Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals (CROSBI ID 548297)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Grbić, Mihael Srđan ; Barišić, Neven ; Požek, Miroslav ; Kupčić, Ivan ; Li, Yuan ; Zhao, Xudong ; Dressel, Martin ; Dulčić, Antonije ; Greven, Martin
engleski
Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals
New approach to microwave measurements of ab- and c-axes conductivity in nearly optimally doped HgBa2CuO4+delta single crystals evidence three characteristic temperatures. The pseudogap opens at T* approx 170K which is almost twice the superconducting critical temperature Tc = 94.3 K. The fluctuation regime of preformed Cooper pairs is observed above Tc in the c-axis conductivity, in particular by its magnetic-field dependence. It is confined to a narrow temperature range Tc < T < T' approx 105 K, far below T*, which enables unambiguous separation of T* and T'. Hence, our results support the distinction between the pseudogap formation and effects of the superconducting ordering.
microwaves; cuprate superconductors; aisotropy
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
Podaci o prilogu
2009.
objavljeno
Podaci o matičnoj publikaciji
429. WE-Heraeus-Seminar Microwaves for Condensed Matter Physics 2009
Scheffler, Marc ; Dressel, Martin
Bad Honnef: Wilhelm und Else Heraeus-Stiftung
Podaci o skupu
429. WE-Heraeus-Seminar Microwaves for Condensed Matter Physics 2009
poster
05.07.2009-08.07.2009
Bad Honnef, Njemačka