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Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí2B2C

Identifieur interne : 001180 ( Pascal/Curation ); précédent : 001179; suivant : 001181

Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí2B2C

Auteurs : M. R. Eskildsen [Danemark] ; K. Harada [Japon] ; P. L. Gammel [États-Unis] ; A. B. Abrahamsen [Danemark] ; N. H. Andersen [Danemark] ; G. Ernst [États-Unis] ; A. P. Ramirez [États-Unis] ; D. J. Bishop [États-Unis] ; K. Mortensen [Danemark] ; D. G. Naugle [États-Unis] ; K. D. D. Rathnayaka [États-Unis] ; P. C. Canfield [États-Unis]

Source :

RBID : Pascal:98-0287513

Descripteurs français

English descriptors

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.
pA  
A01 01  1    @0 0028-0836
A02 01      @0 NATUAS
A03   1    @0 Nature : (Lond.)
A05       @2 393
A06       @2 6682
A08 01  1  ENG  @1 Intertwined symmetry of the magnetic modulation and the flux-line lattice in the superconducting state of TmNí2B2C
A11 01  1    @1 ESKILDSEN (M. R.)
A11 02  1    @1 HARADA (K.)
A11 03  1    @1 GAMMEL (P. L.)
A11 04  1    @1 ABRAHAMSEN (A. B.)
A11 05  1    @1 ANDERSEN (N. H.)
A11 06  1    @1 ERNST (G.)
A11 07  1    @1 RAMIREZ (A. P.)
A11 08  1    @1 BISHOP (D. J.)
A11 09  1    @1 MORTENSEN (K.)
A11 10  1    @1 NAUGLE (D. G.)
A11 11  1    @1 RATHNAYAKA (K. D. D.)
A11 12  1    @1 CANFIELD (P. C.)
A14 01      @1 Risø National Laboratory, PO Box 49 @2 4000 Roskilde @3 DNK @Z 1 aut. @Z 4 aut. @Z 5 aut. @Z 9 aut.
A14 02      @1 Advanced Research Laboratory, Hitatchi Ltd @2 Hatoyama, Saitama 350-03 @3 JPN @Z 2 aut.
A14 03      @1 Bell Laboratories, Lucent Technologies, 700 Mountain Avenue @2 Murray Hill, New Jersey 07974 @3 USA @Z 3 aut. @Z 6 aut. @Z 7 aut. @Z 8 aut.
A14 04      @1 Physics Department, Texas A&M University @2 College Station, Texas 77843 @3 USA @Z 10 aut. @Z 11 aut.
A14 05      @1 Ames Laboratory and Department of Physics and Astronomy, Iowa State University @2 Ames, Iowa 50011 @3 USA @Z 12 aut.
A20       @1 242-245
A21       @1 1998
A23 01      @0 ENG
A43 01      @1 INIST @2 142 @5 354000076158760130
A44       @0 0000 @1 © 1998 INIST-CNRS. All rights reserved.
A45       @0 19 ref.
A47 01  1    @0 98-0287513
A60       @1 P @3 LT
A61       @0 A
A64   1    @0 Nature : (London)
A66 01      @0 GBR
C01 01    ENG  @0 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.
C02 01  3    @0 001B70D72N
C03 01  3  FRE  @0 Etude expérimentale @5 01
C03 01  3  ENG  @0 Experimental study @5 01
C03 02  3  FRE  @0 Supraconducteur @5 02
C03 02  3  ENG  @0 Superconductors @5 02
C03 03  3  FRE  @0 Réseau ligne flux @5 03
C03 03  3  ENG  @0 Flux-line lattices @5 03
C03 04  3  FRE  @0 Flux magnétique @5 04
C03 04  3  ENG  @0 Magnetic flux @5 04
C03 05  3  FRE  @0 Magnétisme @5 05
C03 05  3  ENG  @0 Magnetism @5 05
C03 06  3  FRE  @0 Thulium composé @5 10
C03 06  3  ENG  @0 Thulium compounds @5 10
C03 07  3  FRE  @0 Nickel composé @5 11
C03 07  3  ENG  @0 Nickel compounds @5 11
C03 08  X  FRE  @0 Borocarbure @2 NA @5 12
C03 08  X  ENG  @0 Borides carbides @2 NA @5 12
C03 08  X  SPA  @0 Boruro carburo @2 NA @5 12
C03 09  3  FRE  @0 Composé quaternaire @5 13
C03 09  3  ENG  @0 Quaternary compounds @5 13
C03 10  3  FRE  @0 7472N @2 PAC @4 INC @5 56
C03 11  3  FRE  @0 TmNi2B2C @4 INC @5 92
C03 12  3  FRE  @0 B C Ni Tm @4 INC @5 93
C07 01  3  FRE  @0 Composé minéral @5 16
C07 01  3  ENG  @0 Inorganic compounds @5 16
C07 02  3  FRE  @0 Métal transition composé @5 17
C07 02  3  ENG  @0 Transition element compounds @5 17
N21       @1 187

