Strongly coupled electronic, magnetic, and lattice degrees of freedom in LaCo5 under pressure
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Alabama at Birmingham, Birmingham, AL (United States)
We have performed the first high-pressure magnetotransport and x-ray diffraction measurements on ferromagnetic LaCo5, confirming the theoretically predicted electronic topological transition driving the magneto-elastic collapse seen in the related compound YCo5. Our x-ray diffraction results show an anisotropic lattice collapse of the c-axis near 10 GPa that is also commensurate with a change in the majority charge carriers evident from high-pressure Hall effect measurements. Here, the coupling of the electronic, magnetic and lattice degrees of freedom is further substantiated by the evolution of the anomalous Hall effect, which couples to the magnetization of the ordered state of LaCo5.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Carnegie Institution of Washington, Washington, D.C. (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC52-07NA27344; 12-ERD-013; 14-ERD-041; AC52- 07NA27344; NA0001974; FG02-99ER45775; NA0002014; NA0002006
- OSTI ID:
- 1251069
- Alternate ID(s):
- OSTI ID: 1227081; OSTI ID: 1335498
- Report Number(s):
- LLNL-JRNL-672877; PRBMDO
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 17; ISSN 1098-0121
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 5 works
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