Crystal-field spectrum and linewidths in the heavy-fermion system PrInAg2
Identifieur interne : 012472 ( Main/Repository ); précédent : 012471; suivant : 012473Crystal-field spectrum and linewidths in the heavy-fermion system PrInAg2
Auteurs : RBID : Pascal:00-0040786Descripteurs français
- Pascal (Inist)
- 7127, 7170C, 7520H, Etude expérimentale, Praséodyme composé, Indium composé, Argent composé, Champ cristallin, Composé intermétallique, Diffraction neutron, Diffusion inélastique, Effet Kondo, Largeur raie, Praséodyme alliage, Indium alliage, Argent alliage, Système fermions lourds, Interaction champ cristallin, Chaleur massique, Moment quadripolaire.
English descriptors
- KwdEn :
- Crystal field, Crystal field interactions, Experimental study, Heavy fermion systems, Indium alloys, Indium compounds, Inelastic scattering, Intermetallic compounds, Kondo effect, Line widths, Neutron diffraction, Praseodymium alloys, Praseodymium compounds, Quadrupole moments, Silver alloys, Silver compounds, Specific heat.
Abstract
The heavy-fermion intermetallic compound PrInAg2 has been studied by means of inelastic neutron scattering. In agreement with a previous study, there is clear evidence from both the excitation energies and relative intensities that the crystal-electric-field ground state is the Γ3 nonmagnetic, non-Kramers doublet, and this, together with enhanced thermodynamic properties at low temperatures, indicates that PrInAg2 is a candidate quadrupolar Kondo material. In addition to the Γ3-Γ4 and Γ3-Γ5 excitations, which are seen at low temperature, we have observed the other two allowed transitions, Γ4-Γ1 and Γ4-Γ5, which are visible when the Γ4 triplet becomes thermally populated. Within the Lea-Leask-Wolf parametrization scheme, we obtain W=-0.111±0.006meV and x=-0.079±0.037, values that are similar to but slightly different from those previously reported. No magnetic quasielastic scattering is seen, down to ∼90 μeV, and this provides further evidence that the heavy-fermion behavior is unconventional and has a nonmagnetic origin. However, both the Γ3-Γ4 and Γ3-Γ5 levels are broadened significantly and to differing degrees. Possible sources of this broadening are discussed.
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Kelley</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics, University of California, Riverside, California 92521</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Physics, University of California, Riverside</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Department of Physics, University of California, Riverside, California 92521</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Physics, University of California, Riverside</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="04"><s1>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName><wicri:cityArea>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="05"><s1>Intense Pulsed Neutron Source, 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>Intense Pulsed Neutron Source, Argonne National Laboratory, Argonne</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="06"><s1>Ames Laboratory and Iowa State University, Ames, Iowa 50011</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Iowa</region></placeName><wicri:cityArea>Ames Laboratory and Iowa State University, Ames</wicri:cityArea></affiliation></author><author><name sortKey="Beyermann, W P" uniqKey="Beyermann W">W. P. Beyermann</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics, University of California, Riverside, California 92521</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Physics, University of California, Riverside</wicri:cityArea></affiliation></author><author><name sortKey="Robinson, R A" uniqKey="Robinson R">R. A. Robinson</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics, University of California, Riverside, California 92521</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Physics, University of California, Riverside</wicri:cityArea></affiliation></author><author><name sortKey="Trouw, F" uniqKey="Trouw F">F. Trouw</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics, University of California, Riverside, California 92521</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Physics, University of California, Riverside</wicri:cityArea></affiliation></author><author><name sortKey="Canfield, P C" uniqKey="Canfield P">P. C. Canfield</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics, University of California, Riverside, California 92521</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Physics, University of California, Riverside</wicri:cityArea></affiliation></author><author><name sortKey="Nakotte, H" uniqKey="Nakotte