Photo of Dr Jonathan Alaria

Dr Jonathan Alaria

Senior Lecturer Physics

    Publications

    2021

    Chemically Controllable Magnetic Transition Temperature and Magneto-Elastic Coupling in MnZnSb Compounds (Journal article)

    Murgatroyd, P. A. E., Routledge, K., Durdy, S., Gaultois, M. W., Surta, T. W., Dyer, M. S., . . . Alaria, J. (2021). Chemically Controllable Magnetic Transition Temperature and Magneto-Elastic Coupling in MnZnSb Compounds. ADVANCED FUNCTIONAL MATERIALS. doi:10.1002/adfm.202100108

    DOI: 10.1002/adfm.202100108

    One Site, Two Cations, Three Environments: s2 and s0 Electronic Configurations Generate Pb-Free Relaxor Behavior in a Perovskite Oxide (Journal article)

    Surta, T. W., Whittle, T. A., Wright, M. A., Niu, H., Gamon, J., Gibson, Q. D., . . . Rosseinsky, M. J. (2021). One Site, Two Cations, Three Environments: s2 and s0 Electronic Configurations Generate Pb-Free Relaxor Behavior in a Perovskite Oxide. Journal of the American Chemical Society. doi:10.1021/jacs.0c10572

    DOI: 10.1021/jacs.0c10572

    2020

    Persistence of Ferroelectricity Close to Unit-Cell Thickness in Structurally Disordered Aurivillius Phases (Journal article)

    Keeney, L., Saghi, Z., O'Sullivan, M., Alaria, J., Schmidt, M., & Colfer, L. (2020). Persistence of Ferroelectricity Close to Unit-Cell Thickness in Structurally Disordered Aurivillius Phases. CHEMISTRY OF MATERIALS, 32(24), 10511-10523. doi:10.1021/acs.chemmater.0c03454

    DOI: 10.1021/acs.chemmater.0c03454

    Sn 5 s 2 lone pairs and the electronic structure of tin sulphides: A photoreflectance, high-energy photoemission, and theoretical investigation (Journal article)

    Jones, L., Linhart, W., Fleck, N., Swallow, J., Murgatroyd, P., Shiel, H., . . . Dhanak, V. (n.d.). Sn 5s2 lone pairs and the electronic structure of tin sulphides: A photoreflectance, high-energy photoemission, and theoretical investigation. Physical Review Materials, 4. doi:10.1103/PhysRevMaterials.4.074602

    DOI: 10.1103/PhysRevMaterials.4.074602

    GeSe: Optical Spectroscopy and Theoretical Study of a van der Waals Solar Absorber (Journal article)

    Murgatroyd, P. A. E., Smiles, M. J., Savory, C. N., Shalvey, T. P., Swallow, J. E. N., Fleck, N., . . . Veal, T. D. (2020). GeSe: Optical Spectroscopy and Theoretical Study of a van der Waals Solar Absorber. CHEMISTRY OF MATERIALS, 32(7), 3245-3253. doi:10.1021/acs.chemmater.0c00453

    DOI: 10.1021/acs.chemmater.0c00453

    Modular design via multiple anion chemistry of the high mobility van der Waals semiconductor Bi4O4SeCl2 (Journal article)

    Gibson, Q. D., Manning, T. D., Zanella, M., Zhao, T., Murgatroyd, P. J., Robertson, C. M., . . . Rosseinsky, M. J. (2020). Modular design via multiple anion chemistry of the high mobility van der Waals semiconductor Bi4O4SeCl2. Journal of the American Chemical Society, 142(02), 847-856. doi:10.1021/jacs.9b09411

    DOI: 10.1021/jacs.9b09411

    2019

    Weyl-like points from band inversions of spin-polarised surface states in NbGeSb (Journal article)

    Markovic, I., Hooley, C. A., Clark, O. J., Mazzola, F., Watson, M. D., Riley, J. M., . . . King, P. D. C. (2019). Weyl-like points from band inversions of spin-polarised surface states in NbGeSb. Nature Communications, 10. doi:10.1038/s41467-019-13464-z

    DOI: 10.1038/s41467-019-13464-z

    Chemical Control of Correlated Metals as Transparent Conductors (Journal article)

    Stoner, J. L., Murgatroyd, P. A. E., O'Sullivan, M., Dyer, M. S., Manning, T. D., Claridge, J. B., . . . Alaria, J. (2019). Chemical Control of Correlated Metals as Transparent Conductors. Advanced Functional Materials, 29(11). doi:10.1002/adfm.201808609

