| Autor: |
Pospisil, Jiri, Haga, Yoshinori, Kambe, Shinsaku, Tokunaga, Yo, Tateiwa, Naoyuki, Aoki, Dai, Honda, Fuminori, Nakamura, Ai, Homma, Yoshiya, Yamamoto, Etsuji, Yamamura, Tomoo |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 95, 155138, 2017 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.95.155138 |
| Popis: |
We investigated the evolution of magnetism in the UIr1-xRhxGe system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very similar resulting in almost identical nearest interatomic uranium distance close to the Hill limit. We established the x-T phase diagram of the UIr1-xRhxGe system and found a discontinuous antiferromagnetic/ferromagnetic boundary at xcrit = 0.56 where a local minimum in ordering temperature and maximum of the Sommerfeld coefficient 175 mJ/mol K2 occurs in the UCoGe-URhGe-UIrGe system, signaling an increase in magnetic fluctuations. However, a quantum critical point is not realized because of the finite ordering temperature at xcrit. A magnon gap on the antiferromagnetic side abruptly suppresses magnetic fluctuations. We find a field-induced first order transition in the vicinity of the critical magnetic field along the b axis in the entire UIr1-xRhxGe system including the ferromagnetic region UCo0.6Rh0.4Ge - URhGe. |
| Databáze: |
arXiv |
| Externí odkaz: |
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