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Pregled bibliografske jedinice broj: 396249

Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals


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. (poster, međunarodna recenzija, sažetak, znanstveni)


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Naslov
Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals

Autori
Grbić, Mihael Srđan ; Barišić, Neven ; Požek, Miroslav ; Kupčić, Ivan ; Li, Yuan ; Zhao, Xudong ; Dressel, Martin ; Dulčić, Antonije ; Greven, Martin

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
429. WE-Heraeus-Seminar Microwaves for Condensed Matter Physics 2009 / Scheffler, Marc ; Dressel, Martin - Bad Honnef : Wilhelm und Else Heraeus-Stiftung, 2009

Skup
429. WE-Heraeus-Seminar Microwaves for Condensed Matter Physics 2009

Mjesto i datum
Bad Honnef, Njemačka, 05.-08.04.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
microwaves; cuprate superconductors; pseudogap; fluctuations
(microwaves; cuprate superconductors; aisotropy)

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
119-1191458-0512 - Niskodimenzionalni jako korelirani vodljivi sustavi (Barišić, Slaven, MZOS ) ( POIROT)
119-1191458-1022 - Mikrovalna istraživanja novih materijala (Požek, Miroslav, MZOS ) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb


Citiraj ovu publikaciju

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. (poster, međunarodna recenzija, sažetak, znanstveni)
Grbić, M., Barišić, N., Požek, M., Kupčić, I., Li, Y., Zhao, X., Dressel, M., Dulčić, A. & Greven, M. (2009) Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals. U: Scheffler, M. & Dressel, M. (ur.)429. WE-Heraeus-Seminar Microwaves for Condensed Matter Physics 2009.
@article{article, year = {2009}, keywords = {microwaves, cuprate superconductors, pseudogap, fluctuations}, title = {Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals}, keyword = {microwaves, cuprate superconductors, pseudogap, fluctuations}, publisher = {Wilhelm und Else Heraeus-Stiftung}, publisherplace = {Bad Honnef, Njema\v{c}ka} }
@article{article, year = {2009}, keywords = {microwaves, cuprate superconductors, aisotropy}, title = {Superconducting fluctuations and pseudogap in HgBa2CuO4+delta single crystals}, keyword = {microwaves, cuprate superconductors, aisotropy}, publisher = {Wilhelm und Else Heraeus-Stiftung}, publisherplace = {Bad Honnef, Njema\v{c}ka} }




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