    DOI: 10.1002/adfm.201808609

    2018

    Structure determination and crystal chemistry of large repeat mixed-layer hexaferrites (Journal article)

    Delacotte, C., Whitehead, G. F. S., Pitcher, M. J., Robertson, C. M., Sharp, P. M., Dyer, M. S., . . . Rosseinsky, M. J. (2018). Structure determination and crystal chemistry of large repeat mixed-layer hexaferrites. IUCRJ, 5, 681-698. doi:10.1107/S2052252518011351

    DOI: 10.1107/S2052252518011351

    Bi2+2nO2+2nCu2-delta Se2+n-delta X delta (X = CI, Br): A Three-Anion Homologous Series (Journal article)

    Gibson, Q. D., Dyer, M. S., Robertson, C., Delacotte, C., Manning, T. D., Pitcher, M. J., . . . Rosseinsky, M. J. (2018). Bi2+2nO2+2nCu2-delta Se2+n-delta X delta (X = CI, Br): A Three-Anion Homologous Series. INORGANIC CHEMISTRY, 57(20), 12489-12500. doi:10.1021/acs.inorgchem.8b01126

    DOI: 10.1021/acs.inorgchem.8b01126

    Computational Prediction and Experimental Realization of p-Type Carriers in the Wide-Band-Gap Oxide SrZn1-xLixO2 (Journal article)

    Tzitzeklis, C. A., Gupta, J. K., Dyer, M. S., Manning, T. D., Pitcher, M. J., Niu, H. J., . . . Rosseinsky, M. J. (2018). Computational Prediction and Experimental Realization of p-Type Carriers in the Wide-Band-Gap Oxide SrZn1-xLixO2. INORGANIC CHEMISTRY, 57(19), 11874-11883. doi:10.1021/acs.inorgchem.8b00697

    DOI: 10.1021/acs.inorgchem.8b00697

    A and B site doping of a phonon-glass perovskite oxide thermoelectric (Journal article)

    Daniels, L. M., Ling, S., Savvin, S. N., Pitcher, M. J., Dyer, M. S., Claridge, J. B., . . . Rosseinsky, M. J. (2018). A and B site doping of a phonon-glass perovskite oxide thermoelectric. JOURNAL OF MATERIALS CHEMISTRY A, 6(32), 15640-15652. doi:10.1039/c8ta03739f

    DOI: 10.1039/c8ta03739f

    Band gap temperature-dependence of close-space sublimation grown Sb2Se3 by photo-reflectance (Journal article)

    Birkett, M., Linhart, W., Stoner, J., Phillips, L. J., Durose, K., Alaria, J., . . . Veal, T. D. (2018). Band gap temperature-dependence of close-space sublimation grown Sb2Se3 by photo-reflectance. APL Materials, 6(8), 8 pages. doi:10.1063/1.5027157

    DOI: 10.1063/1.5027157

    2017

    Substitution of Re7+ into CaMnO3: an efficient free electron generation dopant for tuning of thermoelectric properties. (Journal article)

    Shin, J. F., Niu, H., Alaria, J., Claridge, J. B., & Rosseinsky, M. J. (2017). Substitution of Re7+ into CaMnO3: an efficient free electron generation dopant for tuning of thermoelectric properties.. Physical chemistry chemical physics : PCCP. doi:10.1039/c7cp06805k

    DOI: 10.1039/c7cp06805k

    Bi4O4Cu1.7Se2.7Cl0.3: an intergrowth of BiOCuSe and Bi2O2Se stabilized by the addition of a third anion (Journal article)

    Gibson, Q. D., Dyer, M. S., Whitehead, G. F. S., Alaria, J., Pitcher, M. J., Edwards, H. J., . . . Rosseinsky, M. J. (2017). Bi4O4Cu1.7Se2.7Cl0.3: an intergrowth of BiOCuSe and Bi2O2Se stabilized by the addition of a third anion. Journal of the American Chemical Society, 139(44), 15568-15571. doi:10.1021/jacs.7b06168

    DOI: 10.1021/jacs.7b06168

    Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides (Journal article)

    Daniels, L. M., Savvin, S. N., Pitcher, M. J., Dyer, M. S., Claridge, J. B., Ling, S., . . . Rosseinsky, M. J. (2017). Phonon-glass electron-crystal behaviour by A site disorder in n-type thermoelectric oxides. ENERGY & ENVIRONMENTAL SCIENCE, 10(9), 1917-1922. doi:10.1039/c7ee01510k

    DOI: 10.1039/c7ee01510k

    AgBiI4 as a Lead-Free Solar Absorber with Potential Application in Photovoltaics (Journal article)

