USC USC Takahashi Group

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Supported by





Anton B. Burg Foundation

Zumberge Research Fund


Contact information

Department of Chemistry
840 Downey Way
University of Southern California
Los Angeles, CA 90089-0744

Last modified: 09/12/2015

Publications

Publications

A full list of publicaions and presentations is available at Publications.pdf.
"*" denotes equal contribution.

2017

Review - Single spin magnetic resonance spectroscopy using a nitrogen-vacancy center in diamond (Japanese)
S. Takahashi
Kotaibutsuri May issue , 15 (2017); [link].

Investigation of coherence time of a nitrogen-vacancy center in diamond created by a low energy nitrogen implantation
C. Abeywardana, Z. Peng, L. C. Mugica, E. Kleinsasser, K.-M. C. Fu and S. Takahashi
Appl. Mag. Res. 48 , 571-577 (2017); [doi].

2016

High-frequency electron paramagnetic resonance spectroscopy of surface impurities on nanodiamond
F. H. Cho, V. Stepanov, R. D. Akiel, X. Zhang and S. Takahashi
Submitted (2016);

Electron spin resonance spectroscopy of small ensemble paramagnetic spins using a single nitrogen-vacancy center in diamond
C. Abeywardana, V. Stepanov, F. H. Cho and S. Takahashi
J. Appl. Phys. 120 , 123907 (2016); [doi].

Determination of nitrogen spin concentration in diamond using double electron-electron resonance
V. Stepanov and S. Takahashi
Phys. Rev. B 94 , 024421 (2016); [doi].

High-frequency electron paramagnetic resonance spectroscopy of nitroxide-functionalized nanodiamonds in aqueous solution
R. D. Akiel, V. Stepanov and S. Takahashi
Cell Biochem. Biophys. 75 , 151-157 (2016); [doi].

Investigating functional DNA grafted on nanodiamond surface using site-directed spin labeling and electron paramagnetic resonance spectroscopy
R. D. Akiel, X. Zhang, C. Abeywardana, V. Stepanov, P. Z. Qin and S. Takahashi
J. Phys. Chem. B 120 , 4003-4008 (2016); [doi].

Spin coherence in a Mn3 single-molecule magnet
C. Abeywardana, A. M. Mowson, G. Christou, and S. Takahashi
Appl. Phys. Lett. 108 , 042401 (2016); [doi].

2015

230/115 GHz electron paramagnetic resonance/double electron-electron resonance spectroscopy
F. H. Cho,* V. Stepanov,* C. Abeywardana and S. Takahashi
Methods Enzymol. 563 , 95 (2015); [doi].

High-frequency and high-field optically detected magnetic resonance of nitrogen-vacancy centers in diamond
V. Stepanov, F. H. Cho, C. Abeywardana and S. Takahashi
Appl. Phys. Lett. 106 , 063111 (2015); [doi].

2014

Magnetic resonance spectroscopy using a single nitrogen-vacancy center in diamond
C. Abeywardana,* V. Stepanov,* F. H. Cho and S. Takahashi
Proc. SPIE 9269 , 92690K (2014); [doi].

A high-frequency electron paramagnetic resonance spectrometer for multi-dimensional, -frequency and -phase pulsed measurements
F. H. Cho, V. Stepanov and S. Takahashi
Rev. Sci. Instrum. 85 , 075110 (2014); [doi].

Low temperature synthesis and characterization of Lanthanide-doped BaTiO3 nanocrystals
S. P. Culver, V. Stepanov, M. Mecklenburg, S. Takahashi and R. L. Brutchey
Chem. Commun. 50 , 3480 (2014); [doi].

2013

Grafting nitroxide radicals on nanodiamond surface using click chemistry
E. E. Romanova, R. Akiel, F. H. Cho and S. Takahashi
J. Phys. Chem. A 117 , 11933 (2013); [doi].

Spin decoherence and electron spin bath noise of a nitrogen-vacancy center in diamond
Z.-H. Wang and S. Takahashi
Phys. Rev. B 87 , 115122 (2013); [doi].

