Research Topic

Investigation of Spin Dynamic at the Interface between Single-Molecule-Magnet and Substrate

Research Aim

This group will pursue the theories of the interaction between organic molecular spin and molecular current caharacteristics with the objective of developing applications of the interaction by controlling it. We are especially interested in single-molecule magnets (SMMs), which show the properties of a magnet in a single molecule. We will make full use of methods for maintaining and controlling spin that utilize molecule-specific ligands, which cannot be achieved with magnetic metal atoms alone. This will allow us to pursue physicochemical theories that describe the novel quantum effects we are expecting.

Role and Need in the Group

We will be working with the molecule synthesis A1 group to advance the development of novel molecules, designing and synthesizing molecules that never exist. We will design and develop the surface and interfacial structures, using those molecules to optimize the injection and transport of spin from the metal substrate to the molecule. We will use that interface control and take advantage of the characteristics that allow single-molecule magnets to preserve the orientation of the spin so as to build a spin valve effect that uses molecules. This will be in collaboration with A03 and A04.

Research Content

a02-1.jpgA01 group members owning advanced synthesis techniques will provide us with external stimulus responsive molecules as well as photochromic and electrochromic molecules. We will elucidate the spin states using an ultra-high vacuum and low-temperature scanning tunneling microscope (STM), focusing on the magnetic resistance caused by their interaction with electron transport, and aim to pursue theories and applications of their generation mechanism. We will make full use of equipment that makes world-class high-resolution measurement possible and we will elucidate the correlation between spin states and conduction properties through spectroscopy of the tunneling current.



Research representative: Tadahiro Komeda Professor / Tohoku University Institute of Multidisciplinary Research for Advanced Materials
Member of the research project: Tsuyoshi Takaoka Lecturer / Tohoku University Institute of Multidisciplinary Research for Advanced Materials
Member of the research project: Yasuyuki Sainoo Assistant Professor / Tohoku University Institute of Multidisciplinary Research for Advanced Materials

Papers List


[21] Coordination Structure Conversion of Protonated Bisporphyrinato Terbium(III) Double-Decker Complexes and Creation of a Kondo Assembly by Electron Injection on Au(111) Surface

Tomoko Inose; Daisuke Tanaka; Jie Liu; Mizu Kajihara; Puneet Mishra; Takuji Ogawa; Tadahiro Komeda
Nanoscale, 10, 19409 - 19417, 2018/09
DOI: 10.1039/C8NR04630A


[20] Assembly and manipulation of adsorbed radical molecules for spin control

T. Komeda
Springer International Publishing: Molecular Architectonics, The Third Stage of Single Molecule Electronics, , 2017

[19] Deposition of an Ultraflat Graphene Oxide Nanosheet on Atomically Flat Substrates

M. Z. H. Khan; S. M. F. Shahed; N. Yuta; T. Komeda
J. Electron. Mater., 1 - 6, 2017
DOI: 10.1007/s11664-017-5327-x


[18] Surface confinement of TbPc2-SMMs: structural, electronic and magnetic properties [重要文献]

E. Moreno Pineda; T. Komeda; K. Katoh; M. Yamashita; M. Ruben
Dalton Trans., 45 , 46, 18417 - 18433, 2016
DOI: 10.1039/c6dt03298b

[17] The Frontier of Molecular Spintronics Based on Multiple-Decker Phthalocyaninato TbIII Single-Molecule Magnets [重要文献]

K. Katoh; T. Komeda; M. Yamashita
The Chemical Record , 16 , 2, 987 - 1016, 2016
DOI: 10.1002/tcr.201500290

[16] DFT calculations on atom-specific electronic properties of G/SiC(0001)

M. Kajihara; T. Suzuki; S. M. F. Shahed; T. Komeda; E. Minamitani; S. Watanabe
Surf. Sci. , 647 , 39 - 44, 2016
DOI: 10.1016/j.susc.2015.12.004

[15] A scanning tunneling microscopy study of the electronic and spin states of bis(phthalocyaninato)terbium(III) (TbPc2) molecules on Ag(111) [重要文献]

F. Ara; Z. K. Qi; J. Hou; T. Komeda; K. Katoh; M. Yamashita
Dalton Trans., 45, 42, 16644 - 16652, 2016
DOI: 10.1039/c6dt01967f


[14] Visualizing Optoelectronic Processes at the Nanoscale

Puneet Mishra; Tadahiro Komeda
ACS Nano, 9, 11, 10540 - 10544, 2015
DOI: 10.1021/acsnano.5b06282

[13] Modulation of the molecular spintronic properties of adsorbed copper corroles

