Abstract
We report on the study of the electronic anisotropy of the MgB2 superconductor using the in-plane resistivity measurements in the magnetic field applied perpendicular and parallel to Mg and B planes of MgB2 single crystals. The results show the temperature dependent anisotropy of the upper critical field with the anisotropy ratio γ = Hc2∥/Hc2⊥ increasing from 2.2 close to Tc up to about 3 below 30 K. Our estimation of the in-plane and out-of-plane coherence length of about ξab(0) = 68 Å and ξc(0) = 23 Å and the electronic mean-free path lab = 240 ̊, and lc = 60 ̊, respectively, indicates MgB2 single crystal approaches the clean limit type-II superconductor.
| Original language | English |
|---|---|
| Article number | 140501 |
| Pages (from-to) | 1405011-1405014 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 14 |
| Publication status | Published - 2002 Apr 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Anisotropic superconducting properties of MgB2 single crystals probed by in-plane electrical transport measurements. / Eltsev, Yu; Lee, S.; Nakao, K.; Chikumoto, N.; Tajima, S.; Koshizuka, N.; Murakami, Masato.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 14, 140501, 01.04.2002, p. 1405011-1405014.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Anisotropic superconducting properties of MgB2 single crystals probed by in-plane electrical transport measurements
AU - Eltsev, Yu
AU - Lee, S.
AU - Nakao, K.
AU - Chikumoto, N.
AU - Tajima, S.
AU - Koshizuka, N.
AU - Murakami, Masato
PY - 2002/4/1
Y1 - 2002/4/1
N2 - We report on the study of the electronic anisotropy of the MgB2 superconductor using the in-plane resistivity measurements in the magnetic field applied perpendicular and parallel to Mg and B planes of MgB2 single crystals. The results show the temperature dependent anisotropy of the upper critical field with the anisotropy ratio γ = Hc2∥/Hc2⊥ increasing from 2.2 close to Tc up to about 3 below 30 K. Our estimation of the in-plane and out-of-plane coherence length of about ξab(0) = 68 Å and ξc(0) = 23 Å and the electronic mean-free path lab = 240 ̊, and lc = 60 ̊, respectively, indicates MgB2 single crystal approaches the clean limit type-II superconductor.
AB - We report on the study of the electronic anisotropy of the MgB2 superconductor using the in-plane resistivity measurements in the magnetic field applied perpendicular and parallel to Mg and B planes of MgB2 single crystals. The results show the temperature dependent anisotropy of the upper critical field with the anisotropy ratio γ = Hc2∥/Hc2⊥ increasing from 2.2 close to Tc up to about 3 below 30 K. Our estimation of the in-plane and out-of-plane coherence length of about ξab(0) = 68 Å and ξc(0) = 23 Å and the electronic mean-free path lab = 240 ̊, and lc = 60 ̊, respectively, indicates MgB2 single crystal approaches the clean limit type-II superconductor.
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M3 - Article
AN - SCOPUS:0000774368
VL - 65
SP - 1405011
EP - 1405014
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 14
M1 - 140501
ER -