H">H. Nakotte</name></author></titleStmt><publicationStmt><idno type="inist">00-0040786</idno><date when="2000-01-15">2000-01-15</date><idno type="stanalyst">PASCAL 00-0040786 AIP</idno><idno type="RBID">Pascal:00-0040786</idno><idno type="wicri:Area/Main/Corpus">013D62</idno><idno type="wicri:Area/Main/Repository">012472</idno></publicationStmt><seriesStmt><idno type="ISSN">0163-1829</idno><title level="j" type="abbreviated">Phys. rev., B, Condens. matter</title><title level="j" type="main">Physical review. B, Condensed matter</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Crystal field</term><term>Crystal field interactions</term><term>Experimental study</term><term>Heavy fermion systems</term><term>Indium alloys</term><term>Indium compounds</term><term>Inelastic scattering</term><term>Intermetallic compounds</term><term>Kondo effect</term><term>Line widths</term><term>Neutron diffraction</term><term>Praseodymium alloys</term><term>Praseodymium compounds</term><term>Quadrupole moments</term><term>Silver alloys</term><term>Silver compounds</term><term>Specific heat</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>7127</term><term>7170C</term><term>7520H</term><term>Etude expérimentale</term><term>Praséodyme composé</term><term>Indium composé</term><term>Argent composé</term><term>Champ cristallin</term><term>Composé intermétallique</term><term>Diffraction neutron</term><term>Diffusion inélastique</term><term>Effet Kondo</term><term>Largeur raie</term><term>Praséodyme alliage</term><term>Indium alliage</term><term>Argent alliage</term><term>Système fermions lourds</term><term>Interaction champ cristallin</term><term>Chaleur massique</term><term>Moment quadripolaire</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The heavy-fermion intermetallic compound PrInAg<sub>2</sub> has been studied by means of inelastic neutron scattering. In agreement with a previous study, there is clear evidence from both the excitation energies and relative intensities that the crystal-electric-field ground state is the Γ<sub>3</sub> nonmagnetic, non-Kramers doublet, and this, together with enhanced thermodynamic properties at low temperatures, indicates that PrInAg<sub>2</sub> is a candidate quadrupolar Kondo material. In addition to the Γ<sub>3</sub>-Γ<sub>4</sub> and Γ<sub>3</sub>-Γ<sub>5</sub> excitations, which are seen at low temperature, we have observed the other two allowed transitions, Γ<sub>4</sub>-Γ<sub>1</sub> and Γ<sub>4</sub>-Γ<sub>5</sub>, which are visible when the Γ<sub>4</sub> triplet becomes thermally populated. Within the Lea-Leask-Wolf parametrization scheme, we obtain W=-0.111±0.006meV and x=-0.079±0.037, values that are similar to but slightly different from those previously reported. No magnetic quasielastic scattering is seen, down to ∼90 μeV, and this provides further evidence that the heavy-fermion behavior is unconventional and has a nonmagnetic origin. However, both the Γ<sub>3</sub>-Γ<sub>4</sub> and Γ<sub>3</sub>-Γ<sub>5</sub> levels are broadened significantly and to differing degrees. Possible sources of this broadening are discussed.</div> </front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0163-1829</s0></fA01><fA02 i1="01"><s0>PRBMDO</s0></fA02><fA03 i2="1"><s0>Phys. rev., B, Condens. matter</s0></fA03><fA05><s2>61</s2></fA05><fA06><s2>3</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Crystal-field spectrum and linewidths in the heavy-fermion system PrInAg<sub>2</sub></s1></fA08><fA11 i1="01" i2="1"><s1>KELLEY (T. M.)</s1></fA11><fA11 i1="02" i2="1"><s1>BEYERMANN (W. P.)</s1></fA11><fA11 i1="03" i2="1"><s1>ROBINSON (R. A.)</s1></fA11><fA11 i1="04" i2="1"><s1>TROUW (F.)</s1></fA11><fA11 i1="05" i2="1"><s1>CANFIELD (P. C.)</s1></fA11><fA11 i1="06" i2="1"><s1>NAKOTTE (H.)</s1></fA11><fA14 i1="01"><s1>Department of Physics, University of California, Riverside, California 92521</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="02"><s1>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>1 aut.</sZ></fA14><fA14 i1="03"><s1>Department of Physics, University of California, Riverside, California 92521</s1></fA14><fA14 i1="04"><s1>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1></fA14><fA14 i1="05"><s1>Intense Pulsed Neutron Source, Argonne National Laboratory, Argonne, Illinois 60439</s1></fA14><fA14 i1="06"><s1>Ames Laboratory and Iowa State University, Ames, Iowa 50011</s1></fA14><fA14 i1="07"><s1>Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003</s1><sZ>6 aut.</sZ></fA14><fA14 i1="08"><s1>Manuel Lujan, Jr. Neutron Scattering Center, Los Alamos National Laboratory, Los Alamos, New Mexico 87545</s1><sZ>6 aut.