    Sansom, H. C., Whitehead, G. F. S., Dyer, M. S., Zanella, M., Manning, T. D., Pitcher, M. J., . . . Rosseinsky, M. J. (2017). AgBiI4 as a Lead-Free Solar Absorber with Potential Application in Photovoltaics. CHEMISTRY OF MATERIALS, 29(4), 1538-1549. doi:10.1021/acs.chemmater.6b04135

    DOI: 10.1021/acs.chemmater.6b04135

    2016

    Band gap reduction in InNxSb1-x alloys: Optical absorption, k . P modeling, and density functional theory (Journal article)

    Linhart, W. M., Rajpalke, M. K., Buckeridge, J., Murgatroyd, P. A. E., Bomphrey, J. J., Alaria, J., . . . Veal, T. D. (2016). Band gap reduction in InNxSb1-x alloys: Optical absorption, k . P modeling, and density functional theory. APPLIED PHYSICS LETTERS, 109(13). doi:10.1063/1.4963836

    DOI: 10.1063/1.4963836

    Probing the nuclear and magnetic structure of a complex ferromagnetic semiconductor (Conference Paper)

    Claridge, J. B., & Alaria, J. (2016). Probing the nuclear and magnetic structure of a complex ferromagnetic semiconductor. In ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES Vol. 72 (pp. S99). doi:10.1107/S2053273316098533

    DOI: 10.1107/S2053273316098533

    Controlling Phase Assemblage in a Complex Multi-Cation System: Phase-Pure Room Temperature Multiferroic (1-x)BiTi(1-y)/2FeyMg(1-y)/2O3–xCaTiO3 (Journal article)

    Mandal, P., Pitcher, M. J., Alaria, J., Niu, H., Zanella, M., Claridge, J. B., & Rosseinsky, M. J. (2016). Controlling Phase Assemblage in a Complex Multi-Cation System: Phase-Pure Room Temperature Multiferroic (1-x)BiTi(1-y)/2FeyMg(1-y)/2O3–xCaTiO3. ADVANCED FUNCTIONAL MATERIALS, 26(15), 2523-2531. doi:10.1002/adfm.201504911

    DOI: 10.1002/adfm.201504911

    Interface control by chemical and dimensional matching in an oxide heterostructure (Journal article)

    O'Sullivan, M., Hadermann, J., Dyer, M. S., Turner, S., Alaria, J., Manning, T. D., . . . Rosseinsky, M. J. (2016). Interface control by chemical and dimensional matching in an oxide heterostructure. Nature Chemistry, 8, 347-353. doi:10.1038/NCHEM.2441

    DOI: 10.1038/NCHEM.2441

    2015

    Designing switchable polarization and magnetization at room temperature in an oxide (Journal article)

    Mandal, P., Pitcher, M. J., Alaria, J., Niu, H., Borisov, P., Stamenov, P., . . . Rosseinsky, M. J. (2015). Designing switchable polarization and magnetization at room temperature in an oxide. NATURE, 525(7569), 363-366. doi:10.1038/nature14881

    DOI: 10.1038/nature14881

    Tilt engineering of spontaneous polarization and magnetization above 300 K in a bulk layered perovskite (Journal article)

    Pitcher, M., Mandal, P., Dyer, M., Alaria, J., Borisov, P., Niu, H., . . . Rosseinsky, M. (2015). Tilt engineering of spontaneous polarization and magnetization above 300 K in a bulk layered perovskite. Science, 347(6220), 420-424. doi:10.1126/science.1262118

    DOI: 10.1126/science.1262118

    2014

    Bi-induced band gap reduction in epitaxial InSbBi alloys (Journal article)

    Rajpalke, M., Linhart, W., Yu, K. M., Birkett, M., Alaria, J., Bomphrey, J. J., . . . Veal, T. (2014). Bi-induced band gap reduction in epitaxial InSbBi alloys. Applied Physics Letters, 105(21). doi:10.1063/1.4902442

    DOI: 10.1063/1.4902442

    Improved electrical mobility in highly epitaxial La:BaSnO3 films on SmScO3(110) substrates (Journal article)

    Wadekar, P. V., Alaria, J., O'Sullivan, M., Flack, N. L. O., Manning, T. D., Phillips, L. J., . . . Rosseinsky, M. J. (2014). Improved electrical mobility in highly epitaxial La:BaSnO3 films on SmScO3(110) substrates. APPLIED PHYSICS LETTERS, 105(5). doi:10.1063/1.4891816

