Suppression of the antiferromagnetic metallic state in the pressurized single crystal
- Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics and Inst. of Physics; Univ. of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences
- Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics and Inst. of Physics; Univ. of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; Songshan Lake Materials Lab., Dongguan, Guangdong (China)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
- Univ. of Texas, Austin, TX (United States). Inst. for Solid State Physics
- Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Condensed Matter Physics and Inst. of Physics; Univ. of Tokyo (Japan). Inst. for Solid State Physics; Univ. of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; Songshan Lake Materials Lab., Dongguan, G
We study the effect of hydrostatic pressure on the electrical transport, magnetic, and structural properties of by measuring its resistivity, Hall effect, and x-ray diffraction under pressures up to 12.8 GPa supplemented by the first-principles calculations. At ambient pressure, shows a metallic conducting behavior with a cusplike anomaly at around TN ≈ 24 K, where it undergoes a long-range antiferromagnetic (AF) transition. With increasing pressure, TN determined from the resistivity anomaly first increases slightly with a maximum at around 2 GPa and then decreases until vanishing completely at about 7 GPa. Intriguingly, its resistivity is enhanced gradually by pressure and even evolves from metallic to semimetal or semiconductinglike behavior as TN is suppressed. However, the density of the n-type charge carrier that remains dominant under pressure increases with pressure. In addition, the interlayer AF coupling seems to be strengthened under compression, since the critical field H c 1 for the spin-flop transition to the canted AF state is found to increase with pressure. No structural transition was evidenced up to 12.8 GPa, but some lattice softening was observed at about 2 GPa, signaling the occurrence of an electronic transition or crossover from a localized to itinerant state. Finally, we have rationalized these experimental findings by considering the pressure-induced enhancement of antiferromagnetic/ferromagnetic competition and partial delocalization of Mn-3 d electrons, which not only destroys long-range AF order but also promotes charge-carrier localization through enhanced spin fluctuations and/or the formation of a hybridization gap at high pressure.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); National Key Research and Development Program of China; National Science Foundation (NSF)
- Grant/Contract Number:
- AC05-00OR22725; DMR-1729588; 2018YFA0305700; 2018YFA0305800; 11574377; 11888101; 11834016; 11874400; XDB25000000; QYZDB-SSW-SLH013
- OSTI ID:
- 1606901
- Alternate ID(s):
- OSTI ID: 1560315
- Journal Information:
- Physical Review Materials, Vol. 3, Issue 9; ISSN 2475-9953
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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