Abstract
The transition-metal pnictide system MX (M = transition metal and X = P, As, and Sb) has been studied for several decades because those materials show rich magnetic phase diagrams. Since the recent discovery of unconventional superconductivity in isomorphic CrAs and MnP under high pressures, physical properties of the two materials have been investigated intensively as a function of pressure. In particular, since both materials exhibit quantum critical behavior with applied pressure, magnetic fluctuations are considered to be the key to the superconducting pairing mechanism. Interestingly, both materials were found to show double helical spin structures in the vicinity of the pressure-induced superconducting phase. A review is given on the magnetic properties of MX, including our high-pressure neutron scattering studies performed in CrAs and MnP. We also give a brief review on technical developments of high pressure cells for neutron diffraction, including the high pressure cells used for our high pressure measurements in CrAs and MnP.
| Original language | English |
|---|---|
| Article number | 032001 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 94 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 15 2025 |
Funding
The authors acknowledge the collaboration of S. E. Dissanayake, F. Ye, J.-Q. Yan, K. Yoshimi, S. Kasamatsu, J. Gouchi, K. Matsubayashi, K. Munakata, H. Kagi, S. Chi, M. B. Stone, J. Ma, H. D. Zhou, O. Sugino, T. Miyake, T. Kato, T. Okada, J. L. Luo, D. Zhang, J. Molaison, R. Boehler, B. Haberl, F. K. Lin, R. Yu, W. Wu, J. P. Sun, J. H. Zhang, P. J. Sun, Q. Si, W. Steinhardt, G. Fabbris, and S. Haravifard. Some neutron scattering researches, which were performed by the authors and are referred in this review article, used resources at the High Flux Isotope Reactor and Spallation Neutron Source, DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory and were supported in part by the U.S.\u2013Japan Cooperative Program on Neutron Scattering. YU is partially supported by MEXT, the Grant-in-Aid for Scientific Research Grant No. 19H00648. JGC is supported by the National Natural Science Foundation of China (Grant Nos. 12025408 and 11921004).