| Autor: |
Taufour, Valentin, Kaluarachchi, Udhara S., Khasanov, Rustem, Nguyen, Manh Cuong, Guguchia, Zurab, Biswas, Pabitra Kumar, Bonfá, Pietro, De Renzi, Roberto, Lin, Xiao, Kim, Stella K., Mun, Eun Deok, Kim, Hyunsoo, Furukawa, Yuji, Wang, Cai-Zhuang, Ho, Kai-Ming, Bud'ko, Sergey L., Canfield, Paul C. |
| Rok vydání: |
2016 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Lett. 117 037207 (2016) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.117.037207 |
| Popis: |
The temperature-pressure phase diagram of the ferromagnet LaCrGe$_3$ is determined for the first time from a combination of magnetization, muon-spin-rotation and electrical resistivity measurements. The ferromagnetic phase is suppressed near $2.1$~GPa, but quantum criticality is avoided by the appearance of a magnetic phase, likely modulated, AFM$_Q$. Our density functional theory total energy calculations suggest a near degeneracy of antiferromagnetic states with small magnetic wave vectors $Q$ allowing for the potential of an ordering wave vector evolving from $Q=0$ to finite $Q$, as expected from the most recent theories on ferromagnetic quantum criticality. Our findings show that LaCrGe$_3$ is a very simple example to study this scenario of avoided ferromagnetic quantum criticality and will inspire further study on this material and other itinerant ferromagnets. |
| Databáze: |
arXiv |
| Externí odkaz: |
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