Switching of magnetic ground states across the UIr1-xRhxGe alloy system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10362629" target="_blank" >RIV/00216208:11320/17:10362629 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevB.95.155138" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.95.155138</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.95.155138" target="_blank" >10.1103/PhysRevB.95.155138</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Switching of magnetic ground states across the UIr1-xRhxGe alloy system

Popis výsledku v původním jazyce

We investigated the evolution ofmagnetism in the UIr1-xRhx Ge system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very similar, resulting in almost identical nearest interatomic uranium distances close to the Hill limit. We established the x-T phase diagram of the UIr1-xRhx Ge system and found a discontinuous antiferromagnetic/ferromagnetic boundary at x(crit) = 0.56, where a local minimum in ordering temperature andmaximum of the Sommerfeld coefficient gamma approximate to 175 mJ/molK(2) occurs in the UCoGe-URhGe-UIrGe system, signaling an increase in magnetic fluctuation. However, a quantum critical point is not realized because of the finite ordering temperature at x(crit). A magnon gap on the antiferromagnetic side abruptly suppresses magnetic fluctuations. We find a field-induced first order transition in the vicinity of the critical magnetic field along the b axis (H-b, crit) in the entire UIr1-xRhx Ge system, including the ferromagnetic region similar to UCo0.6Rh0.4Ge-URhGe.

Název v anglickém jazyce

Switching of magnetic ground states across the UIr1-xRhxGe alloy system

Popis výsledku anglicky

We investigated the evolution ofmagnetism in the UIr1-xRhx Ge system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very similar, resulting in almost identical nearest interatomic uranium distances close to the Hill limit. We established the x-T phase diagram of the UIr1-xRhx Ge system and found a discontinuous antiferromagnetic/ferromagnetic boundary at x(crit) = 0.56, where a local minimum in ordering temperature andmaximum of the Sommerfeld coefficient gamma approximate to 175 mJ/molK(2) occurs in the UCoGe-URhGe-UIrGe system, signaling an increase in magnetic fluctuation. However, a quantum critical point is not realized because of the finite ordering temperature at x(crit). A magnon gap on the antiferromagnetic side abruptly suppresses magnetic fluctuations. We find a field-induced first order transition in the vicinity of the critical magnetic field along the b axis (H-b, crit) in the entire UIr1-xRhx Ge system, including the ferromagnetic region similar to UCo0.6Rh0.4Ge-URhGe.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

—

Svazek periodika

95

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

—

Kód UT WoS článku

000400062900002

EID výsledku v databázi Scopus

2-s2.0-85018183851