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Evidence for intermolecular interaction between sulfonium and sulfide sulfur atoms and its application to synthesis of cyclic bis(disulfide) dimer.

The Journal of organic chemistry

Kobayashi K, Koyama E, Kono C, Namatame K, Nakamura K, Furukawa N.
PMID: 11300905
J Org Chem. 2001 Mar 23;66(6):2085-90. doi: 10.1021/jo001645k.

On the basis of the remote Pummerer reaction of p-bis(alkylthio)-aromatic S-oxides, the intermolecular interaction between the sulfonium and sulfide sulfur atoms is described. (1) In marked contrast to the Pummerer reaction of 1b-d(3) with (CF(3)CO)(2)O (J. Org. Chem. 1999,...

Electronic structure of charge- and spin-controlled Sr(1-(x+y))La(x+y)Ti(1-x)Cr(x)O3.

Physical review letters

Iwasawa H, Yamakawa K, Saitoh T, Inaba J, Katsufuji T, Higashiguchi M, Shimada K, Namatame H, Taniguchi M.
PMID: 16606039
Phys Rev Lett. 2006 Feb 17;96(6):067203. doi: 10.1103/PhysRevLett.96.067203. Epub 2006 Feb 14.

We present the electronic structure of Sr(1-(x+y))La(x+y)Ti(1-x)Cr(x)O3 investigated by high-resolution photoemission spectroscopy. In the vicinity of the Fermi level, it was found that the electronic structure was composed of a Cr 3d local state with the t(2g)3 configuration and...

Bulk- and surface-sensitive high-resolution photoemission study of two mott-hubbard systems: SrVO3 and CaVO3.

Physical review letters

Eguchi R, Kiss T, Tsuda S, Shimojima T, Mizokami T, Yokoya T, Chainani A, Shin S, Inoue IH, Togashi T, Watanabe S, Zhang CQ, Chen CT, Arita M, Shimada K, Namatame H, Taniguchi M.
PMID: 16606115
Phys Rev Lett. 2006 Feb 24;96(7):076402. doi: 10.1103/PhysRevLett.96.076402. Epub 2006 Feb 23.

We study the electronic structure of Mott-Hubbard systems SrVO3 and CaVO3 with bulk and surface-sensitive high-resolution photoemission spectroscopy, using a vacuum ultraviolet laser, synchrotron radiation, and a discharge lamp (hv = 7-21 eV). A systematic suppression of the density...

Superconducting coherence peak in the electronic excitations of a single-layer Bi2Sr1.6La0.4CuO6+delta cuprate superconductor.

Physical review letters

Wei J, Zhang Y, Ou HW, Xie BP, Shen DW, Zhao JF, Yang LX, Arita M, Shimada K, Namatame H, Taniguchi M, Yoshida Y, Eisaki H, Feng DL.
PMID: 18851643
Phys Rev Lett. 2008 Aug 29;101(9):097005. doi: 10.1103/PhysRevLett.101.097005. Epub 2008 Aug 28.

Angle resolved photoemission spectroscopy study is reported on a high quality optimally doped Bi2Sr1.6La0.4CuO6+delta high-Tc superconductor. In the antinodal region with a maximal d-wave gap, the symbolic superconducting coherence peak, which has been widely observed in multi-CuO2-layer cuprate superconductors,...

Unusual doping dependence of the electronic structure and coexistence of spin-density-wave and superconductor phases in single crystalline Sr1-xKxFe2As2.

Physical review letters

Zhang Y, Wei J, Ou HW, Zhao JF, Zhou B, Chen F, Xu M, He C, Wu G, Chen H, Arita M, Shimada K, Namatame H, Taniguchi M, Chen XH, Feng DL.
PMID: 19392313
Phys Rev Lett. 2009 Mar 27;102(12):127003. doi: 10.1103/PhysRevLett.102.127003. Epub 2009 Mar 26.

The nature of the spin-density wave (SDW) and its relation with superconductivity are crucial issues in the newly discovered iron-pnictide superconductors. Particularly, it is unclear whether the superconducting phase and SDW are truly exclusive from each other. We here...

Large Rashba spin splitting of a metallic surface-state band on a semiconductor surface.

Nature communications

Yaji K, Ohtsubo Y, Hatta S, Okuyama H, Miyamoto K, Okuda T, Kimura A, Namatame H, Taniguchi M, Aruga T.
PMID: 20975678
Nat Commun. 2010 May 17;1:17. doi: 10.1038/ncomms1016.