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Pascal:98-0287513

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B
<sub>2</sub>
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<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>
</TEI>
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<s0>Nature : (Lond.)</s0>
</fA03>
<fA05>
<s2>393</s2>
</fA05>
<fA06>
<s2>6682</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG">
<s1>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</s1>
</fA08>
<fA11 i1="01" i2="1">
<s1>ESKILDSEN (M. R.)</s1>
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<s1>HARADA (K.)</s1>
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<s1>GAMMEL (P. L.)</s1>
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<s1>ABRAHAMSEN (A. B.)</s1>
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<s1>ANDERSEN (N. H.)</s1>
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<s1>ERNST (G.)</s1>
</fA11>
<fA11 i1="07" i2="1">
<s1>RAMIREZ (A. P.)</s1>
</fA11>
<fA11 i1="08" i2="1">
<s1>BISHOP (D. J.)</s1>
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<fA11 i1="09" i2="1">
<s1>MORTENSEN (K.)</s1>
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<s1>NAUGLE (D. G.)</s1>
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<s1>RATHNAYAKA (K. D. D.)</s1>
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<fA11 i1="12" i2="1">
<s1>CANFIELD (P. C.)</s1>
</fA11>
<fA14 i1="01">
<s1>Risø National Laboratory, PO Box 49</s1>
<s2>4000 Roskilde</s2>
<s3>DNK</s3>
<sZ>1 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>9 aut.</sZ>
</fA14>
<fA14 i1="02">
<s1>Advanced Research Laboratory, Hitatchi Ltd</s1>
<s2>Hatoyama, Saitama 350-03</s2>
<s3>JPN</s3>
<sZ>2 aut.</sZ>
</fA14>
<fA14 i1="03">
<s1>Bell Laboratories, Lucent Technologies, 700 Mountain Avenue</s1>
<s2>Murray Hill, New Jersey 07974</s2>
<s3>USA</s3>
<sZ>3 aut.</sZ>
<sZ>6 aut.</sZ>
<sZ>7 aut.</sZ>
<sZ>8 aut.</sZ>
</fA14>
<fA14 i1="04">
<s1>Physics Department, Texas A&M University</s1>
<s2>College Station, Texas 77843</s2>
<s3>USA</s3>
<sZ>10 aut.</sZ>
<sZ>11 aut.</sZ>
</fA14>
<fA14 i1="05">
<s1>Ames Laboratory and Department of Physics and Astronomy, Iowa State University</s1>
<s2>Ames, Iowa 50011</s2>
<s3>USA</s3>
<sZ>12 aut.</sZ>
</fA14>
<fA20>
<s1>242-245</s1>
</fA20>
<fA21>
<s1>1998</s1>
</fA21>
<fA23 i1="01">
<s0>ENG</s0>
</fA23>
<fA43 i1="01">
<s1>INIST</s1>
<s2>142</s2>
<s5>354000076158760130</s5>
</fA43>
<fA44>
<s0>0000</s0>
<s1>© 1998 INIST-CNRS. All rights reserved.</s1>
</fA44>
<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>
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<s0>Superconductors</s0>
<s5>02</s5>
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<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>
</inist>
</record>

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