Abstract
In a comparative study of the dissipative behavior of various classes of high-Tc superconductors in large magnetic fields, we demonstrate that materials with a large electronic anisotropy, like the Bi and Tl compounds, have intrinsically smaller pinning energies than more isotropic materials. Consequently, the highly anisotropic materials exhibit thermally assisted dissipation down to temperatures far below Tc. In spite of small pinning energies, large critical current densities Jc can be observed in the critical-state regime at T<Tcr. In this regime irradiation damage produces large changes in Jc, but only modest changes in the magnitude of the pinning energies as evidenced in the thermally activated regime. We introduce a general criterion, which denotes the temperature and magnetic-field regime in which superconductors can be applied.
| Original language | English |
|---|---|
| Pages (from-to) | 3756-3759 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 43 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jan 1991 |
| Externally published | Yes |
Fingerprint
Cite this
}
Role of anisotropy in the dissipative behavior of high-temperature superconductors. / Palstra, T. T M; Batlogg, B.; Schneemeyer, L. F.; Waszczak, J. V.
In: Physical Review B, Vol. 43, No. 4, 01.01.1991, p. 3756-3759.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Role of anisotropy in the dissipative behavior of high-temperature superconductors
AU - Palstra, T. T M
AU - Batlogg, B.
AU - Schneemeyer, L. F.
AU - Waszczak, J. V.
PY - 1991/1/1
Y1 - 1991/1/1
N2 - In a comparative study of the dissipative behavior of various classes of high-Tc superconductors in large magnetic fields, we demonstrate that materials with a large electronic anisotropy, like the Bi and Tl compounds, have intrinsically smaller pinning energies than more isotropic materials. Consequently, the highly anisotropic materials exhibit thermally assisted dissipation down to temperatures far below Tc. In spite of small pinning energies, large critical current densities Jc can be observed in the critical-state regime at T<Tcr. In this regime irradiation damage produces large changes in Jc, but only modest changes in the magnitude of the pinning energies as evidenced in the thermally activated regime. We introduce a general criterion, which denotes the temperature and magnetic-field regime in which superconductors can be applied.
AB - In a comparative study of the dissipative behavior of various classes of high-Tc superconductors in large magnetic fields, we demonstrate that materials with a large electronic anisotropy, like the Bi and Tl compounds, have intrinsically smaller pinning energies than more isotropic materials. Consequently, the highly anisotropic materials exhibit thermally assisted dissipation down to temperatures far below Tc. In spite of small pinning energies, large critical current densities Jc can be observed in the critical-state regime at T<Tcr. In this regime irradiation damage produces large changes in Jc, but only modest changes in the magnitude of the pinning energies as evidenced in the thermally activated regime. We introduce a general criterion, which denotes the temperature and magnetic-field regime in which superconductors can be applied.
UR - http://www.scopus.com/inward/record.url?scp=0041709365&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.43.3756
DO - 10.1103/PhysRevB.43.3756
M3 - Article
VL - 43
SP - 3756
EP - 3759
JO - Physical review B: Covering condensed matter and materials physics
JF - Physical review B: Covering condensed matter and materials physics
SN - 2469-9950
IS - 4
ER -