The generation of spin-polarized electrons at room temperature is an essential step in developing semiconductor spintronic applications. To this end, we studied the electronic states of a Ge(111) surface, covered with a lead monolayer at a fractional coverage of...

Electronic-structure-driven magnetic and structure transitions in superconducting NaFeAs single crystals measured by angle-resolved photoemission spectroscopy.

Physical review letters

He C, Zhang Y, Xie BP, Wang XF, Yang LX, Zhou B, Chen F, Arita M, Shimada K, Namatame H, Taniguchi M, Chen XH, Hu JP, Feng DL.
PMID: 20867599
Phys Rev Lett. 2010 Sep 10;105(11):117002. doi: 10.1103/PhysRevLett.105.117002. Epub 2010 Sep 08.

The electronic structure of NaFeAs is studied with angle-resolved photoemission spectroscopy on high quality single crystals. Large portions of the band structure start to shift around the structural transition temperature and smoothly evolve as the temperature lowers through the...

Hexagonally deformed Fermi surface of the 3D topological insulator Bi2Se3.

Physical review letters

Kuroda K, Arita M, Miyamoto K, Ye M, Jiang J, Kimura A, Krasovskii EE, Chulkov EV, Iwasawa H, Okuda T, Shimada K, Ueda Y, Namatame H, Taniguchi M.
PMID: 20868066
Phys Rev Lett. 2010 Aug 13;105(7):076802. doi: 10.1103/PhysRevLett.105.076802. Epub 2010 Aug 10.

A hexagonal deformation of the Fermi surface of Bi2Se3 has been for the first time observed by angle-resolved photoemission spectroscopy. This is in contrast to the general belief that Bi2Se3 possesses an ideal Dirac cone. The hexagonal shape is...

Experimental realization of a three-dimensional topological insulator phase in ternary chalcogenide TlBiSe₂.

Physical review letters

Kuroda K, Ye M, Kimura A, Eremeev SV, Krasovskii EE, Chulkov EV, Ueda Y, Miyamoto K, Okuda T, Shimada K, Namatame H, Taniguchi M.
PMID: 21230855
Phys Rev Lett. 2010 Oct 01;105(14):146801. doi: 10.1103/PhysRevLett.105.146801. Epub 2010 Sep 28.

We report the first observation of a topological surface state on the (111) surface of the ternary chalcogenide TlBiSe₂ by angle-resolved photoemission spectroscopy. By tuning the synchrotron radiation energy we reveal that it features an almost ideal Dirac cone...

Usefulness of embolization of the middle meningeal artery for refractory chronic subdural hematomas.

Surgical neurology international

Hashimoto T, Ohashi T, Watanabe D, Koyama S, Namatame H, Izawa H, Haraoka R, Okada H, Ichimasu N, Akimoto J, Haraoka J.
PMID: 24032079
Surg Neurol Int. 2013 Aug 19;4:104. doi: 10.4103/2152-7806.116679. eCollection 2013.

BACKGROUND: Chronic subdural hematoma (CSDH) is generally treated by burr hole irrigation. However, sometimes repeated recurrence is observed, and treatment may consequently become difficult. We examined the efficacy of embolization of the middle meningeal artery (MMA) for such cases.METHODS:...

High-energy anomaly in the band dispersion of the ruthenate superconductor.

Physical review letters

Iwasawa H, Yoshida Y, Hase I, Shimada K, Namatame H, Taniguchi M, Aiura Y.
PMID: 23006289
Phys Rev Lett. 2012 Aug 10;109(6):066404. doi: 10.1103/PhysRevLett.109.066404. Epub 2012 Aug 07.

We reveal a "high-energy anomaly" (HEA) in the band dispersion of the unconventional ruthenate superconductor Sr2RuO4, by means of high-resolution angle-resolved photoemission spectroscopy (ARPES) with tunable energy and polarization of incident photons. This observation provides another class of correlated...

Photoelectron spin-polarization control in the topological insulator Bi2Se3.

Physical review letters

Zhu ZH, Veenstra CN, Zhdanovich S, Schneider MP, Okuda T, Miyamoto K, Zhu SY, Namatame H, Taniguchi M, Haverkort MW, Elfimov IS, Damascelli A.
PMID: 24579623
Phys Rev Lett. 2014 Feb 21;112(7):076802. doi: 10.1103/PhysRevLett.112.076802. Epub 2014 Feb 20.

We study the manipulation of the spin polarization of photoemitted electrons in Bi2Se3 by spin- and angle-resolved photoemission spectroscopy. General rules are established that enable controlling the photoelectron spin-polarization. We demonstrate the ± 100% reversal of a single component...

Showing 1 to 12 of 149 entries