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Anisotropic properties, pseudogap and superconducting gap opening in Hg1201 determined by microwave measurements (CROSBI ID 548363)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Grbić M. S. ; Požek M. ; Dulčić A. ; Barišić N. Anisotropic properties, pseudogap and superconducting gap opening in Hg1201 determined by microwave measurements // Abstracts of Ampere NMR School 19.-28. June 2008., Poznan/Wierzba, Poland / Jurga, Stefan (ur.). Poznań: Adam Mieckiewicz University, 2008

Podaci o odgovornosti

Grbić M. S. ; Požek M. ; Dulčić A. ; Barišić N.

engleski

Anisotropic properties, pseudogap and superconducting gap opening in Hg1201 determined by microwave measurements

Measurements of surface impedance on optimally doped HgBa2CuO4 single crystal (Tc = 95 K) were performed using a resonant microwave method. By changing the configurations of the microwave electric and magnetic fields we observed various absorption signals - signatures of anisotropic normal state conductivity sigma(ab) and sigma(c). An external DC magnetic field was applied in two orientations: Hdc ||c and Hdc || ab , and the estimate of the upper critical field in them reveals anisotropy of the GL coherence length gamma = 10. Temperature dependence was measured up to 300 K, and a characteristic temperature T* was observed around 180 K indicating a pseudogap opening temperature. Temperature measurements in magnetic field Hdc || c reveal interesting feature of superconducting fluctuations up to 105 K.

microwaves; superconductors; anisotropy

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Podaci o prilogu

2008.

objavljeno

Podaci o matičnoj publikaciji

Abstracts of Ampere NMR School 19.-28. June 2008., Poznan/Wierzba, Poland

Jurga, Stefan

Poznań: Adam Mieckiewicz University

Podaci o skupu

Ampere NMR School

poster

19.06.2008-27.06.2008

Poznań, Poljska

Povezanost rada

Fizika