2012

Pulsed electron paramagnetic resonance spectroscopy powered by a free-electron laser
S. Takahashi, L.-C. Brunel, D. T. Edwards, J. van Tol, G. Ramian, S. Han & M. S. Sherwin
Nature 489 , 409-413 (2012); [doi].
Media releases:
"Laser helps scientists ‘see' the smallest world" - USC
"Scientists Employ a Powerful UCSB Laser to Breathe New Life into an Old Technology for Studying Atomic-Level Structures" - UC Santa Barbara

Distance measurements across randomly distributed nitroxide probes from the temperature dependence of the electron spin phase memory time at 240 GHz 
D. T. Edwards, S. Takahashi, M. S. Sherwin and S. Han
J. Mag. Res. 223 , 198-206 (2012); [doi].

2011

Decoherence in Crystals of Quantum Molecular Magnets 
S. Takahashi, I. S. Tupitsyn, J. van Tol, C. C. Beedle, D. N. Hendrickson, and P. C. E. Stamp
Nature 476, 76 (2011) [doi].
Media releases:
"USC Scientists Contribute to a Breakthrough in Quantum Computing" - USC
"Researchers Develop Quantum Computing System that Resists ‘Quantum Bug'" - UC Santa Barbara
"Discovery may overcome obstacle for quantum computing: UBC, California researchers" - University of British Columbia

2009

Cavity dumping of an injection-locked free-electron laser
S. Takahashi, G. Ramian, and M. S. Sherwin
Appl. Phys. Lett. 95, 234102 (2009) [doi]

Coherent Manipulation and Decoherence of S=10 Single-Molecule Magnets
S. Takahashi, J. van Tol, C. C. Beedle, D. N. Hendrickson, L.-C. Brunel, and M. S. Sherwin
Phys. Rev. Lett. 102, 087603 (2009) [doi] 

High-Field Phenomena of Qubits
J. van Tol, G. W. Morley, S. Takahashi, D. R. McCamey, C. Boehme, M. E. Zvanut
Appl. Mag. Res. 36, 259 (2009)

2008

Quenching Spin Decoherence in Diamond through Spin Bath Polarization
S. Takahashi, R. Hanson, J. van Tol, M. S. Sherwin and D. D. Awschalom
Phys. Rev. Lett. 101, 047601 (2008) [doi]
Chosen as PRL editor’s suggestions, highlighted in Physics Synopses “Quantum Coherence in Cold Baths”. 

Large Mn25 Single-Molecule Magnet with Spin S=51/2: Magnetic and High-Frequency Electron Paramagnetic Resonance Spectroscopic Characterization of a Giant Spin State
M. Murugesu, S. Takahashi, A. Wilson, K. A. Abboud, W. Wernsdorfer, S. Hill, G. Christou
Inorg. Chem. 47, 9459 (2008)

Pulsed EPR spectrometer with injection-locked UCSB free-electron laser
S. Takahashi, D.G. Allen, J. Seifter, G. Ramian,M.S. Sherwin,J. van Tol,L.-C. Brunel
Infrared Phys. Tech. 55, 426 (2008) [doi]

2007

Submegahertz linewidth at 240 GHz from an injection-locked free-electron laser
S. Takahashi, G. Ramian, M. S. Sherwin, L.-C. Brunel and J. van Tol
Appl. Phys. Lett. 91, 174102 (2007) [doi]

A diffraction-compensating 0-25 ns free space terahertz delay line for coherent quantum control
D. G. Allen, L. Persechini, S. Takahashi, G. Ramian and M. S. Sherwin
Rev. Sci. Instrum. 78, 113103 (2007) [doi]

The UCSB MM-FEL Injection Locking System
G. Ramian, S. Takahashi and M. S. Sherwin
Proceeding of FEL 2007, Novosibirsk, Russia (2007)

2006

Are Lebed’s magic angles truly magic?
S. Takahashi, A. Betancur-Rodiguez, S. Hill, S. Takasaki, J. Yamada and H. Anzai
J. Low Temp. Phys. 142 Nos. 3/4, 311 (2006)

