BT Home

BT Literature Database

Home |  Show All |  Simple Search |  Advanced Search
Quick Search:
1-10 of 36 records found matching your query:
toggle visibility Search & Display Options
Select All    Deselect All << 1 2 3 4 >>
List View
 | 
Citations
 | 
Details
   print
  Records Links
Author Haberkorn, N.; Suárez, S.; Bud'ko, S.L.; Canfield, P.C. url  doi
openurl 
  Title Strong pinning and slow flux creep relaxation in Co-doped CaFe2As2 single crystals Type Journal Article
  Year 2020 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 318 Issue Pages (down) 113963  
  Keywords Iron based superconductors; Single crystals; Vortex dynamics; Magnetization  
  Abstract We report on measurements of critical current densities Jc and flux creep rates S of freestanding Ca(Fe1−xCox)2As2 (x ≈ 0.033) single crystals with Tc ≈ 15.7 K by performing magnetization measurements. The magnetic field dependences of Jc at low temperature display features related to strong pinning. In addition, we find that the system displays small flux creep rates. The characteristic glassy exponent, μ, and the pinning energy, U0, display exceptional high values for pristine crystals. We find that for magnetic fields between 0.3 T and 1 T, μ decreases from ≈ 2.8 to ≈ 2 and U0 remains ≈ 300 K. Analysis of the pinning force indicates that the mechanism is similar to the observed in polycrystalline systems in which grain boundaries and random disorder produce the vortex pinning. Considering the large U0 observed in the single crystal, we attempt to improve the pinning by adding random point disorder by 3 MeV proton irradiation with a fluence of 2 × 1016 proton/cm2. The results show that, unlike other iron-based superconductors, the superconducting fraction is sharply reduced by irradiation. This fact indicates that the superconductivity in the system is extremely fragile to an increment in the disorder. The superconducting volume fraction in the irradiated crystal systematically recovers after removal disorder by thermal annealing, which evidences as to the observation of critical state in curves of magnetization versus magnetic field. No features related to a reentrant antiferromagnetic transition are observed for the irradiated sample.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 859  
Permanent link to this record
 
 
Author Bressan, O.J.; Ridner, A.E.; Luengo, C.A.; Alascio, B. url  doi
openurl 
  Title On the evidence for electron-electron scattering in the electrical resistivity of In Type Journal Article
  Year 1970 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 8 Issue 24 Pages (down) 2129-2133  
  Keywords  
  Abstract Experimental measurements of the electrical magnetoresistivity of high purity Indium at low temperatures have been performed and clearly indicate that:

1. (a) A generalized Kohler's rule can be used to describe all experiments.

2. (b) A reliable method is therefore obtained for extrapolating the zero magnetic field resistivity to temperatures below the superconducting transition temperature.

3. (c) Clear-cut and reliable data show that no T2 dependence of the resistance is found; therefore no evidence of electron-electron interaction appears, contrary to information previously reported in the literature.		  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 548  
Permanent link to this record
 
 
Author Kaufman, H.L.; de la Cruz, F. url  doi
openurl 
  Title Fluctuation induced diamagnetism in aluminum Type Journal Article
  Year 1971 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 9 Issue 20 Pages (down) 1729-1732  
  Keywords  
  Abstract The magnetic field and temperature dependence of the magnetization of bulk aluminum near the normal-superconductor transition has been measured. Due to the large amount of supercooling in one of the samples it was possible to extend the measurements well below the critical temperature. A comparison of the experimental results with theory is presented.

Résumé

Nous avons mesuré la dépendance en champ magnétique et en température de la magnétisation d'un échantillon massif d'aluminium au voisinage de la transition état normal-état supraconducteur. Grâce au ‘supercooling’ important d'un des échantillon, nous avons pu étendre nos mesures bien au dessous de la température critique. Nous comparons les résultats expérimentaux à la théorie.		  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 803  
Permanent link to this record
 
 
Author Sereni, J.G.; Huber, J.G.; Luengo, C.A.; Maple, M.B. doi  openurl
  Title Specific heat of superconducting Th, Sc and Th, Y alloys with Ce Type Journal Article
  Year 1975 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 17 Issue 12 Pages (down) 1581-1583  
  Keywords  
  Abstract Measurements of the specific heat jump ΔC at the superconducting critical temperature Tc on (Image )Ce and (Image )Ce Ce impurity, solid solution alloy systems indicate that the former systems obey the BCS law of corresponding states (LCS) characteristic of superconductors with non-magnetic impurities while the latter systems present deviations from the LCS linear relation between reduced parameters which are attributed to the development of localized moments at the Ce ions as the Y concentration increases.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes ISI:A1975AZ36600027 Approved no  
  Call Number BT @ hernan @ Serial 141  
Permanent link to this record
 
