Localized 5f electrons in superconducting PuCoIn5: consequences for superconductivity in PuCoGa5
Identifieur interne : 001897 ( Main/Repository ); précédent : 001896; suivant : 001898Localized 5f electrons in superconducting PuCoIn5: consequences for superconductivity in PuCoGa5
Auteurs : RBID : Pascal:12-0100510Descripteurs français
- Pascal (Inist)
- Supraconductivité, Fluctuation spin, Etat localisé, Microscopie électronique balayage transmission, Valence, Diagramme phase, Transition phase quantique, Champ critique, Transition supraconductrice, Supraconducteur fermion lourd, Antiferromagnétisme, Conductivité électrique, Plutonium alliage, Cobalt alliage, Gallium alliage, Alliage ternaire, Rhodium alliage, Indium alliage, PuCoGa5, PuCoIn5.
- Wicri :
- geographic : Valence (Drôme).
English descriptors
- KwdEn :
- Antiferromagnetism, Cobalt alloys, Critical field, Electrical conductivity, Gallium alloys, Heavy fermion superconductors, Indium alloys, Localized states, Phase diagrams, Plutonium alloys, Quantum phase transition, Rhodium alloys, Scanning transmission electron microscopy, Spin fluctuations, Superconducting transitions, Superconductivity, Ternary alloys, Valence.
Abstract
The physical properties of the first In analog of the PuMGa5 (M = Co, Rh) family of superconductors, PuCoIn5, are reported. With its unit cell volume being 28% larger than that of PuCoGa5, the characteristic spin-fluctuation energy scale of PuCoIn5 is three to four times smaller than that of PuCoGa5, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa5. This raises the possibility that the high superconducting transition temperature Tc = 18.5 K of PuCoGa5 stems from the proximity to a valence instability, while the superconductivity at Tc = 2.5 K of PuCoIn5 is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.
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Pascal:12-0100510Le document en format XML
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: consequences for superconductivity in PuCoGa<sub>5</sub>
</title>
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<author><name sortKey="Janka, O" uniqKey="Janka O">O. Janka</name>
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<title level="j" type="abbreviated">J. phys., Condens. matter : (Print)</title>
<title level="j" type="main">Journal of physics. Condensed matter : (Print)</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antiferromagnetism</term>
<term>Cobalt alloys</term>
<term>Critical field</term>
<term>Electrical conductivity</term>
<term>Gallium alloys</term>
<term>Heavy fermion superconductors</term>
<term>Indium alloys</term>
<term>Localized states</term>
<term>Phase diagrams</term>
<term>Plutonium alloys</term>
<term>Quantum phase transition</term>
<term>Rhodium alloys</term>
<term>Scanning transmission electron microscopy</term>
<term>Spin fluctuations</term>
<term>Superconducting transitions</term>
<term>Superconductivity</term>
<term>Ternary alloys</term>
<term>Valence</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Supraconductivité</term>
<term>Fluctuation spin</term>
<term>Etat localisé</term>
<term>Microscopie électronique balayage transmission</term>
<term>Valence</term>
<term>Diagramme phase</term>
<term>Transition phase quantique</term>
<term>Champ critique</term>
<term>Transition supraconductrice</term>
<term>Supraconducteur fermion lourd</term>
<term>Antiferromagnétisme</term>
<term>Conductivité électrique</term>
<term>Plutonium alliage</term>
<term>Cobalt alliage</term>
<term>Gallium alliage</term>
<term>Alliage ternaire</term>
<term>Rhodium alliage</term>
<term>Indium alliage</term>
<term>PuCoGa5</term>
<term>PuCoIn5</term>
</keywords>
<keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Valence (Drôme)</term>
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<front><div type="abstract" xml:lang="en">The physical properties of the first In analog of the PuMGa<sub>5</sub>
(M = Co, Rh) family of superconductors, PuCoIn<sub>5</sub>
, are reported. With its unit cell volume being 28% larger than that of PuCoGa<sub>5</sub>
, the characteristic spin-fluctuation energy scale of PuCoIn<sub>5</sub>
is three to four times smaller than that of PuCoGa<sub>5</sub>
, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa<sub>5</sub>
. This raises the possibility that the high superconducting transition temperature T<sub>c</sub>
= 18.5 K of PuCoGa<sub>5</sub>
stems from the proximity to a valence instability, while the superconductivity at T<sub>c</sub>
= 2.5 K of PuCoIn<sub>5</sub>
