Abstract
We present tunneling measurements on an InN nanobelt which shows signatures of superconductivity. Superconducting transition takes place at temperature of 1.3K and the critical magnetic field is measured to be about 5.5kGs. The energy gap extrapolated to absolute temperature is about 110μeV. As the magnetic field is decreased to cross the critical magnetic field, the device shows a huge zero-bias magnetoresistance ratio of about 400%. This is attributed to the suppression of quasiparticle subgap tunneling in the presence of superconductivity. The measured magnetic-field and temperature dependence of the superconducting gap agree well with the reported dependences for conventional metallic superconductors.
| Original language | English |
|---|---|
| Article number | 012155 |
| Journal | AIP Advances |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2012 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Magnetic-field and temperature dependence of the energy gap in InN nanobelt. / Aravind, K.; Su, Y. W.; Chung, D. S.; Kuo, Watson; Wu, Cen-Shawn; Chang-Liao, K. S.; Chen, K. H.; Chen, L. C.; Chen, C. D.
In: AIP Advances, Vol. 2, No. 1, 012155, 01.12.2012.Research output: Contribution to journal › Article
TY - JOUR
T1 - Magnetic-field and temperature dependence of the energy gap in InN nanobelt
AU - Aravind, K.
AU - Su, Y. W.
AU - Chung, D. S.
AU - Kuo, Watson
AU - Wu, Cen-Shawn
AU - Chang-Liao, K. S.
AU - Chen, K. H.
AU - Chen, L. C.
AU - Chen, C. D.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - We present tunneling measurements on an InN nanobelt which shows signatures of superconductivity. Superconducting transition takes place at temperature of 1.3K and the critical magnetic field is measured to be about 5.5kGs. The energy gap extrapolated to absolute temperature is about 110μeV. As the magnetic field is decreased to cross the critical magnetic field, the device shows a huge zero-bias magnetoresistance ratio of about 400%. This is attributed to the suppression of quasiparticle subgap tunneling in the presence of superconductivity. The measured magnetic-field and temperature dependence of the superconducting gap agree well with the reported dependences for conventional metallic superconductors.
AB - We present tunneling measurements on an InN nanobelt which shows signatures of superconductivity. Superconducting transition takes place at temperature of 1.3K and the critical magnetic field is measured to be about 5.5kGs. The energy gap extrapolated to absolute temperature is about 110μeV. As the magnetic field is decreased to cross the critical magnetic field, the device shows a huge zero-bias magnetoresistance ratio of about 400%. This is attributed to the suppression of quasiparticle subgap tunneling in the presence of superconductivity. The measured magnetic-field and temperature dependence of the superconducting gap agree well with the reported dependences for conventional metallic superconductors.
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U2 - 10.1063/1.3691830
DO - 10.1063/1.3691830
M3 - Article
VL - 2
JO - AIP Advances
JF - AIP Advances
SN - 2158-3226
IS - 1
M1 - 012155
ER -