New experimental criterion of the Berezinskii-Kosterlitz-Thouless transition

Autor:	M. A. Vasyutin, N. D. Kuz’michev, Aleksander I. Golovashkin
Rok vydání:	2008
Předmět:	Condensed Matter::Quantum Gases Physics Condensed matter physics Biasing Electronic Optical and Magnetic Materials law.invention Kosterlitz–Thouless transition law Condensed Matter::Superconductivity Excited state Harmonic Cuprate Alternating current Independence (probability theory) Voltage
Zdroj:	Bulletin of the Lebedev Physics Institute. 35:286-289
ISSN:	1934-838X 1068-3356
DOI:	10.3103/s1068335608090066
Popis:	Based on the experimental study of YBa2Cu3O7−x single crystal nonlinearity near T c , a new criterion for observing the Berezinskii-Kosterlitz-Thouless (BKT) transition in cuprate HTSC compounds was proposed. The criterion consists in the existence of the maximum in the dependence of the voltage of the second harmonic of the sample response signal excited by alternating current on the direct bias current. It was shown that the position of the second harmonic maximum is independent of temperatures near T c , which is consistent with the BKT transition independence of the measuring current.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::838ee3fe53e52df829dce6c71fb76fe5 https://doi.org/10.3103/s1068335608090066 Zobrazit plný text záznamu Full text from SpringerLink