Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí2B2C
Identifieur interne : 001180 ( Pascal/Corpus ); précédent : 001179; suivant : 001181Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí2B2C
Auteurs : M. R. Eskildsen ; K. Harada ; P. L. Gammel ; A. B. Abrahamsen ; N. H. Andersen ; G. Ernst ; A. P. Ramirez ; D. J. Bishop ; K. Mortensen ; D. G. Naugle ; K. D. D. Rathnayaka ; P. C. CanfieldSource :
- Nature : (London) [ 0028-0836 ] ; 1998.
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English descriptors
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Abstract
Materials that can in principle exhibit both superconductivity and ferromagnetism are caught in a dilemma: both states represent long-range order, but are in general mutually exclusive. When the material favours a ground state with a large magnetic moment, as is the case for Er4Rh4B (ref. 1), superconductivity is destroyed. For superconductivity to persist, the magnetic structure would need to adopt an antiferromagnetic modulation of short enough wavelength to ensure a small net moment on the length scale of the superconducting coherence length. The intermetallic borocarbide superconductors2-4 RNi2B2C (where R is a rare-earth element) have shed new light on this balance between magnetism and superconductivity. The response of these materials in the superconducting state to a magnetic field is dominated by the formation of a flux-line lattice-a regular array of quantized magnetic vortices whose symmetry and degree of order are easily modified and thus can be expected to interact with an underlying magnetic modulation. In TmNi2B2C, superconductivity and antiferromagnetic modulated ordering coexist below 1.5 K (refs 5-7). Here we present the results of a small-angle neutron-scattering study of this compound which show that the structure of the magnetic modulation and the symmetry of the flux-line lattice are intimately coupled, resulting in a complex phase diagram.
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NO : | PASCAL 98-0287513 INIST |
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ET : | Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí2B2C |
AU : | ESKILDSEN (M. R.); HARADA (K.); GAMMEL (P. L.); ABRAHAMSEN (A. B.); ANDERSEN (N. H.); ERNST (G.); RAMIREZ (A. P.); BISHOP (D. J.); MORTENSEN (K.); NAUGLE (D. G.); RATHNAYAKA (K. D. D.); CANFIELD (P. C.) |
AF : | Risø National Laboratory, PO Box 49/4000 Roskilde/Danemark (1 aut., 4 aut., 5 aut., 9 aut.); Advanced Research Laboratory, Hitatchi Ltd/Hatoyama, Saitama 350-03/Japon (2 aut.); Bell Laboratories, Lucent Technologies, 700 Mountain Avenue/Murray Hill, New Jersey 07974/Etats-Unis (3 aut., 6 aut., 7 aut., 8 aut.); Physics Department, Texas A&M University/College Station, Texas 77843/Etats-Unis (10 aut., 11 aut.); Ames Laboratory and Department of Physics and Astronomy, Iowa State University/Ames, Iowa 50011/Etats-Unis (12 aut.) |
DT : | Publication en série; Lettre à l'éditeur; Niveau analytique |
SO : | Nature : (London); ISSN 0028-0836; Coden NATUAS; Royaume-Uni; Da. 1998; Vol. 393; No. 6682; Pp. 242-245; Bibl. 19 ref. |
LA : | Anglais |
EA : | Materials that can in principle exhibit both superconductivity and ferromagnetism are caught in a dilemma: both states represent long-range order, but are in general mutually exclusive. When the material favours a ground state with a large magnetic moment, as is the case for Er4Rh4B (ref. 1), superconductivity is destroyed. For superconductivity to persist, the magnetic structure would need to adopt an antiferromagnetic modulation of short enough wavelength to ensure a small net moment on the length scale of the superconducting coherence length. The intermetallic borocarbide superconductors2-4 RNi2B2C (where R is a rare-earth element) have shed new light on this balance between magnetism and superconductivity. The response of these materials in the superconducting state to a magnetic field is dominated by the formation of a flux-line lattice-a regular array of quantized magnetic vortices whose symmetry and degree of order are easily modified and thus can be expected to interact with an underlying magnetic modulation. In TmNi2B2C, superconductivity and antiferromagnetic modulated ordering coexist below 1.5 K (refs 5-7). Here we present the results of a small-angle neutron-scattering study of this compound which show that the structure of the magnetic modulation and the symmetry of the flux-line lattice are intimately coupled, resulting in a complex phase diagram. |
CC : | 001B70D72N |
FD : | Etude expérimentale; Supraconducteur; Réseau ligne flux; Flux magnétique; Magnétisme; Thulium composé; Nickel composé; Borocarbure; Composé quaternaire; 7472N; TmNi2B2C; B C Ni Tm |
FG : | Composé minéral; Métal transition composé |
ED : | Experimental study; Superconductors; Flux-line lattices; Magnetic flux; Magnetism; Thulium compounds; Nickel compounds; Borides carbides; Quaternary compounds |
EG : | Inorganic compounds; Transition element compounds |
SD : | Boruro carburo |
LO : | INIST-142.354000076158760130 |
ID : | 98-0287513 |
