Assistant Professor of Physics
Ph.D., 2014 - Sogang University
Ph.D., 2019 - Georgia Institute of Technology
Louisiana State University
Department of Physics & Astronomy
210-E Nicholson Hall, Tower Dr.
Baton Rouge, LA 70803-4001
Experimental Condensed Matter Physics
My current research focuses on understanding emergent properties of strongly correlated materials using a combination of experimental and theoretical approaches, including in-house single-crystal growth and physical property characterization, high-fidelity theoretical modeling using HPC, and neutron spectroscopy at Oak Ridge National Laboratory and user facilities around the world. Neutron scattering is a powerful experimental tool that can provide quantitative information on static and dynamic correlations between microscopic degrees of freedom. My group uses neutrons to study a broad range of topics such as quantum and classical spin liquids, frustrated magnets, magnetic excitations, multipolar bound-states, multiferroic materials, low-dimensional metal-organic frameworks, Hund's metals, spin density waves, and correlated structural disorders.
X. Bai, S.-S. Zhang, Z. L. Dun, H. Zhang, Q. Huang, H. D. Zhou, M. B. Stone, A. I. Kolesnikov, F. Ye, C. D. Batista, M. Mourigal, “Hybridized quadrupolar excitations in the frustrated and spin-anisotropic magnet FeI2”, Nature Physics 17(4), 467-472 (2021). [arXiv:2004.05623]
X. Bai, R. S. Fishman, G. Sala, D. M. Pajerowski, V. O. Garlea, T. Hong, M. Lee, J. A. Fernandez-Baca, H. Cao, and W. Tian, “Magnetic excitations of the hybrid multiferroic (ND4)2FeCl5D2O”, Physical Review B 103(22), 224411 (2021). [arXiv:2008.06827]
Z. L. Dun, X. Bai, J. A. M. Paddison, E. Hollingworth, N. P. Butch, C. D. Cruz, M. B. Stone, T. Hong, M. Mourigal, H. D. Zhou, “Quantum Versus Classical Spin Fragmentation in Kagome Ice Ho3Mg2Sb3O14”, Physical Review X 10(3), 031069 (2020). [arXiv:1912.11229]
X. Bai, J. A. M. Paddison, E. Kapit, S. M. Koohpayeh, J.-J. Wen, S. E. Dutton, A. T. Savici, A. I. Kolesnikov, G. E. Granroth, C. L. Broholm, J. T. Chalker, and M. Mourigal, “Magnetic Excitations of the Classical Spin Liquid MgCr2O4”, Physical Review Letters 122(9), 097201 (2019). [arXiv:1810.11869]
N. Blanc, J. Trinh, L. Dong, X. Bai, A. A. Aczel, M. Mourigal, L. Balents, T. Siegrist, and A. P. Ramirez, “Quantum criticality among entangled spin chains”, Nature Physics 14(3), 273-276 (2018).
J. A. M. Paddison, H. S. Ong, J. O. Hamp, P. Mukherjee, X. Bai, M. G. Tucker, N. P. Butch, C. Castelnovo, M. Mourigal, and S. E. Dutton, “Emergent order in the kagome Ising magnet Dy3Mg2Sb3O14”, Nature Communications 7(1), 1-8, 13842 (2016). [arXiv:1605.01423]
X. Bai, B.-H. Lee, L. Li, J.-R. Sun, and H.-Q. Zhang, “Time evolution of entanglement entropy in quenched holographic superconductors”, Journal of High Energy Physics 2015(4), 66, (2015). [arXiv:1412.5500]
X. Bai, B.-H. Lee, M. Park, and S. Khimphun, “Dynamical condensation in a holographic superconductor model with anisotropy”, Journal of High Energy Physics 2014(9), 54, (2014). [arXiv:1405.1806]