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

Abstract

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.

Authors:
 [1];  [2];  [2];  [2]
  1. 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)
  2. Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy; Ames Lab., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1394813
Alternate Identifier(s):
OSTI ID: 1496323
Report Number(s):
IS-J-9427
Journal ID: ISSN 0921-4526; PII: S0921452617305483
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physica. B, Condensed Matter
Additional Journal Information:
Journal Volume: 536; Journal ID: ISSN 0921-4526
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ferromagnet; quantum criticality; tricritical point; wing structure; lifshitz point

Citation Formats

Taufour, Valentin, Kaluarachchi, Udhara S., Bud'ko, Sergey L., and Canfield, Paul C. Ferromagnetic quantum criticality: New aspects from the phase diagram of LaCrGe3. United States: N. p., 2017. Web. doi:10.1016/j.physb.2017.08.065.
Taufour, Valentin, Kaluarachchi, Udhara S., Bud'ko, Sergey L., & Canfield, Paul C. Ferromagnetic quantum criticality: New aspects from the phase diagram of LaCrGe3. United States. doi:10.1016/j.physb.2017.08.065.
Taufour, Valentin, Kaluarachchi, Udhara S., Bud'ko, Sergey L., and Canfield, Paul C. Fri . "Ferromagnetic quantum criticality: New aspects from the phase diagram of LaCrGe3". United States. doi:10.1016/j.physb.2017.08.065. https://www.osti.gov/servlets/purl/1394813.
@article{osti_1394813,
title = {Ferromagnetic quantum criticality: New aspects from the phase diagram of LaCrGe3},
author = {Taufour, Valentin and Kaluarachchi, Udhara S. and Bud'ko, Sergey L. and Canfield, Paul C.},
abstractNote = {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.},
doi = {10.1016/j.physb.2017.08.065},
journal = {Physica. B, Condensed Matter},
number = ,
volume = 536,
place = {United States},
year = {2017},
month = {8}
}

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