    DOI: 10.1063/1.4891816

    High Bi content GaSbBi alloys (Journal article)

    Rajpalke, M. K., Linhart, W. M., Birkett, M., Yu, K. M., Alaria, J., Kopaczek, J., . . . Veal, T. D. (2014). High Bi content GaSbBi alloys. JOURNAL OF APPLIED PHYSICS, 116(4). doi:10.1063/1.4891217

    DOI: 10.1063/1.4891217

    Growth and characterization of heteroepitaxial La-substituted BaSnO$_3$ films on SrTiO$_3$ (001) and SmScO$_3$ (110) substrates (Journal article)

    Wadekar, P. V., Alaria, J., O'Sullivan, M., Flack, N. L. O., Manning, T. D., Phillips, L. J., . . . Rosseinsky, M. J. (n.d.). Growth and characterization of heteroepitaxial La-substituted BaSnO$_3$ films on SrTiO$_3$ (001) and SmScO$_3$ (110) substrates. Retrieved from http://arxiv.org/abs/1405.6233v1

    High field magnetotransport and point contact Andreev reflection measurements on CuCr2Se4 and CuCr2Se3Br-Degenerate magnetic semiconductor single crystals (Journal article)

    Borisov, K., Alaria, J., Coey, J. M. D., & Stamenov, P. (2014). High field magnetotransport and point contact Andreev reflection measurements on CuCr2Se4 and CuCr2Se3Br-Degenerate magnetic semiconductor single crystals. JOURNAL OF APPLIED PHYSICS, 115(17). doi:10.1063/1.4861683

    DOI: 10.1063/1.4861683

    Engineered spatial inversion symmetry breaking inan oxide heterostructure built from isosymmetricroom-temperature magnetically orderedcomponents† (Journal article)

    Alaria, J., Borisov, P., Dyer, M. S., Manning, T. D., Lepadatu, S., Cain, M. G., . . . Rosseinsky, M. J. (2014). Engineered spatial inversion symmetry breaking inan oxide heterostructure built from isosymmetricroom-temperature magnetically orderedcomponents†. Chemical Science, 5(4), 1599-1610. doi:10.1039/C3SC53248H

    DOI: 10.1039/C3SC53248H

    2013

    Epitaxial growth and enhanced conductivity of an IT-SOFC cathode based on a complex perovskite superstructure with six distinct cation sites (Journal article)

    Sayers, R., Flack, N. L. O., Alaria, J., Chater, P. A., Palgrave, R. G., McMitchell, S. R. C., . . . Rosseinsky, M. J. (2013). Epitaxial growth and enhanced conductivity of an IT-SOFC cathode based on a complex perovskite superstructure with six distinct cation sites. CHEMICAL SCIENCE, 4(6), 2403-2412. doi:10.1039/c3sc21931c

    DOI: 10.1039/c3sc21931c

    Growth of M-type hexaferrite thin films with conical magnetic structure (Journal article)

    Borisov, P., Alaria, J., Yang, T., McMitchell, S. R. C., & Rosseinsky, M. J. (2013). Growth of M-type hexaferrite thin films with conical magnetic structure. APPLIED PHYSICS LETTERS, 102(3). doi:10.1063/1.4776223

    DOI: 10.1063/1.4776223

    2012

    Magnetic structure of ground and field-induced ordered states of low-dimensional alpha-CoV2O6: Experiment and theory (Journal article)

    Lenertz, M., Alaria, J., Stoeffler, D., Colis, S., Dinia, A., Mentre, O., . . . Suard, E. (2012). Magnetic structure of ground and field-induced ordered states of low-dimensional alpha-CoV2O6: Experiment and theory. PHYSICAL REVIEW B, 86(21). doi:10.1103/PhysRevB.86.214428

    DOI: 10.1103/PhysRevB.86.214428

    2011

    Magnetic Properties of Low-Dimensional alpha and gamma CoV2O6 (Journal article)

    Lenertz, M., Alaria, J., Stoeffler, D., Colis, S., & Dinia, A. (2011). Magnetic Properties of Low-Dimensional alpha and gamma CoV2O6. JOURNAL OF PHYSICAL CHEMISTRY C, 115(34), 17190-17196. doi:10.1021/jp2053772

    DOI: 10.1021/jp2053772

    Conventional and inverse magnetocaloric effects in La0.45Sr0.55MnO3 nanoparticles (Journal article)

