|Title||Elastic softening due to the quadrupole interaction and anomalous magnetic phase diagram under the magnetic field in HoRu2Al10|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Kamikawa, S, Ishii, I, Takezawa, K, Mizuno, T, Sakami, T, Nakagawa, F, Tanida, H, Sera, M, Suzuki, T, Mitsumoto, K, Xi, XJ|
|Journal||Physical Review B|
|Type of Article||Article|
nd c axes is also reduced with increasing H, the phase boundary shows an anomalous inflection point around 5 T. With increasing H, we found an enhancement of elastic softening toward T-N due to the quadrupole interaction in the longitudinal and transverse moduli under H||c. We proposed the 4f - level scheme in HoRu2Al10, of which the ground state singlet and the first excited singlet at 0.5 K form a quasidoublet, from orthorhombic crystal electric field analyses. An interlevel quadrupole transition exists between the ground and exited singlets under fields. These suggest a possibility that the quadrupole interaction plays a central role for the inflection point in the phase diagram.
|Custom 1|| |