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
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