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Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals (CROSBI ID 548297)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Grbić, Mihael Srđan ; Barišić, Neven ; Požek, Miroslav ; Kupčić, Ivan ; Li, Yuan ; Zhao, Xudong ; Dressel, Martin ; Dulčić, Antonije ; Greven, Martin Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals // 429. WE-Heraeus-Seminar Microwaves for Condensed Matter Physics 2009 / Scheffler, Marc ; Dressel, Martin (ur.). Bad Honnef: Wilhelm und Else Heraeus-Stiftung, 2009

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

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Podaci o prilogu

2009.

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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

Povezanost rada

Fizika