Rolf Lortz

1D goes 2D: A Kosterlitz Thouless transition in superconducting arrays of 4-Angstrom carbon nanotubes (2009)

Wang, Zhe, Shi, Wu, Xie, Hang, Zhang, Ting, Wang, Ning, Tang, Zikang, ...

We report superconducting resistive transition characteristics for array(s) of coupled 4-Angstrom single wall carbon nanotubes embedded in aluminophosphate-five (AFI) zeolite. The transition was...

Phonon density of states, anharmonicity, electron-phonon coupling and possible multigap superconductivity in the clathrate superconductors Ba8Si46 and Ba24Si100: Why is Tc different in these two compounds? (2008)

Lortz, Rolf, Viennois, Romain, Petrovic, Alexander, Wang, Yuxing, Toulemonde, Pierre, Meingast, Christoph, ...

We report a detailed study of specific heat, electrical resistivity and thermal expansion in combination with inelastic neutron and inelastic X-ray scattering to investigate the origin of...

Muon spin rotation study of the ternary noncentrosymmetric superconductors Li$_2$Pd$_x$Pt$_{3-x}$B (2007)

Häfliger, Petra S., Khasanov, Rustem, Lortz, Rolf, Petrović, Alexander, Togano, Kazumasa, Baines, Chris, ...

We investigated the superconducting state of the noncentrosymmetric superconductors Li$_2$Pd$_x$Pt$_{3-x}$B with superconducting transition temperature $T_c$= 5.16(8) K ($x$=2.25), 3.56(8) K...

"Fragile superconductivity": a kinetic glass transition in the vortex matter of the high-temperature superconductor YBa2Cu3O7-d (2006)

Lortz, Rolf, Meingast, Christoph, Rykov, Alexandre I., Tajima, Setsuko

Of the many different kinds of glassy states found in nature, spin glasses and structural glasses (e.g. normal window glass) have probably received the most attention. One of the central questions...

Evolution of the specific-heat anomaly of the high-temperature superconductor YBa2Cu3O7 under influence of doping through application of pressure up to 10 GPa (2005)

Lortz, Rolf, Junod, Alain, Jaccard, Didier, Wang, Yuxing, Meingast, Christoph, Masui, Takahiko, ...

The evolution of the specific-heat anomaly in the overdoped range of a single crystal of the high-temperature superconductor YBa2Cu3O7 has been studied under influence of pressure up to 10 GPa, using...

Modulated-bath AC calorimetry using modified commercial Peltier-elements (2005)

Lortz, Rolf, Abe, Satoko, Wang, Yuxing, Bouquet, Frederic, Tutsch, Ulrich, Junod, Alain

We developed a new type of AC microcalorimeter based on a modulated-bath technique for measuring the specific heat of small microgram samples in the temperature range from 30-300 K, and tested it in...

Specific heat and magnetization of a ZrB12 single crystal: characterization of a type II/1 superconductor (2005)

Wang, Yuxing, Lortz, Rolf, Paderno, Yuriy, Filippov, Vladimir, Abe, Satoko, Tutsch, Ulrich, ...

We measured the specific heat, the magnetization, and the magnetoresistance of a single crystal of ZrB12, which is superconducting below Tc ~ 6 K. The specific heat in zero field shows a BCS-type...

Wechselspiel von 3dXY-Fluktuationen und Vortices im Hochtemperatursupraleiter YBa2Cu3Ox / (2002)

Lortz, Rolf.

Zugl.: Karlsruhe, Univ., Diss., 2002.

Wechselspiel von 3dXY-Fluktuationen und Vortices im Hochtemperatursupraleiter YBa₂CU₃O[subscript x] / (2002)

Lortz, Rolf., Forschungszentrum Karlsruhe.

At head of title: Forschungszentrum Karlsruhe, Technik und Umwelt.

Superconducting characteristics of 4-Å carbon nanotube–zeolite composite

Lortz, Rolf, Zhang, Qiucen, Shi, Wu, Ye, Jian Ting, Qiu, Chunyin, Wang, Zhe, ...

We have fabricated nanocomposites consisting of 4-Å carbon nanotubes embedded in the 0.7-nm pores of aluminophosphate-five (AFI) zeolite that display a superconducting specific heat transition at...