Study of Mg B2 IPb tunnel junctions on MgO (211) substrates

Ke Chen; Y. Cui; Qi Li; C. G. Zhuang; Zi Kui Liu; X. X. Xi

doi:10.1063/1.2956414

Study of Mg B2 IPb tunnel junctions on MgO (211) substrates

Ke Chen, Y. Cui, Qi Li, C. G. Zhuang, Zi Kui Liu, X. X. Xi

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25 Scopus citations

Abstract

Mg B2 insulatorPb tunnel junctions have been made using Mg B2 films on MgO (211) substrates. The c axis of the bottom electrode Mg B2 film, parallel to the MgO [111] direction, was tilted with respect to the film normal, exposing the ab planes for electron tunneling. Tunneling contributions from both the and π bands were present in the tunneling spectra. The temperature and the magnetic field dependences of both gaps were studied, shedding light on the two-gap properties of Mg B2.

Original language	English (US)
Article number	012502
Journal	Applied Physics Letters
Volume	93
Issue number	1
DOIs	https://doi.org/10.1063/1.2956414
State	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2956414

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title = "Study of Mg B2 IPb tunnel junctions on MgO (211) substrates",

abstract = "Mg B2 insulatorPb tunnel junctions have been made using Mg B2 films on MgO (211) substrates. The c axis of the bottom electrode Mg B2 film, parallel to the MgO [111] direction, was tilted with respect to the film normal, exposing the ab planes for electron tunneling. Tunneling contributions from both the and π bands were present in the tunneling spectra. The temperature and the magnetic field dependences of both gaps were studied, shedding light on the two-gap properties of Mg B2.",

author = "Ke Chen and Y. Cui and Qi Li and Zhuang, {C. G.} and Liu, {Zi Kui} and Xi, {X. X.}",

note = "Funding Information: We would like to thank John Rowell, Alex Koshelev and Arsen Soukiassian for helpful discussions. The work is partially funded by ONR under Grant No. N00014-07-1-0079 (X.X.X.) and by NSF under Grant Nos. DMR-0405502 (Q.L.), and DMR-0514592 (Z.K.L.). The authors acknowledge use of facilities at the PSU Site of the NSF NNIN under Agreement No. 0335765.",

year = "2008",

doi = "10.1063/1.2956414",

language = "English (US)",

volume = "93",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Study of Mg B2 IPb tunnel junctions on MgO (211) substrates

AU - Chen, Ke

AU - Cui, Y.

AU - Li, Qi

AU - Zhuang, C. G.

AU - Liu, Zi Kui

AU - Xi, X. X.

N1 - Funding Information: We would like to thank John Rowell, Alex Koshelev and Arsen Soukiassian for helpful discussions. The work is partially funded by ONR under Grant No. N00014-07-1-0079 (X.X.X.) and by NSF under Grant Nos. DMR-0405502 (Q.L.), and DMR-0514592 (Z.K.L.). The authors acknowledge use of facilities at the PSU Site of the NSF NNIN under Agreement No. 0335765.

PY - 2008

Y1 - 2008

N2 - Mg B2 insulatorPb tunnel junctions have been made using Mg B2 films on MgO (211) substrates. The c axis of the bottom electrode Mg B2 film, parallel to the MgO [111] direction, was tilted with respect to the film normal, exposing the ab planes for electron tunneling. Tunneling contributions from both the and π bands were present in the tunneling spectra. The temperature and the magnetic field dependences of both gaps were studied, shedding light on the two-gap properties of Mg B2.

AB - Mg B2 insulatorPb tunnel junctions have been made using Mg B2 films on MgO (211) substrates. The c axis of the bottom electrode Mg B2 film, parallel to the MgO [111] direction, was tilted with respect to the film normal, exposing the ab planes for electron tunneling. Tunneling contributions from both the and π bands were present in the tunneling spectra. The temperature and the magnetic field dependences of both gaps were studied, shedding light on the two-gap properties of Mg B2.

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ER -

Study of Mg B2 IPb tunnel junctions on MgO (211) substrates

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