Fan Wu; Jie Liu; Puneet Mishra; Tadahiro Komeda; John Mack; Yi Chang; Nagao Kobayashi; Zhen Shen
Nature Communications, 6, 7547 - 8pages, 2015/6/26
DOI: 10.1038/ncomms8547


[12] Surface temperature dependence on AlN film formation processes induced by supersonic N2 molecular beam

Y. Teraoka; M. Jinno; T. Takaoka; J. R. Harries; R. Okada; Y. Iwai; A. Yoshigoe; T. Komeda
IEEJ Transactions on Electronics, Information and Systems , 134, 4, 524 - 525, 2014
DOI: 10.1541/ieejeiss.134.524

[11] Interaction of gold nanoparticles with a Ti2 film formed on Si(100)

Y. Kakefuda; S. Munakata; K. Edamoto; Y. Igari; T. Komeda
Jpn. J. Appl. Phys., 53, 7, 075002, 2014
DOI: 10.7567/JJAP.53.075002

[10] STM and XPS study of CeO2(111) reduction by atomic hydrogen

Syed Mohammad Fakruddin Shahed; Tomo Hasegawa; Yasuyuki Sainoo; Yoshihide Watanabe; Noritake Isomura; Atsushi Beniya; Hirohito Hirata; Tadahiro Komeda
Surf.Sci, 628, 30 - 35, 2014/10
DOI: 10.1016/j.susc.2014.05.008

[9] Spins of adsorbed molecules investigated by the detection of Kondo resonance

Tadahiro Komeda
Surf.Sci, 630, 343 - 355, 2014/12
DOI: 10.1016/j.susc.2014.07.012

[8] Epitaxial growth of CeO2(111) film on Ru(0001): Scanning tunneling microscopy (STM) and x-ray photoemission spectroscopy (XPS) study

T. Hasegawa; S. M. F. Shahed; Y. Sainoo; A. Beniya; N. Isomura; Y. Watanabe; T. Komeda
J. Chem. Phys, 140, 044711, , 2014/1/30
DOI: 10.1063/1.4849595

[7] Double-decker phthalocyanine complex: Scanning tunneling microscopy study of film formation and spin properties

T. Komeda; K. Katoh; M. Yamashita
Prog. Surf. Sci, 89, 2, 127 - 160, 2014/5
DOI: 10.1016/j.progsurf.2014.03.001

[6] Variation of Kondo Temperature Induced by Molecule-substrate Decoupling in Film Formation of Bis(phthalocyaninato)terbium(III) Molecules on Au(111)

T. Komeda; H. Isshiki; J. Liu; K. Katoh; M. Yamashita
ACS Nano, 8, 5, 4866 - 4875, 2014/4/28
DOI: 10.1021/nn500809v


[5] Tip-enhanced Raman spectroscopy of 4,4′-bipyridine and 4,4′-bipyridine N,N'-dioxide adsorbed on gold thin films

I.I. Rzeźnicka; H. Horino; N. Kikkawa; S. Sakaguchi; A. Morita; S. Takahashi; T. Komeda; H. Fukumura; T. Yamada; M. Kawai
Surf.Sci, 617, 1 - 9, 2013/8/17
DOI: 10.1016/j.susc.2013.08.010

[4] Variation of Kondo peak observed in the assembly of heteroleptic 2,3-naphthalocyaninato phthalocyaninato Tb(III) double-decker complex on Au(111).

Komeda T; Isshiki H; Liu J; Katoh K; Shirakata M; Shirakata M; Yamashita M
ACS Nano, 7, 2, 1092 - 1099, 2013/2/5
DOI: 10.1021/nn304035h

[3] First Observation of a Kondo Resonance for a Stable Neutral Pure Organic Radical, 1,3,5-Triphenyl-6-oxoverdazyl, Adsorbed on the Au(111) Surface

Jie Liu ; Hironari Isshiki; Keiichi Katoh ; Takaumi Morita; Brian, K. Breedlove; Masahiro Yamashita; Tadahiro Komeda
Journal of American Chemicals Society, 135, 2, 651 - 658, 2013/1/29
DOI: 10.1021/ja303510g

[2] Inelastic electron tunneling process for alkanethiol self-assembled monolayers

Noriko Okabayashi; Magnus Paulsson; Tadahiro Komeda
Progress in Surface Science, 88, 1, 1 - 38, 2013/2
DOI: 10.1016/j.progsurf.2012.11.001

[1] Metal Electrode Formation on Organic Film Using Xe-Buffer-Layer-Assisted Deposition for Efficient Measurement of Inelastic Tunneling Spectroscopy

Abdur Rahim; Jie Liu; Syed Mohammad Fakruddin Shahed; Tadahiro Komeda
Applied Physics Express, 6, 10, 105201 - 105204, 2013/9/12
DOI: 10.7567/APEX.6.105201