Organic-based magnetic semiconductor thin film of Fe(TCNQ) x∼2 developed by physical vapor deposition and local spin density induced core-level shifts

Junhyeon Jo; Mi Jin Jin; Jungmin Park; Vijayakumar Modepalli; Chi Yueh Kao; A. J. Epstein; Min Choi; Noejung Park; Seung Yeop Lee; Cheolho Jeon; Jung Woo Yoo

doi:10.1016/j.synthmet.2014.07.018

Organic-based magnetic semiconductor thin film of Fe(TCNQ) _x∼2 developed by physical vapor deposition and local spin density induced core-level shifts

Junhyeon Jo
, Mi Jin Jin
, Jungmin Park
, Vijayakumar Modepalli
, Chi Yueh Kao
, A. J. Epstein
, Min Choi
, Noejung Park
, Seung Yeop Lee
, Cheolho Jeon^*
, Jung Woo Yoo

^*Corresponding author for this work

Electronic Materials Engineering

Ulsan National Institute of Science and Technology
Ohio State University
Korea Basic Science Institute

Research output: Contribution to journal › Journal article › peer-review

3 Scopus citations

Abstract

Thin film of Fe(TCNQ:tetracyanoquinodimethane)_x∼2 that exhibits both ferromagnetic and semiconducting behavior was developed by physical vapor deposition. The IR and photoemission spectra display clear evidences of coordination between metal and TCNQ based on charge transfer rather than physical mixture. The shifts of C and N 1s core-level spectra due to metal-TCNQ coordination reveal the local spin density of the TCNQ^- anion, predicted by DFT calculation. The valence band spectra of the Fe(TCNQ)_x∼2 thin film also confirm the formation of a singly occupied molecular orbital (SOMO) in TCNQ^-, which leads to long-range magnetic order as confirmed by a vibrating sample magnetometer.

Original language	English
Pages (from-to)	56-60
Number of pages	5
Journal	Synthetic Metals
Volume	196
DOIs	https://doi.org/10.1016/j.synthmet.2014.07.018
State	Published - 2014.10

Keywords

Magnetic semiconductor
Organic-based magnet
Spin density
XPS

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10.1016/j.synthmet.2014.07.018

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@article{ad55332b79f14ae69fb40e40afb6d6b3,

title = "Organic-based magnetic semiconductor thin film of Fe(TCNQ) x∼2 developed by physical vapor deposition and local spin density induced core-level shifts",

abstract = "Thin film of Fe(TCNQ:tetracyanoquinodimethane)x∼2 that exhibits both ferromagnetic and semiconducting behavior was developed by physical vapor deposition. The IR and photoemission spectra display clear evidences of coordination between metal and TCNQ based on charge transfer rather than physical mixture. The shifts of C and N 1s core-level spectra due to metal-TCNQ coordination reveal the local spin density of the TCNQ- anion, predicted by DFT calculation. The valence band spectra of the Fe(TCNQ)x∼2 thin film also confirm the formation of a singly occupied molecular orbital (SOMO) in TCNQ-, which leads to long-range magnetic order as confirmed by a vibrating sample magnetometer.",

keywords = "Magnetic semiconductor, Organic-based magnet, Spin density, XPS",

author = "Junhyeon Jo and Jin, \{Mi Jin\} and Jungmin Park and Vijayakumar Modepalli and Kao, \{Chi Yueh\} and Epstein, \{A. J.\} and Min Choi and Noejung Park and Lee, \{Seung Yeop\} and Cheolho Jeon and Yoo, \{Jung Woo\}",

year = "2014",

month = oct,

doi = "10.1016/j.synthmet.2014.07.018",

language = "English",

volume = "196",

pages = "56--60",

journal = "Synthetic Metals",

issn = "0379-6779",

}

TY - JOUR

T1 - Organic-based magnetic semiconductor thin film of Fe(TCNQ) x∼2 developed by physical vapor deposition and local spin density induced core-level shifts

AU - Jo, Junhyeon

AU - Jin, Mi Jin

AU - Park, Jungmin

AU - Modepalli, Vijayakumar

AU - Kao, Chi Yueh

AU - Epstein, A. J.

AU - Choi, Min

AU - Park, Noejung

AU - Lee, Seung Yeop

AU - Jeon, Cheolho

AU - Yoo, Jung Woo

PY - 2014/10

Y1 - 2014/10

N2 - Thin film of Fe(TCNQ:tetracyanoquinodimethane)x∼2 that exhibits both ferromagnetic and semiconducting behavior was developed by physical vapor deposition. The IR and photoemission spectra display clear evidences of coordination between metal and TCNQ based on charge transfer rather than physical mixture. The shifts of C and N 1s core-level spectra due to metal-TCNQ coordination reveal the local spin density of the TCNQ- anion, predicted by DFT calculation. The valence band spectra of the Fe(TCNQ)x∼2 thin film also confirm the formation of a singly occupied molecular orbital (SOMO) in TCNQ-, which leads to long-range magnetic order as confirmed by a vibrating sample magnetometer.

AB - Thin film of Fe(TCNQ:tetracyanoquinodimethane)x∼2 that exhibits both ferromagnetic and semiconducting behavior was developed by physical vapor deposition. The IR and photoemission spectra display clear evidences of coordination between metal and TCNQ based on charge transfer rather than physical mixture. The shifts of C and N 1s core-level spectra due to metal-TCNQ coordination reveal the local spin density of the TCNQ- anion, predicted by DFT calculation. The valence band spectra of the Fe(TCNQ)x∼2 thin film also confirm the formation of a singly occupied molecular orbital (SOMO) in TCNQ-, which leads to long-range magnetic order as confirmed by a vibrating sample magnetometer.

KW - Magnetic semiconductor

KW - Organic-based magnet

KW - Spin density

KW - XPS

UR - https://www.scopus.com/pages/publications/84906255762

U2 - 10.1016/j.synthmet.2014.07.018

DO - 10.1016/j.synthmet.2014.07.018

M3 - Journal article

AN - SCOPUS:84906255762

SN - 0379-6779

VL - 196

SP - 56

EP - 60

JO - Synthetic Metals

JF - Synthetic Metals

ER -

Organic-based magnetic semiconductor thin film of Fe(TCNQ) _x∼2 developed by physical vapor deposition and local spin density induced core-level shifts

Abstract

Keywords

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