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Pascal:98-0287513Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Borides carbides</term>
<term>Experimental study</term>
<term>Flux-line lattices</term>
<term>Magnetic flux</term>
<term>Magnetism</term>
<term>Nickel compounds</term>
<term>Quaternary compounds</term>
<term>Superconductors</term>
<term>Thulium compounds</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
<term>Supraconducteur</term>
<term>Réseau ligne flux</term>
<term>Flux magnétique</term>
<term>Magnétisme</term>
<term>Thulium composé</term>
<term>Nickel composé</term>
<term>Borocarbure</term>
<term>Composé quaternaire</term>
<term>7472N</term>
<term>TmNi2B2C</term>
<term>B C Ni Tm</term>
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<front><div type="abstract" xml:lang="en">Materials that can in principle exhibit both superconductivity and ferromagnetism are caught in a dilemma: both states represent long-range order, but are in general mutually exclusive. When the material favours a ground state with a large magnetic moment, as is the case for Er<sub>4</sub>
Rh<sub>4</sub>
B (ref. 1), superconductivity is destroyed. For superconductivity to persist, the magnetic structure would need to adopt an antiferromagnetic modulation of short enough wavelength to ensure a small net moment on the length scale of the superconducting coherence length. The intermetallic borocarbide superconductors<sup>2-4</sup>
RNi<sub>2</sub>
B<sub>2</sub>
C (where R is a rare-earth element) have shed new light on this balance between magnetism and superconductivity. The response of these materials in the superconducting state to a magnetic field is dominated by the formation of a flux-line lattice-a regular array of quantized magnetic vortices whose symmetry and degree of order are easily modified and thus can be expected to interact with an underlying magnetic modulation. In TmNi<sub>2</sub>
B<sub>2</sub>
C, superconductivity and antiferromagnetic modulated ordering coexist below 1.5 K (refs 5-7). Here we present the results of a small-angle neutron-scattering study of this compound which show that the structure of the magnetic modulation and the symmetry of the flux-line lattice are intimately coupled, resulting in a complex phase diagram.</div>
</front>
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<fA14 i1="01"><s1>Risø National Laboratory, PO Box 49</s1>
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<fA14 i1="02"><s1>Advanced Research Laboratory, Hitatchi Ltd</s1>
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<fA14 i1="04"><s1>Physics Department, Texas A&M University</s1>
<s2>College Station, Texas 77843</s2>
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<sZ>10 aut.</sZ>
<sZ>11 aut.</sZ>
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<fA14 i1="05"><s1>Ames Laboratory and Department of Physics and Astronomy, Iowa State University</s1>
<s2>Ames, Iowa 50011</s2>
<s3>USA</s3>
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<fA45><s0>19 ref.</s0>
</fA45>
<fA47 i1="01" i2="1"><s0>98-0287513</s0>
</fA47>
<fA60><s1>P</s1>
<s3>LT</s3>
</fA60>
<fA61><s0>A</s0>
</fA61>
<fA64 i2="1"><s0>Nature : (London)</s0>
</fA64>
<fA66 i1="01"><s0>GBR</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>Materials that can in principle exhibit both superconductivity and ferromagnetism are caught in a dilemma: both states represent long-range order, but are in general mutually exclusive. When the material favours a ground state with a large magnetic moment, as is the case for Er<sub>4</sub>
Rh<sub>4</sub>
B (ref. 1), superconductivity is destroyed. For superconductivity to persist, the magnetic structure would need to adopt an antiferromagnetic modulation of short enough wavelength to ensure a small net moment on the length scale of the superconducting coherence length. The intermetallic borocarbide superconductors<sup>2-4</sup>
RNi<sub>2</sub>
B<sub>2</sub>
C (where R is a rare-earth element) have shed new light on this balance between magnetism and superconductivity. The response of these materials in the superconducting state to a magnetic field is dominated by the formation of a flux-line lattice-a regular array of quantized magnetic vortices whose symmetry and degree of order are easily modified and thus can be expected to interact with an underlying magnetic modulation. In TmNi<sub>2</sub>
B<sub>2</sub>
C, superconductivity and antiferromagnetic modulated ordering coexist below 1.5 K (refs 5-7). Here we present the results of a small-angle neutron-scattering study of this compound which show that the structure of the magnetic modulation and the symmetry of the flux-line lattice are intimately coupled, resulting in a complex phase diagram.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B70D72N</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Etude expérimentale</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Experimental study</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Supraconducteur</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Superconductors</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Réseau ligne flux</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Flux-line lattices</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Flux magnétique</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Magnetic flux</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Magnétisme</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Magnetism</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE"><s0>Thulium composé</s0>