Study of non-magnetic impurity effects of the organic superconductor (TMTSF)2ClO4
S. Takahashi, S. Hill, S. Takasaki, J. Yamada and H. Anzai
AIP Conference Proceedings 850, 619 (2006)

2005

Periodic-orbit resonance in the quasi-1D organic superconductor (TMTSF)2ClO4
S. Takahashi, S. Hill, S. Takasaki, J. Yamada and H. Anzai
Phys. Rev. B 72, 024540 (2005) [doi]

A rotating cavity for high-field angle-dependent microwave spectroscopy of low-dimensional conductors and magnets
S. Takahashi and Stephen Hill
Rev. Sci. Instrum. 76, 023114 (2005) [doi]

Angle-resolved mapping of the Fermi velocity in quasi-two-dimensional conductors and superconductors: probing quasiparticles in nodal superconductors
S. Takahashi and Stephen Hill
J. Appl. Phys. 97, 10B106 (2005)

Fermi surface studies of quasi-1D and quasi-2D organic superconductors using periodic orbit resonances in high magnetic fields
S. Takahashi, A. E. Kovalev, S. Hill, S. Takasaki, J. Yamada, H. Anzai, J. S. Qualls, K. Kawano, M. Tamura, T. Naito and H. Kobayashi
Int. J. Mod. Phys. B 18 Nos. 27-29, 3499-3504 (2004)
Also in Proc. Int. Conf. on High Magnetic Field in Semiconductor Physics (SemiMag 16), Y. J. Wang, L. Engel and N. Bonesteel (eds.)
World Scientific, Singapore (2005); IBSN: 981-256-290-7

A comparison between high-symmetry Mn12 single-molecule magnets in different ligand/solvent environments
S. Hill, N. Anderson, A. Wilson, S. Takahashi, K. Petukhov, N. E. Chakov, M. Murugesu, J. M. North, E. del Barco, A. D. Kent, N. S Dalal, and G. Christou
Polyhedron 24, 2280 (2005)

A spectroscopic comparison between several high-symmetry S = 10 Mn12 single-molecule magnets
S. Hill, N. Anderson, A. Wilson, S. Takahashi, N. E. Chakov, M. Murugesu, J. M. North, N. S. Dalal, and G. Christou
J. Appl. Phys. 97, 10M510 (2005)

2004

Discrete easy-axis tilting in Mn12-acetate, as determined by EPR: implications for the magnetic quantum tunneling mechanism
S. Takahashi, R. S. Edwards, J. M. North, S. Hill and N. S. Dalal
Phys. Rev. B 70, 094429 (2004) [doi]

Temperature dependence of the Josephson plasma resonance between vortex phases in the organic superconductor κ-(BEDT-TTF)2Cu(NCS)2
D. K. Benjamin, S. Takahashi, S. Hill and J. S. Qualls
Solid State Comm. 131, 719 (2004)

High field high frequency EPR techniques and their application to single molecule magnets
R. S. Edwards, S. Hill, P. Goy, R. Wylde and S. Takahashi
Physica B 346-347, 211 (2004)

2003

Effect of an in-plane magnetic field on the interlayer phase coherence in the extreme-2D organic superconductor κ-(BEDT-TTF)2Cu(NCS)2
A. E. Kovalev, S. Takahashi, S. Hill and J. S. Qualls
Int. J. Mod. Phys. B 17 Nos. 18-20, 3547 (2003)

Periodic orbit resonance in (TMTSF)2ClO4
A. E. Kovalev, S. Hill, S. Takahashi, T. N. Dhakal, S. Takasaki, J. Yamada H. Anzai and J. S. Brooks
J. Appl. Phys. 93, 8665 (2003)

Book

Microwave spectroscopy of Q1D and Q2D organic conductors
S. Hill and S. Takahashi
in The Physics of Organic Superconductors and Conductors, A. G. Lebed (eds.), Springer, New York (2008) [ISBN: 978-3-540-76667-4] [condmat/0608490]