Impact of isoelectronic substitution and hydrostatic pressure on the quantum critical properties of CeRhSi3

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10415154" target="_blank" >RIV/00216208:11320/20:10415154 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.imCGLyuEV" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.imCGLyuEV</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-648X/aba015" target="_blank" >10.1088/1361-648X/aba015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of isoelectronic substitution and hydrostatic pressure on the quantum critical properties of CeRhSi3

Popis výsledku v původním jazyce

There is an ongoing dispute in the community about the absence of a magnetic quantum critical point (QCP) in the noncentrosymmetric heavy fermion compound CeRhSi3. In order to explore this question we prepared single crystals of CeRh(Si1-xGex)(3)withx= 0.05 and 0.15 and determined the temperature-pressure (T-p) phase diagram by means of measurements of the electrical resistivity. The substitution of isoelectronic but large Ge enforces a lattice volume increase resulting in a weakening of the Kondo interaction. As a result, thex= 0.05 andx= 0.15 compound exhibit a transition into the antiferromagnetic (AFM) at higher temperatures beingT(N)= 4.7 K andT(N1)= 19.7 K, respectively. Application of pressure suppressesT(N)(T-N1) monotonically and pressure induced superconductivity is observed in both Ge-substituted compounds abovep &gt; 2.16 GPa (x= 0.05) andp &gt; 2.93 GPa (x= 0.15). Extrapolation ofT(N)(p) -&gt; 0 of CeRh(Si0.95Ge0.05)(3)yields a critical pressure ofp(c)approximate to 3.4 GPa (in CeRh(Si0.85Ge0.15)(3) p(c)approximate to 3.5 GPa) pointing to the presence of an AFM QCP located deep inside the superconducting state.

Název v anglickém jazyce

Impact of isoelectronic substitution and hydrostatic pressure on the quantum critical properties of CeRhSi3

Popis výsledku anglicky

There is an ongoing dispute in the community about the absence of a magnetic quantum critical point (QCP) in the noncentrosymmetric heavy fermion compound CeRhSi3. In order to explore this question we prepared single crystals of CeRh(Si1-xGex)(3)withx= 0.05 and 0.15 and determined the temperature-pressure (T-p) phase diagram by means of measurements of the electrical resistivity. The substitution of isoelectronic but large Ge enforces a lattice volume increase resulting in a weakening of the Kondo interaction. As a result, thex= 0.05 andx= 0.15 compound exhibit a transition into the antiferromagnetic (AFM) at higher temperatures beingT(N)= 4.7 K andT(N1)= 19.7 K, respectively. Application of pressure suppressesT(N)(T-N1) monotonically and pressure induced superconductivity is observed in both Ge-substituted compounds abovep &gt; 2.16 GPa (x= 0.05) andp &gt; 2.93 GPa (x= 0.15). Extrapolation ofT(N)(p) -&gt; 0 of CeRh(Si0.95Ge0.05)(3)yields a critical pressure ofp(c)approximate to 3.4 GPa (in CeRh(Si0.85Ge0.15)(3) p(c)approximate to 3.5 GPa) pointing to the presence of an AFM QCP located deep inside the superconducting state.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics Condensed Matter

ISSN

0953-8984

e-ISSN

—

Svazek periodika

32

Číslo periodika v rámci svazku

42

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

425601

Kód UT WoS článku

000555815200001

EID výsledku v databázi Scopus

2-s2.0-85091399346