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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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

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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
Author
Jo, JunhyeonJin, Mi-JinPark, JungminModepalli, VijayakumarKao, Chi-YuehEpstein, Arthur JChoi, MinPark, NoejungLee, Seung-YeopJeon, CheolhoYoo, Jung-Woo
Keywords
Magnetic semiconductor; Organic-based magnet; Spin density; XPS
Issue Date
201410
Publisher
ELSEVIER SCIENCE SA
Citation
SYNTHETIC METALS, v.196, no., pp.56 - 60
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.
URI
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DOI
http://dx.doi.org/10.1016/j.synthmet.2014.07.018
ISSN
0379-6779
Appears in Collections:
SNS_Journal Papers
MSE_Journal Papers

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