Absence of density of states transfer observed by interlayer tunneling spectroscopy in magnetic fields forBi2Sr2CaCu2O8+δ

Autor:	Minoru Suzuki, Yoshiharu Yamada, Takao Watanabe, Kenkichi Anagawa
Rok vydání:	2003
Předmět:	Superconductivity Physics Condensed matter physics Condensed Matter::Superconductivity Quasiparticle Density of states Conductance Pseudogap Spectroscopy Quantum tunnelling Magnetic field
Zdroj:	Physical Review B. 67
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.67.214513
Popis:	Using short-pulse interlayer tunneling spectroscopy, the superconducting gap and the pseudogap structure are measured both in the absence and presence of magnetic fields for slightly overdoped Bi 2 Sr 2 CaCu 2 O 8 + δ . It is found, together with characteristic field-dependent behavior of the superconducting conductance peak, that the tunneling conductance within the superconducting gap remains almost unchanged under magnetic fields up to 9 T. This implies that the transfer of the quasiparticle density of states associated with the superconducting transition is absent in this system, suggesting unconventional pairing interaction or a field-induced ordered state that competes with superconductivity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::77373d4959f100153403cf58d23e21c6 https://doi.org/10.1103/physrevb.67.214513 Zobrazit plný text záznamu