 
Author Arce, R.; de la Cruz, F.; Esquinazi, P. url  doi
openurl 
  Title Superconducting penetration depth in amorphous metals Type Journal Article
  Year 1981 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 38 Issue 12 Pages (down) 1253-1255  
  Keywords  
  Abstract We show that temperature dependent penetration depth measurements can be used to characterize the superconductive behaviour of amorphous metals.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 557  
Permanent link to this record
 
 
Author Braun, E.; Bürger, A.; Roden, B.; Sereni, J.G. url  doi
openurl 
  Title Spin glass-like behaviour of the singlet ground state system: ThTb Type Journal Article
  Year 1988 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 66 Issue 11 Pages (down) 1141-1144  
  Keywords  
  Abstract We have studied the temperature and field dependence of the magnetic susceptibility, X, on the single-ground-state Th1?nTbn system, in the 0.2 < n < 0.6 concentration range. The characteristic maximum of a spin glass transition was found at a temperature Tg, which increases linearly with the impurity concentration. As expected, the maximum of X is reduced by the increment of the applied magnetic field. The spin glass order parameter, as well as its critical exponent were evaluated by using the Sherrington-Kirkpatrick theory.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 577  
Permanent link to this record
 
 
Author Guimpel, J.; de la Cruz, F. url  doi
openurl 
  Title Electrical resistivity of amorphous Zr70Cu30 and the Kondo like model Type Journal Article
  Year 1982 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 44 Issue 7 Pages (down) 1045-1046  
  Keywords Zr70Cu30; superconductivity; electrical resistivity; ZIRCONIUM COPPER ALLOYS  
  Abstract Electrical resistivity measurements of amorphous Zr70Cu30 as a function of the concentrations of two level systems show that a Kondo like theory cannot explain the observed temperature dependence.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 540  
Permanent link to this record
 
 
Author Arce, R.; Civale, L.; Luzuriaga, J.; Guimpel, J.; de la Cruz, F. url  doi
openurl 
  Title Surface normal regions in superconducting Zr70Cu30 induced by thermal relaxation Type Journal Article
  Year 1983 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 48 Issue 12 Pages (down) 1027-1030  
  Keywords ZIRCONIUM COPPER ALLOYS – Physical Properties; SUPERCONDUCTING MATERIALS  
  Abstract Penetration depth measurements show that thermal heat treatment in amorphous Zr70Cu30 induces a normal region 5000 Å thick at the surface of ultrarapid quenched ribbons. Upper critical field measurements indicate that the new induced phase is a normal one while the rest of the sample remains as a homogeneous superconducting phase.  
  Address Centro Atómico Bariloche – Instituto Balseiro  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 00381098 (ISSN) ISBN Medium  
  Area Expedition Conference  
  Notes Export Date: 28 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Arce, R.; Centro At Approved no  
  Call Number BT @ luzuriag @ Serial 502  
Permanent link to this record
 
 
Author Castello, D.; Jaime, M.; Núñez Regueiro, M. url  doi
openurl 
  Title Thermal conductivity of high temperature superconductor TlBaCaCuO Type Journal Article
  Year 1991 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 79 Issue 11 Pages (down) 967-970  
  Keywords  
  Abstract We have measured the thermal conductivity of ceramic samples of TlBaCaCuO between 2 and 250 K. At high temperatures it follows a constant behaviour down to the superconducting transition temperature where a sudden increase of the thermal conductivity occurs, attributed to reduced phonon scattering by condensating electrons. At low temperatures a T2 law is observed, confirming the assumption that it is a common feature in most of the high temperature superconducting oxides. Phonon scattering against tunneling systems analogous to those found in amorphous solids can explain this behaviour.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 581  
Permanent link to this record
 
 
Author Durán, C.; Esquinazi, P.; Fainstein, C.; Núñez Regueiro, M. url  doi
openurl 
  Title Anomalies in the internal friction and sound velocity in YBa2Cu3O7-x and EuBa2Cu3O7-x superconductors Type Journal Article
  Year 1988 Publication Solid State Communications Abbreviated Journal Solid State Commun.  
  Volume 65 Issue 9 Pages (down) 957-961  
  Keywords  
  Abstract Internal friction Q-1 and Young Modulus sound velocity vE measurements at 1 kHz in YBa2Cu3O7?x and EuBa2Cu3O7?x polycrystalline samples reveal anomalies at the superconducting transition and at not, vert, similar37 K. The anomaly in vE at not, vert, similar90 K is accompanied by an absorption peak and is in agreement with published ultrasonic measurements, suggesting a lattice deformation at the superconducting transition.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0038-1098 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 569  
Permanent link to this record
Select All    Deselect All << 1 2 3 4 >>
List View
 | 
Citations
 | 
Details
   print
toggle visibility
Save Citations:
Export Records:
Home CQL Search  |  Library Search  |  Show Record  |  Extract Citations Help