H. Jang, S. Gerber, H. Nojiri, S. Matsuzawa, H. Yasumura, D. A. Bonn, R. Liang, W. N. Hardy, Z. Islam, A. Mehta, S. Song, M. Sikorski, D. Stefanescu, Y. Feng, S. A. Kivelson, T. P. Devereaux, Z.-X. Shen, C.-C. Kao, W.-S. Lee, D. Zhu, and J.-S. Lee

SLAC National Accelerator Laboratory

Quantum materials show novel properties under external magnetic field, e.g. structural change, electronic phase transition, and revealing hidden order.

In x-ray scattering experiment, much effort has been devoted to perform the experiment under high magnetic field. In spite of such contributions, x-ray scattering above persistent 18 T is still very challenging. As an alternative way, pulsed field magnets have been utilized as magnetic field generators in synchrotron x-ray scattering experiment and the field strength reaches above 30 T. However, long acquisition time is unavoidable because of small photon flux and long magnet cooling time.

Here, we designed a new approach to x-ray scattering under high magnetic field by taking advantage of brilliant x-ray free electron laser, the Linac Coherent Light Source (LCLS). LCLS generates sufficiently high photon flux for single shot x-ray scattering experiment with high pulsed magnetic field.

As a first achievement, we demonstrated the field induced evolution of charge density wave (CDW) order in YBa₂Cu₃O_6.67 up to 28 T and observed surprising three dimensionally ordered field induced CDW.