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74 papers · 1 filter
Fermi liquid behaviour in an underdoped high Tc superconductor
Suchitra E. Sebastian, N. Harrison, M. M. Altarawneh +4
We use magnetic quantum oscillations in the underdoped high Tc superconductor YBa_2Cu_3O_(6+x) (x=0.56) measured over a broad range of temperatures 100 mK<T<18 K to extract the for…
Magnetic field induced quantum phase transition of the antiferromagnet
S. Nellutla, M. Pati, Y. -J. Jo +11
The magnetic properties of alkali-metal peroxychromate KNaCrO are governed by the pentavalent chromium cation, Cr. Specific heat, magnetocalorimetry, ac ma…
Disorder Induced Effects on the Critical Current Density of Iron Pnictide BaFe_1.8 Co_0.2 As_2 single crystals
M. Zehetmayer, M. Eisterer, H. W. Weber +6
Investigating the role of disorder in superconductors is an essential part of characterizing the fundamental superconducting properties as well as assessing potential applications…
Aging and memory in a two-dimensional electron system in Si
J. Jaroszynski, Dragana Popovic
The relaxations of conductivity after a temporary change of carrier density n_s during the waiting time t_w have been studied in a strongly disordered two-dimensional electron syst…
Suppression of the critical temperature of superconducting NdFeAs(OF) single crystals by Kondo-like defect sites induced by alpha-particle irradiation
C. Tarantini, M. Putti, A. Gurevich +8
We report a comprehensive investigation of the suppression of the critical temperature Tc of NdFeAs(OF) single crystal by alpha-particle irradiation. Our data indicate that irradia…
Complex dynamics in coevolution models with ratio-dependent functional response
Per Arne Rikvold
We explore the complex dynamical behavior of two simple predator-prey models of biological coevolution that on the ecological level account for interspecific and intraspecific comp…