is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.</div>
</front>
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<fA08 i1="01" i2="1" l="ENG"><s1>Localized 5f electrons in superconducting PuCoIn<sub>5</sub>
: consequences for superconductivity in PuCoGa<sub>5</sub>
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<fA14 i1="03"><s1>Joint Research Center, Institute for Transuranium Elements, European Commission, Postfach 2340</s1>
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<fC01 i1="01" l="ENG"><s0>The physical properties of the first In analog of the PuMGa<sub>5</sub>
(M = Co, Rh) family of superconductors, PuCoIn<sub>5</sub>
, are reported. With its unit cell volume being 28% larger than that of PuCoGa<sub>5</sub>
, the characteristic spin-fluctuation energy scale of PuCoIn<sub>5</sub>
is three to four times smaller than that of PuCoGa<sub>5</sub>
, which suggests that the Pu 5f electrons are in a more localized state relative to PuCoGa<sub>5</sub>
. This raises the possibility that the high superconducting transition temperature T<sub>c</sub>
= 18.5 K of PuCoGa<sub>5</sub>
stems from the proximity to a valence instability, while the superconductivity at T<sub>c</sub>
= 2.5 K of PuCoIn<sub>5</sub>
is mediated by antiferromagnetic spin fluctuations associated with a quantum critical point.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B70D70T</s0>
</fC02>
<fC02 i1="02" i2="3"><s0>001B70D25D</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Supraconductivité</s0>
<s5>02</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Superconductivity</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Fluctuation spin</s0>
<s5>03</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Spin fluctuations</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Etat localisé</s0>
<s5>04</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Localized states</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Microscopie électronique balayage transmission</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Scanning transmission electron microscopy</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Valence</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Valence</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE"><s0>Diagramme phase</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>Phase diagrams</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Transition phase quantique</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Quantum phase transition</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Champ critique</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Critical field</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE"><s0>Transition supraconductrice</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG"><s0>Superconducting transitions</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>Supraconducteur fermion lourd</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Heavy fermion superconductors</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Antiferromagnétisme</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Antiferromagnetism</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Conductivité électrique</s0>
<s5>13</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Electrical conductivity</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Plutonium alliage</s0>
<s5>15</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Plutonium alloys</s0>
<s5>15</s5>
</fC03>
<fC03 i1="14" i2="3" l="FRE"><s0>Cobalt alliage</s0>
<s5>16</s5>
</fC03>
<fC03 i1="14" i2="3" l="ENG"><s0>Cobalt alloys</s0>
<s5>16</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE"><s0>Gallium alliage</s0>
<s5>17</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG"><s0>Gallium alloys</s0>
<s5>17</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>Alliage ternaire</s0>
<s5>18</s5>
</fC03>
<fC03 i1="16" i2="3" l="ENG"><s0>Ternary alloys</s0>
<s5>18</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE"><s0>Rhodium alliage</s0>
<s5>19</s5>
</fC03>
<fC03 i1="17" i2="3" l="ENG"><s0>Rhodium alloys</s0>
<s5>19</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE"><s0>Indium alliage</s0>
<s5>20</s5>
</fC03>
<fC03 i1="18" i2="3" l="ENG"><s0>Indium alloys</s0>
<s5>20</s5>
</fC03>
<fC03 i1="19" i2="3" l="FRE"><s0>PuCoGa5</s0>
<s4>INC</s4>
<s5>52</s5>
</fC03>
<fC03 i1="20" i2="3" l="FRE"><s0>PuCoIn5</s0>
<s4>INC</s4>
<s5>63</s5>
</fC03>
<fN21><s1>079</s1>
</fN21>
</pA>
</standard>
</inist>
</record>
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