and Unconventional Superconductivity Group

We study basic science of quantum materials and develop their applications in energy, and quantum information technology. We grow single crystals and epitaxial films of superconductors and topological materials. We use quantum transport measurements, synchrotron-based and laser-based time-resolved electron and optical spectroscopic techniques, and theoretical modeling to explore quantum states of matter and topological phase transitions. The group is primarily supported by the U.S. Department of Energy, Office of Basic Energy Sciences' “chiral materials and unconventional superconductivity” program at Brookhaven National Laboratory.

Research Topics

• Chiral fermions and quantum information system (PDF)
• Quantum transports in superconductors and topological materials (e.g. chiral anomaly, anomalous Hall effect, quantum Hall effect, and Josephson effect)
• Temperature, magnetic field, strain, and light controlled topological phase transitions
• Pair density wave and stripe orders in superconductors (e.g. 1/8 Ba doped superconducting cuprates)
• Interplay between topology, magnetism, and superconductivity in quantum materials (e.g. magnetic Dirac/Weyl semimetals and iron based superconductors)
• Theoretical modeling using first-principles and effective Hamiltonian methods
• Single crystal growth and pulsed laser deposition of thin films (Laser MBE)
• Time- and angular-resolved photoemission spectroscopy (laser-based and synchrotron based)
• Optical/THz far field and near field spectroscopy under 7 Tesla magnetic field
• Discovery of Chiral Magnetic Effect (PDF)

For highlights of applied superconducting and thermoelectric materials research at the AEM Group, please click here.