</sZ></fA14><fA20><s1>1831-1835</s1></fA20><fA21><s1>2000-01-15</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>144 B</s2></fA43><fA44><s0>8100</s0><s1>© 2000 American Institute of Physics. All rights reserved.</s1></fA44><fA47 i1="01" i2="1"><s0>00-0040786</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Physical review. B, Condensed matter</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>The heavy-fermion intermetallic compound PrInAg<sub>2</sub> has been studied by means of inelastic neutron scattering. In agreement with a previous study, there is clear evidence from both the excitation energies and relative intensities that the crystal-electric-field ground state is the Γ<sub>3</sub> nonmagnetic, non-Kramers doublet, and this, together with enhanced thermodynamic properties at low temperatures, indicates that PrInAg<sub>2</sub> is a candidate quadrupolar Kondo material. In addition to the Γ<sub>3</sub>-Γ<sub>4</sub> and Γ<sub>3</sub>-Γ<sub>5</sub> excitations, which are seen at low temperature, we have observed the other two allowed transitions, Γ<sub>4</sub>-Γ<sub>1</sub> and Γ<sub>4</sub>-Γ<sub>5</sub>, which are visible when the Γ<sub>4</sub> triplet becomes thermally populated. Within the Lea-Leask-Wolf parametrization scheme, we obtain W=-0.111±0.006meV and x=-0.079±0.037, values that are similar to but slightly different from those previously reported. No magnetic quasielastic scattering is seen, down to ∼90 μeV, and this provides further evidence that the heavy-fermion behavior is unconventional and has a nonmagnetic origin. However, both the Γ<sub>3</sub>-Γ<sub>4</sub> and Γ<sub>3</sub>-Γ<sub>5</sub> levels are broadened significantly and to differing degrees. Possible sources of this broadening are discussed.</s0> </fC01><fC02 i1="01" i2="3"><s0>001B70A27</s0></fC02><fC02 i1="02" i2="3"><s0>001B70A70C</s0></fC02><fC02 i1="03" i2="3"><s0>001B70E20H</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>7127</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="02" i2="3" l="FRE"><s0>7170C</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="03" i2="3" l="FRE"><s0>7520H</s0><s2>PAC</s2><s4>INC</s4></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Etude expérimentale</s0></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Experimental study</s0></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Praséodyme composé</s0></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Praseodymium compounds</s0></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Indium composé</s0></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Indium compounds</s0></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Argent composé</s0></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Silver compounds</s0></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Champ cristallin</s0></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Crystal field</s0></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Composé intermétallique</s0></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Intermetallic compounds</s0></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Diffraction neutron</s0></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Neutron diffraction</s0></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Diffusion inélastique</s0></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Inelastic scattering</s0></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Effet Kondo</s0></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Kondo effect</s0></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Largeur raie</s0></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Line widths</s0></fC03><fC03 i1="14" i2="3" l="FRE"><s0>Praséodyme alliage</s0></fC03><fC03 i1="14" i2="3" l="ENG"><s0>Praseodymium alloys</s0></fC03><fC03 i1="15" i2="3" l="FRE"><s0>Indium alliage</s0></fC03><fC03 i1="15" i2="3" l="ENG"><s0>Indium alloys</s0></fC03><fC03 i1="16" i2="3" l="FRE"><s0>Argent alliage</s0></fC03><fC03 i1="16" i2="3" l="ENG"><s0>Silver alloys</s0></fC03><fC03 i1="17" i2="3" l="FRE"><s0>Système fermions lourds</s0></fC03><fC03 i1="17" i2="3" l="ENG"><s0>Heavy fermion systems</s0></fC03><fC03 i1="18" i2="3" l="FRE"><s0>Interaction champ cristallin</s0></fC03><fC03 i1="18" i2="3" l="ENG"><s0>Crystal field interactions</s0></fC03><fC03 i1="19" i2="3" l="FRE"><s0>Chaleur massique</s0></fC03><fC03 i1="19" i2="3" l="ENG"><s0>Specific heat</s0></fC03><fC03 i1="20" i2="3" l="FRE"><s0>Moment quadripolaire</s0></fC03><fC03 i1="20" i2="3" l="ENG"><s0>Quadrupole moments</s0></fC03><fN21><s1>024</s1></fN21><fN47 i1="01" i2="1"><s0>0003M000332</s0></fN47></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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