Current noise in MgB2 superconducting thin films

被引：0

作者：

Rajteri, M

Gandini, C

Monticone, E

Portesi, C

Masoero, A

Boveri, C

Mazzetti, P

机构：

[1] Ist Elettrotecnico Nazl Galileo Ferraris, Settore Fotometria, I-10135 Turin, Italy

[2] Politecn Torino, INFM, Unita Ric, I-10129 Turin, Italy

[3] Univ Piemonte Orientale, Dip Sci & Tecnol Avanzate, I-15100 Alessandria, Italy

[4] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 520卷 / 1-3期

关键词：

MgB2; noise; thin film; superconductivity;

D O I：

10.1016/j.nima.2003.11.265

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In this paper we present some experimental results concerning the current noise produced during the resistive transition in MgB2 thin films. Preliminary investigations evidenced the presence of electrical noise whose power spectrum has a region of the 1/f" type with n similar to 3. We suggest that the noise may originate from abrupt rearrangement of the current distribution inside the specimen during the percolative process of a diphasic system. Experimental measurements of the spectral components of the current noise taken during the resistive transition will be given and discussed. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：351 / 353

页数：3

共 3 条

[1] Current noise In high Tc granular superconductors under nonstationary conditions of current and magnetic field [J].

Mazzetti, P ;

Tura, P ;

Masoero, A ;

Stepanescu, A .

NOISE AS A TOOL FOR STUDYING MATERIALS, 2003, 5112 :331-337

[2]

MAZZETTI P, 2002, PHYS REV B, V65

[3] Percolative superconductivity in Mg1-xB2 -: art. no. 167003 [J].

Sharma, PA ;

Hur, N ;

Horibe, Y ;

Chen, CH ;

Kim, BG ;

Guha, S ;

Cieplak, MZ ;

Cheong, SW .

PHYSICAL REVIEW LETTERS, 2002, 89 (16) :167003/1-167003/4

← 1 →