Crystalline electric field excitations in the heavy fermion superconductor CeCoIn5
Identifieur interne : 00A430 ( Main/Repository ); précédent : 00A429; suivant : 00A431Crystalline electric field excitations in the heavy fermion superconductor CeCoIn5
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Abstract
The crystalline electric field (CEF) energy level scheme of the heavy fermion superconductor CeCoIn5 has been determined by means of inelastic neutron scattering (INS). Peaks observed in the INS spectra at ∼8 and ∼27 meV with incident neutron energies between Ei=30 and 60 meV and at a temperature T=10 K correspond to transitions from the ground state to the two excited states, respectively. The wave vector and temperature dependence of these peaks are consistent with CEF excitations. Fits of the data to a CEF model yield the CEF parameters B20=-0.80 meV, B40=0.059 meV, and |B44|=0.137 meV corresponding to an energy level scheme: Γ7(1)(0)[=0.487|±5/2-0.873|∓3/2], Γ7(2)(8.6 meV,100 K), and Γ6(24.4 meV,283 K). © 2004 American Institute of Physics.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Crystalline electric field excitations in the heavy fermion superconductor CeCoIn<sub>5</sub></title><author><name sortKey="Bauer, E D" uniqKey="Bauer E">E. D. Bauer</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="04"><s1>University of California, Irvine, California 92697</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>University of California, Irvine</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="05"><s1>Argonne National Laboratory, Argonne, Illinois 60439</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Argonne National Laboratory, Argonne</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="07"><s1>Argonne National Laboratory, Argonne, Illinois 60439</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Illinois</region></placeName><wicri:cityArea>Argonne National Laboratory, Argonne</wicri:cityArea></affiliation></author><author><name sortKey="Christianson, A D" uniqKey="Christianson A">A. D. Christianson</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>2 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>University of California, Irvine, California 92697</s1><sZ>2 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>University of California, Irvine</wicri:cityArea></affiliation></author><author><name sortKey="Lawrence, J M" uniqKey="Lawrence J">J. M. Lawrence</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation></author><author><name sortKey="Goremychkin, E A" uniqKey="Goremychkin E">E. A. Goremychkin</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation></author><author><name sortKey="Moreno, N O" uniqKey="Moreno N">N. O. Moreno</name></author><author><name sortKey="Curro, N J" uniqKey="Curro N">N. J. Curro</name></author><author><name sortKey="Trouw, F R" uniqKey="Trouw F">F. R. Trouw</name></author><author><name sortKey="Sarrao, J L" uniqKey="Sarrao J">J. L. Sarrao</name></author><author><name sortKey="Thompson, J D" uniqKey="Thompson J">J. D. Thompson</name></author><author><name sortKey="Mcqueeney, R J" uniqKey="Mcqueeney R">R. J. Mcqueeney</name></author><author><name sortKey="Bao, W" uniqKey="Bao W">W. Bao</name></author><author><name sortKey="Osborn, R" uniqKey="Osborn R">R. Osborn</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>12 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation></author></titleStmt><publicationStmt><idno type="inist">04-0242620</idno><date when="2004-06-01">2004-06-01</date><idno type="stanalyst">PASCAL 04-0242620 AIP</idno><idno type="RBID">Pascal:04-0242620</idno><idno type="wicri:Area/Main/Corpus">00B706</idno><idno type="wicri:Area/Main/Repository">00A430</idno></publicationStmt><seriesStmt><idno type="ISSN">0021-8979</idno><title level="j" type="abbreviated">J. appl. phys.</title><title level="j" type="main">Journal of applied physics</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cerium alloys</term><term>Cobalt alloys</term><term>Electric field effects</term><term>Excited states</term><term>Experimental study</term><term>Heavy fermion superconductors</term><term>Indium alloys</term><term>Magnetic superconductors</term><term>Magnetic susceptibility</term><term>Neutron diffraction</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>7425J</term><term>7425H</term><term>7470T</term><term>7470A</term><term>Etude expérimentale</term><term>Cobalt alliage</term><term>Cérium alliage</term><term>Indium alliage</term><term>Supraconducteur fermion lourd</term><term>Supraconducteur magnétique</term><term>Susceptibilité magnétique</term><term>Diffraction neutron</term><term>Etat excité</term><term>Effet champ électrique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The crystalline electric field (CEF) energy level scheme of the heavy fermion superconductor CeCoIn<sub>5</sub> has been determined by means of inelastic neutron scattering (INS). Peaks observed in the INS spectra at ∼8 and ∼27 meV with incident neutron energies between E<sub>i</sub>=30 and 60 meV and at a temperature T=10 K correspond to transitions from the ground state to the two excited states, respectively. The wave vector and temperature dependence of these peaks are consistent with CEF excitations. Fits of the data to a CEF model yield the CEF parameters B<sub>2</sub><sup>0</sup>=-0.80 meV, B<sub>4</sub><sup>0</sup>=0.059 meV, and |B<sub>4</sub><sup>4</sup>|=0.137 meV corresponding to an energy level scheme: Γ<sub>7</sub><sup>(1)</sup>(0)[=0.487|±5/2-0.873|∓3/2], Γ<sub>7</sub><sup>(2)</sup>(8.6 meV,100 K), and Γ<sub>6</sub>(24.4 meV,283 K). © 2004 American Institute of Physics.