Superconducting Density of States in B-Doped Diamond

• Authors: O. Onufriienko , T. Samuely , G. Zhang , J. Vanacken , Zheng Xu , P. May , P. Szabó , V. Moshchalkov , P. Samuely
• Languages of publication: EN

Abstracts

EN

In the presented work, we investigated the superconducting boron doped diamond polycrystalline film prepared by chemical vapor deposition by means of scanning tunneling microscopy/spectroscopy. Differential conductance spectra measured at various temperatures were used to obtain the values of superconducting critical temperature and energy gap. Comparing various theoretical models fitted to the differential conductance spectra measured at 0.5 K suggests weak pair breaking. However, this cannot account for the high 2Δ/(k_{B}T_{C}) ratio, which therefore indicates strong coupling.

Keywords

EN

74.70.Wz; 74.62.En; 74.55.+v

Discipline

• 74.62.En: Effects of disorder
• 74.55.+v: Tunneling phenomena: single particle tunneling and STM
• 74.70.Wz: Carbon-based superconductors

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 1033-1035

Dates

published

2017-04

Contributors

author

O. Onufriienko

• Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
• Faculty of Science, P.J. Šafárik University, 040 01 Košice, Slovakia

author

T. Samuely

• Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
• Faculty of Science, P.J. Šafárik University, 040 01 Košice, Slovakia

author

G. Zhang

• INPAC-Institute for Nanoscale Physics and Chemistry, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee, Belgium

author

J. Vanacken

• INPAC-Institute for Nanoscale Physics and Chemistry, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee, Belgium

author

Zheng Xu

• School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ 85281, USA

author

P. May

• School of Chemistry, University of Bristol, Bristol BS8 1TS, UK

author

P. Szabó

• Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
• Faculty of Science, P.J. Šafárik University, 040 01 Košice, Slovakia

author

V. Moshchalkov

• INPAC-Institute for Nanoscale Physics and Chemistry, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee, Belgium

author

P. Samuely

• Centre of Low Temperature Physics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia
• Faculty of Science, P.J. Šafárik University, 040 01 Košice, Slovakia

References

• [1] A.W.C. Williams, E.C. Lightowlers, A.T. Collins, J. Phys. C 3, 1727 (1970), doi: 10.1088/0022-3719/3/8/011
• [2] E.A. Ekimov, V.A. Sidorov, E.D. Bauer, N.N. Mel'nik, N.J. Curro, J.D. Thompson, S.M. Stishov, Nature 428, 542 (2004), doi: 10.1038/nature02449
• [3] Y. Takano, M. Nagao, I. Sakaguchi, M. Tachiki, T. Hatano, K. Kobayashi, H. Umezawa, H. Kawarada, Appl. Phys. Lett. 85, 2851 (2004), doi: 10.1063/1.1802389
• [4] E. Bustarret, C. Marcenat, P. Achatz, J. Kaĉmarĉik, F. Lévy, A. Huxley, L. Ortéga, E. Bourgeois, X. Blas, D. Débarre, J. Boulmer, Nature (London) 444, 465 (2006), doi: 10.1038/nature05340
• [5] Z.A. Ren, J. Kato, T. Muranaka, J. Akimitsu, M. Kriener, Y. Maeno, J. Phys. Soc. Jpn. 76, 103710 (2007), doi: 10.1143/JPSJ.76.103710
• [6] T. Herrmannsdörfer, V. Heera, O. Ignatchik, M. Uhlarz, A. Mücklich, M. Posselt, H. Reuther, B. Schmidt, K.H. Heinig, W. Skorupa, M. Voelskow, C. Wündisch, R. Skrotzki, M. Helm, J. Wosnitza, Phys. Rev. Lett. 102, 217003 (2009), doi: 10.1103/PhysRevLett.102.217003
• [7] E. Bustarret, J. Kačmarčik, C. Marcenat, E. Gheeraert, C. Cytermann, J. Marcus, T. Klein, Phys. Rev. Lett. 93, 237005 (2004), doi: 10.1103/PhysRevLett.93.237005
• [8] P.W. May, W.J. Ludlow, M. Hannaway, P.J. Heard, J.A. Smith, K.N. Rosser, Diamond Relat. Mater. 17, 105 (2008), doi: 10.1016/j.diamond.2007.11.005
• [9] J.G. Rodrigo, H. Suderow, S. Vieira, E. Bascones, F. Guinea, J. Phys. Condens. Matter 16, R1151 (2004), doi: 10.1088/0953-8984/16/34/R01
• [10] T. Samuely, P. Szabó, V. Komanický, J.G. Rodrigo, S. Vieira, P. Samuely, Acta Phys. Pol. A 118, 1038 (2010), doi: 10.12693/APhysPolA.118.1038
• [11] G. Zhang, S. Turner, E.A. Ekimov, J. Vanacken, M. Timmermans, T. Samuely, V.A. Sidorov, S.M. Stishov, Y. Lu, B. Deloof, B. Goderis, G. Van Tendeloo, J. Van de Vondel, V.V. Moshchalkov, Adv. Mater. 26, 2034 (2014), doi: 10.1002/adma.201304667
• [12] B.L. Willems, V.H. Dao, J. Vanacken, L.F. Chibotaru, V.V. Moshchalkov, I. Guillamón, H. Suderow, S. Vieira, S.D. Janssens, O.A. Williams, K. Haenen, P. Wagner, Phys. Rev. B 80, 224518 (2009), doi: 10.1103/PhysRevB.80.224518
• [13] F. Dahlem, P. Achatz, O.A. Williams, D. Araujo, E. Bustarret, H. Courtois, Phys. Rev. B 82, 033306 (2010), doi: 10.1103/PhysRevB.82.033306
• [14] T. Nishizaki, Y. Takano, M. Nagao, T. Takenouchi, H. Kawarada, N. Kobayashi, J. Phys. Chem. Solids 69, 3027 (2008), doi: 10.1016/j.jpcs.2008.06.011
• [15] B. Sacépé, C. Chapelier, C. Marcenat, J. Kačmarčik, T. Klein, M. Bernard, E. Bustarret, Phys. Rev. Lett. 96, 097006 (2006), doi: 10.1103/PhysRevLett.96.097006
• [16] J. Bardeen, L.N. Cooper, J.R. Schrieffer, Phys. Rev. 108, 1175 (1957), doi: 10.1103/PhysRev.108.1175
• [17] R.C. Dynes, V. Narayanamurti, J.P. Garno, Phys. Rev. Lett. 41, 1509 (1978), doi: 10.1103/PhysRevLett.41.1509
• [18] R.D. Parks, Superconductivity, Vol. 1 and 2, Marcel Dekker, New York 1969, p. 1035
• [19] A.A. Abrikosov, L.P. Gor'kov, Sov. Phys. JETP 12, 1243 (1961)
• [20] M. Assig, M. Etzkorn, A. Enders, W. Stiepany, C.R. Ast, K. Kern, Rev. Sci. Instrum. 84, 033903 (2013), doi: 10.1063/1.4793793

Identifiers

DOI

10.12693/APhysPolA.131.1033