Ferromagnetic quantum criticality: New aspects from the phase diagram of LaCrGe3

Taufour, Valentin; Kaluarachchi, Udhara S.; Bud'ko, Sergey L.; Canfield, Paul C.

doi:10.1016/j.physb.2017.08.065

Title: Ferromagnetic quantum criticality: New aspects from the phase diagram of ${LaCrGe}_{3}$

Journal Article · Fri Aug 25 00:00:00 EDT 2017 · Physica. B, Condensed Matter

DOI:https://doi.org/10.1016/j.physb.2017.08.065· OSTI ID:1394813

Taufour, Valentin ^[1]; Kaluarachchi, Udhara S. ^[2]; Bud'ko, Sergey L. ^[2]; Canfield, Paul C. ^[2]

Univ. of California, Davis, CA (United States). Dept. of Physics; Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Ames Lab., Ames, IA (United States)
Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Ames Lab., Ames, IA (United States)

Some Recent theoretical and experimental studies have shown that ferromagnetic quantum criticality is always avoided in clean systems. Two possibilities have been identified. In the first scenario, the ferromagnetic transition becomes of the first order at a tricritical point before being suppressed. A wing structure phase diagram is observed indicating the possibility of a new type of quantum critical point under magnetic field. In a second scenario, a transition to a modulated magnetic phase occurs. Our earlier studies on the compound LaCrGe₃ illustrate a third scenario where not only a new magnetic phase occurs, but also a change of order of the transition at a tricritical point leading to a wing-structure phase diagram. Careful experimental study of the phase diagram near the tricritical point also illustrates new rules near this type of point.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1394813

Alternate ID(s):: OSTI ID: 1496323

Report Number(s):: IS-J-9427; PII: S0921452617305483

Journal Information:: Physica. B, Condensed Matter, Vol. 536; ISSN 0921-4526

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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Title: Ferromagnetic quantum criticality: New aspects from the phase diagram of LaCrGe 3

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Title: Ferromagnetic quantum criticality: New aspects from the phase diagram of ${LaCrGe}_{3}$