Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Bruehwiler, M."'
Autor:
Schulze, T. F., Bruehwiler, M., Haefliger, P. S., Kazakov, S. M., Niedermayer, Ch., Mattenberger, K., Karpinski, J., Batlogg, B.
In this study an extended low energy phase diagram for NaxCoO2 is experimentally established with emphasis on the high x range. It is based on systematic heat capacity studies on both polycrystalline and single crystalline samples and on uSR measurem
Externí odkaz:
http://arxiv.org/abs/0808.1697
Publikováno v:
Phys. Rev. B 73, 094518 (2006) [http://link.aps.org/abstract/PRB/v73/e094518]
To assess electron correlation and electron-phonon coupling in the recently discovered beta-pyrochlores KOs2O6 and RbOs2O6, we have performed specific heat measurements in magnetic fields up to 14 T. We present data from high quality single crystalli
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602579
Heat capacity measurements on the recently discovered geometrically frustrated beta-pyrochlore superconductor RbOs2O6 (Tc=6.4 K) yield a Sommerfeld coefficient of 44 mJ/(molf.u. K^2). This is about 4 times larger than the one found in band structure
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601581
To elucidate the low-energy excitation spectrum of correlated electrons on a 2D triangular lattice, we have studied the electrical resistance and specific heat down to 0.5 K and in magnetic fields up to 14 T, in NaxCoO2 samples with a Na content rang
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601580
Publikováno v:
Phys. Rev. B 71, 214517 (2005) [http://link.aps.org/abstract/PRB/v71/e214517]
We develop a general procedure for the analysis of bulk thermodynamic data of a superconductor for samples containing a metallic non-superconducting second phase. The method is based on the condensation energy and it allows the extraction of the intr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502125
Publikováno v:
Supercond. Sci. Technol. 17 (2004) 1169-1172
RbOs2O6, the third superconducting pyrochlore oxide (known so far), has been synthesized by encapsulation and by high pressure techniques. Suitable post chemical treatment of the as-prepared sample allowed us to eliminate the impurity phases. Bulk su
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403588
Publikováno v:
Phys. Rev. B 70, 020503(R) (2004) [http://link.aps.org/abstract/PRB/v70/e020503]
We report the basic thermodynamic properties of the new geometrically frustrated beta-pyrochlore bulk superconductor RbOs2O6 with a critical temperature Tc = 6.4 K. Specific heat measurements are performed in magnetic fields up to 12 T. The electroni
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403526
Thermodynamic and transport measurements on NaxCoO2 (x ~ 0.7-0.75) over a wide temperature range reveal a strongly enhanced low energy excitation spectrum. The zero-field specific heat and resistance at low temperature are proportional to T^n with n<
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309311
Autor:
Brühwiler, M., Schulze, T., Kazakov, S.M., Bukowski, Z., Puzniak, R., Zhigadlo, N.D., Karpinski, J., Batlogg, B.
Publikováno v:
In Physica C: Superconductivity and its applications 1 September 2007 460-462 Part 1:62-65
Publikováno v:
In Physica B: Physics of Condensed Matter 2006 378:630-631