Chemically Induced Nanoscale Josephson Effects in Non-Stoichiometric High-Temperature Superconductors
| dc.creator | Sergeenkov, Sergei | |
| dc.date | 2005-09-02 | |
| dc.date.accessioned | 2026-07-07T03:06:30Z | |
| dc.date.available | 2026-07-07T03:06:30Z | |
| dc.description | This paper reviews some of the recently suggested (by the author) novel effects expected to occur in intrinsically granular non-stoichiometric material modeled by 2D Josephson junction arrays which are created by a regular 2D network of twin-boundary dislocations with strain fields acting as an insulating barrier between hole-rich domains in underdoped crystals. In Section 2 we consider phase-related magnetization effects, including Josephson chemomagnetism (chemically induced magnetic moment in zero applied magnetic field) and its influence on a low-field magnetization (chemically induced PME), and magnetoconcentration effect (creation of extra oxygen vacancies in applied magnetic field) and its influence on a high-field magnetization (chemically induced analog of "fishtail" anomaly). Section 3 addresses charge-related phenomena which are actually dual to the chemomagnetic effects described in Section 2. More specifically, we discuss a possible existence of a non-zero electric polarization (chemomagnetoelectic effect) and the related change of the charge balance in intrinsically granular non-stoichiometric material under the influence of an applied magnetic field. In particular, we predict an anomalous low-field magnetic behavior of the effective junction charge and concomitant magnetocapacitance in paramagnetic Meissner phase and a charge analog of "fishtail" anomaly at high magnetic fields as well as field-dependent weakening of the chemically-induced Coulomb blockade. | |
| dc.description | 16 pages, 8 figures; invited paper for the Special Golden Jubilee volume of Studies of High-Temperature Superconductors, ed. A. Narlikar | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0509057 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0509057 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/26829 | |
| dc.subject | Superconductivity | |
| dc.title | Chemically Induced Nanoscale Josephson Effects in Non-Stoichiometric High-Temperature Superconductors | |
| dc.type | text |