Vortex phase diagram of pristine and irradiated Co-doped BaFe2As2

被引：1

作者：

Tamegai, T. ^{[1
,2
]}

Taniguchi, T. ^{[1
]}

Taen, T. ^{[1
]}

Nakajima, Y. ^{[1
,2
,3
]}

Nishizaki, T.

Naito, T. ^{[4
]}

Kobayashi, N. ^{[3
]}

Kitamura, H. ^{[5
]}

Murakami, T. ^{[5
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, 7-3-1 Hongo, Tokyo 113, Japan

[2] JST, Transformat Res Project Iron Pnictides TRIP, Tokyo, Japan

[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi, Japan

[4] Iwate Univ, Fac Engn, Morioka, Iwate, Japan

[5] Natl Inst Radiol Sci, Chiba, Japan

来源：

26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5 | 2012年 / 400卷

关键词：

YBA2CU3O7; SINGLE-CRYSTALS; TRANSITION; DISORDER;

D O I：

10.1088/1742-6596/400/2/022122

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Vortex phase diagram is studied up to H = 170 kOe in a pristine and Xe (800 MeV, B-Phi= 20 kOe) irradiated Ba(Fe0.925Co0.075)(2)As-2 single crystals. In both samples, temperature dependence of resistivity (rho) and current (I)-voltage (V) characteristics are carefully measured with a voltage resolution better than 1 nV. In the pristine sample, clear indication of vortex glass transition is obtained. Critical exponents in the pristine sample show little magnetic field dependence unlike the case for SmFeAsO0.85 crystal. Rather, it is similar to the case of YBa2Cu3O7-delta single crystals. In the irradiated sample, both vortex glass and Bose glass scalings give reasonable overlaps of I-V curves.

引用

页数：4

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