Superconductivity Study of GaN Highly Doped by Transition Metals

• Authors: J. Gosk , M. Boćkowski , M. Tokarczyk , G. Kowalski , A. Twardowski
• Languages of publication: EN

Abstracts

EN

GaN:Cr and GaN:Fe single crystals as well as GaN:Mn micropowders highly doped by transition metals were grown to investigate low temperature superconductivity. Magnetic measurements revealed type I superconductivity with T_{C} ≈ 6 K and H_{C} ≈ 600 Oe, identical for all compounds and also identical to that observed before in GaP:Cr and GaAs:Cr. The presence of amorphous inclusions of gallium may explain existing superconductivity as a result of a phase transition leading to β-Ga during cooling down of the sample. Since the observed parameters are close to those characteristic for superconducting Ga(II) this possibility could not be ruled out.

Keywords

EN

74.25.Ha; 74.70.-b; 74.25.Dw; 75.50.-y; 61.72.Dd; 81.10.Dn

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 75.50.-y: Studies of specific magnetic materials
• 81.10.Dn: Growth from solutions
• 61.72.Dd: Experimental determination of defects by diffraction and scattering
• 74.70.-b: Superconducting materials other than cuprates(for cuprates, see 74.72.-h; for superconducting films, see 74.78.-w)
• 74.25.Dw: Superconductivity phase diagrams

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 5
• Pages: 877-880

Dates

published

2013-11

Contributors

author

J. Gosk

• Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland

author

M. Boćkowski

• High Pressure Research Centre UNIPRESS, PAS, Sokołowska 29/37, 01-142 Warsaw, Poland

author

M. Tokarczyk

• Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

G. Kowalski

• Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

A. Twardowski

• Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

References

• [1] N.E. Alekseevskii, G.V. Samsonov, O.I. Shulishova, [Sov. Phys. JETP-USSR 17, 950 (1963)]
• [2] I.V. Berman, N.B. Brandt, V.I. Sidorov, Sov. Phys.-JETP Lett. 14, 11 (1971)];
• [2a] L.F. Vereshchagin, E.N. Yakovlev, Yu.A. Timofeev, B.V. Vinogradov, [Sov. Phys.-JETP Lett. 26, 55 (1977)]
• [3] A. Rabenau, T.J. Berben, Phys. Lett. 12, 167 (1964)
• [4] V.S. Kravchenko, M.Z. Graifer, M.A. Starikov, A.G. Klimenko, Bull. Acad. Sci. USSR, Inorg. Mater. 18, 1105 (1982)]
• [5] A.J. Zaleski, M. Nyk, W. Strek, Appl. Phys. Lett. 90, 042511 (2007)
• [6] J.B. Gosk, R. Puzniak, G. Strzelecka, A. Materna, A. Hruban, A. Wisniewski, A. Szewczyk, G. Kowalski, K. Korona, M. Kaminska, A. Twardowski, Supercond. Sci. Technol. 21, 065019 (2008)
• [6a] J.B. Gosk, G. Strzelecka, G. Kowalski, A. Hruban, M. Kamińska, A. Twardowski, J. Gronkowski, Acta Phys. Pol. A 110, 189 (2006)
• [7] M. Zając, J. Gosk, E. Grzanka, S. Stelmakh, M. Palczewska, A. Wysmołek, K. Korona, M. Kamińska, A. Twardowski, J. Alloys Comp. 456, 324 (2008)
• [8] M. Zając, Ph.D. Thesis, University of Warsaw, 2007
• [9] S. Krukowski, M. Bockowski. B. Lucznik, I. Grzegory, S. Porowski, T. Suski, Z. Romanowski, J. Phys., Condens Matter 13, 8881 (2001)
• [10] D.K. Bowen, B.K. Tanner, in: X-ray Metrology in Semiconductor Manufacturing, CRC-Taylor & Francis, Boca Raton 2006, p. 57
• [11] K. Wokulska, in: The precise measurement of lattice parameters and their application to structure investigation of solid solutions crystals, Wydawnictwo Uniwersytetu Śląskiego, Katowice 1997, p. 43 (in Polish)
• [12] N.E. Phillips, Phys. Rev. 134, A385 (1964)
• [13] D.R. Lide, Handbook of Chemistry and Physics, 71th ed., Chemical Rubber, Cleveland 1991
• [14] H. Parr, J. Feder, Phys. Rev. B 7, 166 (1973)
• [15] R. Flach, C. Palmy, Phys. Lett. A 29, 545 (1969)

Identifiers

DOI

10.12693/APhysPolA.124.877