<s5>10</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>Thulium compounds</s0>
<s5>10</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Nickel composé</s0>
<s5>11</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Nickel compounds</s0>
<s5>11</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Borocarbure</s0>
<s2>NA</s2>
<s5>12</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Borides carbides</s0>
<s2>NA</s2>
<s5>12</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Boruro carburo</s0>
<s2>NA</s2>
<s5>12</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE"><s0>Composé quaternaire</s0>
<s5>13</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG"><s0>Quaternary compounds</s0>
<s5>13</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>7472N</s0>
<s2>PAC</s2>
<s4>INC</s4>
<s5>56</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>TmNi2B2C</s0>
<s4>INC</s4>
<s5>92</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>B C Ni Tm</s0>
<s4>INC</s4>
<s5>93</s5>
</fC03>
<fC07 i1="01" i2="3" l="FRE"><s0>Composé minéral</s0>
<s5>16</s5>
</fC07>
<fC07 i1="01" i2="3" l="ENG"><s0>Inorganic compounds</s0>
<s5>16</s5>
</fC07>
<fC07 i1="02" i2="3" l="FRE"><s0>Métal transition composé</s0>
<s5>17</s5>
</fC07>
<fC07 i1="02" i2="3" l="ENG"><s0>Transition element compounds</s0>
<s5>17</s5>
</fC07>
<fN21><s1>187</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 98-0287513 INIST</NO>
<ET>Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí<sub>2</sub>
B<sub>2</sub>
C</ET>
<AU>ESKILDSEN (M. R.); HARADA (K.); GAMMEL (P. L.); ABRAHAMSEN (A. B.); ANDERSEN (N. H.); ERNST (G.); RAMIREZ (A. P.); BISHOP (D. J.); MORTENSEN (K.); NAUGLE (D. G.); RATHNAYAKA (K. D. D.); CANFIELD (P. C.)</AU>
<AF>Risø National Laboratory, PO Box 49/4000 Roskilde/Danemark (1 aut., 4 aut., 5 aut., 9 aut.); Advanced Research Laboratory, Hitatchi Ltd/Hatoyama, Saitama 350-03/Japon (2 aut.); Bell Laboratories, Lucent Technologies, 700 Mountain Avenue/Murray Hill, New Jersey 07974/Etats-Unis (3 aut., 6 aut., 7 aut., 8 aut.); Physics Department, Texas A&M University/College Station, Texas 77843/Etats-Unis (10 aut., 11 aut.); Ames Laboratory and Department of Physics and Astronomy, Iowa State University/Ames, Iowa 50011/Etats-Unis (12 aut.)</AF>
<DT>Publication en série; Lettre à l'éditeur; Niveau analytique</DT>
<SO>Nature : (London); ISSN 0028-0836; Coden NATUAS; Royaume-Uni; Da. 1998; Vol. 393; No. 6682; Pp. 242-245; Bibl. 19 ref.</SO>
<LA>Anglais</LA>
<EA>Materials that can in principle exhibit both superconductivity and ferromagnetism are caught in a dilemma: both states represent long-range order, but are in general mutually exclusive. When the material favours a ground state with a large magnetic moment, as is the case for Er<sub>4</sub>
Rh<sub>4</sub>
B (ref. 1), superconductivity is destroyed. For superconductivity to persist, the magnetic structure would need to adopt an antiferromagnetic modulation of short enough wavelength to ensure a small net moment on the length scale of the superconducting coherence length. The intermetallic borocarbide superconductors<sup>2-4</sup>
RNi<sub>2</sub>
B<sub>2</sub>
C (where R is a rare-earth element) have shed new light on this balance between magnetism and superconductivity. The response of these materials in the superconducting state to a magnetic field is dominated by the formation of a flux-line lattice-a regular array of quantized magnetic vortices whose symmetry and degree of order are easily modified and thus can be expected to interact with an underlying magnetic modulation. In TmNi<sub>2</sub>
B<sub>2</sub>
C, superconductivity and antiferromagnetic modulated ordering coexist below 1.5 K (refs 5-7). Here we present the results of a small-angle neutron-scattering study of this compound which show that the structure of the magnetic modulation and the symmetry of the flux-line lattice are intimately coupled, resulting in a complex phase diagram.</EA>
<CC>001B70D72N</CC>
<FD>Etude expérimentale; Supraconducteur; Réseau ligne flux; Flux magnétique; Magnétisme; Thulium composé; Nickel composé; Borocarbure; Composé quaternaire; 7472N; TmNi2B2C; B C Ni Tm</FD>
<FG>Composé minéral; Métal transition composé</FG>
<ED>Experimental study; Superconductors; Flux-line lattices; Magnetic flux; Magnetism; Thulium compounds; Nickel compounds; Borides carbides; Quaternary compounds</ED>
<EG>Inorganic compounds; Transition element compounds</EG>
<SD>Boruro carburo</SD>
<LO>INIST-142.354000076158760130</LO>
<ID>98-0287513</ID>
</server>
</inist>
</record>
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