</div> </front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0021-8979</s0></fA01><fA02 i1="01"><s0>JAPIAU</s0></fA02><fA03 i2="1"><s0>J. appl. phys.</s0></fA03><fA05><s2>95</s2></fA05><fA06><s2>11</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Crystalline electric field excitations in the heavy fermion superconductor CeCoIn<sub>5</sub></s1></fA08><fA11 i1="01" i2="1"><s1>BAUER (E. D.)</s1></fA11><fA11 i1="02" i2="1"><s1>CHRISTIANSON (A. D.)</s1></fA11><fA11 i1="03" i2="1"><s1>LAWRENCE (J. M.)</s1></fA11><fA11 i1="04" i2="1"><s1>GOREMYCHKIN (E. A.)</s1></fA11><fA11 i1="05" i2="1"><s1>MORENO (N. O.)</s1></fA11><fA11 i1="06" i2="1"><s1>CURRO (N. J.)</s1></fA11><fA11 i1="07" i2="1"><s1>TROUW (F. R.)</s1></fA11><fA11 i1="08" i2="1"><s1>SARRAO (J. L.)</s1></fA11><fA11 i1="09" i2="1"><s1>THOMPSON (J. D.)</s1></fA11><fA11 i1="10" i2="1"><s1>MCQUEENEY (R. J.)</s1></fA11><fA11 i1="11" i2="1"><s1>BAO (W.)</s1></fA11><fA11 i1="12" i2="1"><s1>OSBORN (R.)</s1></fA11><fA14 i1="01"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>12 aut.</sZ></fA14><fA14 i1="02"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>2 aut.</sZ></fA14><fA14 i1="03"><s1>University of California, Irvine, California 92697</s1><sZ>2 aut.</sZ></fA14><fA14 i1="04"><s1>University of California, Irvine, California 92697</s1></fA14><fA14 i1="05"><s1>Argonne National Laboratory, Argonne, Illinois 60439</s1></fA14><fA14 i1="06"><s1>Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ><sZ>9 aut.</sZ><sZ>10 aut.</sZ><sZ>11 aut.</sZ></fA14><fA14 i1="07"><s1>Argonne National Laboratory, Argonne, Illinois 60439</s1></fA14><fA20><s1>7201-7203</s1></fA20><fA21><s1>2004-06-01</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>126</s2></fA43><fA44><s0>8100</s0><s1>© 2004 American Institute of Physics. All rights reserved.</s1></fA44><fA47 i1="01" i2="1"><s0>04-0242620</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of applied physics</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>The crystalline electric field (CEF) energy level scheme of the heavy fermion superconductor CeCoIn<sub>5</sub> has been determined by means of inelastic neutron scattering (INS). Peaks observed in the INS spectra at ∼8 and ∼27 meV with incident neutron energies between E<sub>i</sub>=30 and 60 meV and at a temperature T=10 K correspond to transitions from the ground state to the two excited states, respectively. The wave vector and temperature dependence of these peaks are consistent with CEF excitations. Fits of the data to a CEF model yield the CEF parameters B<sub>2</sub><sup>0</sup>=-0.80 meV, B<sub>4</sub><sup>0</sup>=0.059 meV, and |B<sub>4</sub><sup>4</sup>|=0.137 meV corresponding to an energy level scheme: Γ<sub>7</sub><sup>(1)</sup>(0)[=0.487|±5/2-0.873|∓3/2], Γ<sub>7</sub><sup>(2)</sup>(8.6 meV,100 K), and Γ<sub>6</sub>(24.4 meV,283 K). © 2004 American Institute of Physics.</s0> </fC01><fC02 i1="01" i2="3"><s0>001B70D25J</s0></fC02><fC02 i1="02" i2="3"><s0>001B70D25H</s0></fC02><fC02 i1="03" i2="3"><s0>001B70D70T</s0></fC02><fC02 i1="04" i2="3"><s0>001B70D70A</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>7425J</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="02" i2="3" l="FRE"><s0>7425H</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="03" i2="3" l="FRE"><s0>7470T</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="04" i2="3" l="FRE"><s0>7470A</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Etude expérimentale</s0></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Experimental study</s0></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Cobalt alliage</s0></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Cobalt alloys</s0></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Cérium alliage</s0></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Cerium alloys</s0></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Indium alliage</s0></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Indium alloys</s0></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Supraconducteur fermion lourd</s0></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Heavy fermion superconductors</s0></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Supraconducteur magnétique</s0></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Magnetic superconductors</s0></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Susceptibilité magnétique</s0></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Magnetic susceptibility</s0></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Diffraction neutron</s0></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Neutron diffraction</s0></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Etat excité</s0></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Excited states</s0></fC03><fC03 i1="14" i2="3" l="FRE"><s0>Effet champ électrique</s0></fC03><fC03 i1="14" i2="3" l="ENG"><s0>Electric field effects</s0></fC03><fN21><s1>152</s1></fN21><fN47 i1="01" i2="1"><s0>0421M000400</s0></fN47></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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