Enhanced upper critical fields in low energy iron-irradiated single-crystalline mgb2 thin films

Duong Pham; Soon Gil Jung; Duc H. Tran; Tuson Park; Won Nam Kang

doi:10.9714/psac.2019.21.3.018

Enhanced upper critical fields in low energy iron-irradiated single-crystalline mgb2 thin films

Duong Pham, Soon Gil Jung, Duc H. Tran, Tuson Park, Won Nam Kang

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

We studied the effect of Fe ion irradiation on the upper critical field (Hc2) of 410 nm single-crystalline MgB2 thin films. The irradiation energy was fixed at 140 keV when we increased the irradiation doses from 1×10¹⁴ ion/cm² to 4×10¹⁴ ion/cm². We found that Hc2 significantly increase with increasing irradiation dose, despite the low irradiation energy. The enhancement of Hc2 could be explained by the reduction of electron mean free path caused by defects induced from irradiation, leading to a decrease of coherence length (ξ). We also discussed the effect of irradiation on temperature-dependent resistivity in details.

Original language	English
Pages (from-to)	18-21
Number of pages	4
Journal	Progress in Superconductivity and Cryogenics (PSAC)
Volume	21
Issue number	3
DOIs	https://doi.org/10.9714/psac.2019.21.3.018
State	Published - Sep 2019

Keywords

Fe ion irradiation
MgB2
Upper critical field

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10.9714/psac.2019.21.3.018

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title = "Enhanced upper critical fields in low energy iron-irradiated single-crystalline mgb2 thin films",

abstract = "We studied the effect of Fe ion irradiation on the upper critical field (Hc2) of 410 nm single-crystalline MgB2 thin films. The irradiation energy was fixed at 140 keV when we increased the irradiation doses from 1×1014 ion/cm2 to 4×1014 ion/cm2. We found that Hc2 significantly increase with increasing irradiation dose, despite the low irradiation energy. The enhancement of Hc2 could be explained by the reduction of electron mean free path caused by defects induced from irradiation, leading to a decrease of coherence length (ξ). We also discussed the effect of irradiation on temperature-dependent resistivity in details.",

keywords = "Fe ion irradiation, MgB2, Upper critical field",

author = "Duong Pham and Jung, \{Soon Gil\} and Tran, \{Duc H.\} and Tuson Park and Kang, \{Won Nam\}",

year = "2019",

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T1 - Enhanced upper critical fields in low energy iron-irradiated single-crystalline mgb2 thin films

AU - Pham, Duong

AU - Jung, Soon Gil

AU - Tran, Duc H.

AU - Park, Tuson

AU - Kang, Won Nam

PY - 2019/9

Y1 - 2019/9

N2 - We studied the effect of Fe ion irradiation on the upper critical field (Hc2) of 410 nm single-crystalline MgB2 thin films. The irradiation energy was fixed at 140 keV when we increased the irradiation doses from 1×1014 ion/cm2 to 4×1014 ion/cm2. We found that Hc2 significantly increase with increasing irradiation dose, despite the low irradiation energy. The enhancement of Hc2 could be explained by the reduction of electron mean free path caused by defects induced from irradiation, leading to a decrease of coherence length (ξ). We also discussed the effect of irradiation on temperature-dependent resistivity in details.

AB - We studied the effect of Fe ion irradiation on the upper critical field (Hc2) of 410 nm single-crystalline MgB2 thin films. The irradiation energy was fixed at 140 keV when we increased the irradiation doses from 1×1014 ion/cm2 to 4×1014 ion/cm2. We found that Hc2 significantly increase with increasing irradiation dose, despite the low irradiation energy. The enhancement of Hc2 could be explained by the reduction of electron mean free path caused by defects induced from irradiation, leading to a decrease of coherence length (ξ). We also discussed the effect of irradiation on temperature-dependent resistivity in details.

KW - Fe ion irradiation

KW - MgB2

KW - Upper critical field

UR - https://www.scopus.com/pages/publications/85074772757

U2 - 10.9714/psac.2019.21.3.018

DO - 10.9714/psac.2019.21.3.018

M3 - Article

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SN - 1229-3008

VL - 21

SP - 18

EP - 21

JO - Progress in Superconductivity and Cryogenics (PSAC)

JF - Progress in Superconductivity and Cryogenics (PSAC)

IS - 3

ER -

Enhanced upper critical fields in low energy iron-irradiated single-crystalline mgb2 thin films

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