T. Penney

IBM (United States) — United States

Physics and Astronomy · Physical Sciences

26h-index4.1kcitations82works0.02yr avg
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Research Topics

Rare-earth and actinide compounds(29), Physics of Superconductivity and Magnetism(22), Magnetic and transport properties of perovskites and related materials(15), Solid-state spectroscopy and crystallography(11), Advanced Condensed Matter Physics(10)

Publications82 total

Low temperature magnetoresistance of the persistent photoconductor Cd0.9Mn0.1Te:In
Journal of Crystal Growth·1996· 10 cited
Magnetic polarons in concentrated and diluted magnetic semiconductors
Cambridge University Press eBooks·1995· 2 cited
Hopping Conduction Near the Metal-Insulator Transition in CdMnTe:In and Evidence for a Magnetic Hard Gap in the Density of States
International Journal of Modern Physics B·1994· 1 cited
Local magnetization and magnetotransport in magnetic semiconductors
Physica B Condensed Matter·1994· 1 cited
Evidence for a magnetic hard gap in the density of states of a magnetic semiconductor near the metal insulator transition (abstract)
Journal of Applied Physics·1993
Partial Ferromagnetic Order in p-Type (In, Mn) as Diluted Magnetic III-V Semiconductors
Materials science forum·1993· 1 cited
Band tails and the insulator-metal transition in the persistent photoconductor Cd1-xMnxTe:In
Solid State Communications·1992· 51 cited
Low-temperature transport properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cd</mml:mi></mml:mrow><mml:mrow><mml:mn>0.91</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi></mml:mrow><mml:mrow><mml:mn>0.09</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Te:In and evidence for a magnetic hard gap in the density of states
Physical Review Letters·1992· 73 cited
Magnetotransport properties of<i>p</i>-type (In,Mn)As diluted magnetic III-V semiconductors
Physical Review Letters·1992· 1.1k cited
Diluted magnetic III–V semiconductor structures
Surface Science·1992· 32 cited
The Influence of Local Magnetization on Transport in Cd<sub>0.91</sub>Mn<sub>0.09</sub>Te:In
MRS Proceedings·1992· 1 cited
The influence of local magnetization of magnetotransport in Cd0.92Mn0.08Te:In (invited) (abstract)
Journal of Applied Physics·1991· 1 cited
Hole, T c relationships in superconducting oxides
1990· 34 cited
Hole concentration, Hall number, and disorder in compensation doped NdBa 2 Cu 3 O y
Physica C Superconductivity·1989· 14 cited
Hole concentrations, Hall number, and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>T</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>relationships in substituted<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">Y</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ba</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
Physical review. B, Condensed matter·1989· 155 cited
Hole Concentration - T<sub>c</sub> Relationships for Nd and Zn Substitutions in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub>
MRS Proceedings·1989
Observation of a coherent quasiparticle band in the periodic heavy fermion system CeCu6
Journal of Magnetism and Magnetic Materials·1988· 17 cited
Comparison of Hall Number, Hole Concentration and <font>T</font><sub><font>c</font></sub> in Nd and Zn Substituted <font>YBa</font><sub>2</sub><font>Cu</font><sub>3</sub><font>O</font><sub><font>y</font></sub> Superconductors
International Journal of Modern Physics B·1988· 2 cited
Strongly anisotropic electrical properties of single-crystal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>7</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
Physical review. B, Condensed matter·1988· 179 cited
Low-temperature specific heat of single-crystal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>7</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="normal">δ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
Physical review. B, Condensed matter·1988· 46 cited
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Frequent Co-authors

F. Holtzberg(20), S. von Molnár(12), M. W. Shafer(10), B. L. Olson(5), R. Tournier(5), T. S. Plaskett(4), R. L. Melcher(4), Debra L. Kaiser(3), S. Etemad(3), E. M. Engler(3), B. A. Scott(3), B. Barbara(3), Ian Terry(3), P. Becla(3), Z. Fisk(3), P. Haen(3), F. Lapierre(3), H. Munekata(2), A. W. Kleinsasser(2), R. L. Greene(2)