    Rostamnejadi, A., Venkatesan, M., Alaria, J., Boese, M., Kameli, P., Salamati, H., & Coey, J. M. D. (2011). Conventional and inverse magnetocaloric effects in La0.45Sr0.55MnO3 nanoparticles. JOURNAL OF APPLIED PHYSICS, 110(4). doi:10.1063/1.3614586

    DOI: 10.1063/1.3614586

    Conventional and inverse magnetocaloric effects in La0.45Sr 0.55MnO3 nanoparticles (Journal article)

    Rostamnejadi, A., Venkatesan, M., Alaria, J., Boese, M., Kameli, P., Salamati, H., & Coey, J. M. D. (2011). Conventional and inverse magnetocaloric effects in La0.45Sr 0.55MnO3 nanoparticles. Journal of Applied Physics, 110(4). doi:10.1063/1.3614586

    DOI: 10.1063/1.3614586

    2010

    Growth and Magnetic Properties of La2/3Sr1/3MnO3/Ca3Co2O6 Bilayers (Journal article)

    Moubah, R., Colis, S., Ulhaq-Bouillet, C., Drillon, M., Dinia, A., & Alaria, J. (2010). Growth and Magnetic Properties of La2/3Sr1/3MnO3/Ca3Co2O6 Bilayers. JOURNAL OF PHYSICAL CHEMISTRY C, 114(3), 1684-1688. doi:10.1021/jp909893n

    DOI: 10.1021/jp909893n

    Growth and magnetic properties of La2/3Sr1/3MnO 3/Ca3Co2O6 bilayers (Journal article)

    Moubah, R., Colis, S., Ulhaq-Bouillet, C., Drillon, M., Dinia, A., & Alaria, J. (2010). Growth and magnetic properties of La2/3Sr1/3MnO 3/Ca3Co2O6 bilayers. Journal of Physical Chemistry C, 114(3), 1684-1688. doi:10.1021/jp909893n

    DOI: 10.1021/jp909893n

    Magnetoresistance of CuCrO2-based delafossite films (Journal article)

    O'Sullivan, M., Stamenov, P., Alaria, J., Venkatesan, M., & Coey, J. M. D. (2010). Magnetoresistance of CuCrO2-based delafossite films. INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009), 200. doi:10.1088/1742-6596/200/5/052021

    DOI: 10.1088/1742-6596/200/5/052021

    Magnetoresistance of CuCrO2-based delafossite films (Conference Paper)

    O'Sullivan, M., Stamenov, P., Alaria, J., Venkatesan, M., & Coey, J. M. D. (2010). Magnetoresistance of CuCrO2-based delafossite films. In Journal of Physics: Conference Series Vol. 200 (pp. 052021). IOP Publishing. doi:10.1088/1742-6596/200/5/052021

    DOI: 10.1088/1742-6596/200/5/052021

    2009

    Growth and Characterisation of Al1-xCrxN Thin Films by RF Plasma Assisted Pulsed Laser Deposition (Journal article)

    Arnold, B. J., Krishnamurthy, S., Kennedy, B., Cockburn, D., McNally, D., Lunney, J. G., . . . Guo, J. -H. (2009). Growth and Characterisation of Al1-xCrxN Thin Films by RF Plasma Assisted Pulsed Laser Deposition. e-Journal of Surface Science and Nanotechnology, 7, 497-502. doi:10.1380/ejssnt.2009.497

    DOI: 10.1380/ejssnt.2009.497

    The Origin of the Magnetism of Etched Silicon (Journal article)

    Grace, P. J., Venkatesan, M., Alaria, J., Coey, J. M. D., Kopnov, G., & Naaman, R. (2009). The Origin of the Magnetism of Etched Silicon. ADVANCED MATERIALS, 21(1), 71-74. doi:10.1002/adma.200801098

    DOI: 10.1002/adma.200801098

    2008

    Charge-transfer ferromagnetism in oxide nanoparticles (Journal article)

    Coey, J. M. D., Wongsaprom, K., Alaria, J., & Venkatesan, M. (2008). Charge-transfer ferromagnetism in oxide nanoparticles. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 41(13). doi:10.1088/0022-3727/41/13/134012

    DOI: 10.1088/0022-3727/41/13/134012

    Structural and magnetic properties of wurtzite CoO thin films (Journal article)

    Alaria, J., Cheval, N., Rode, K., Venkatesan, M., & Coey, J. M. D. (2008). Structural and magnetic properties of wurtzite CoO thin films. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 41(13). doi:10.1088/0022-3727/41/13/135004

    DOI: 10.1088/0022-3727/41/13/135004

    Magnetism of ZnO nanoparticles doped with 3d cations prepared by a solvothermal method (Journal article)

    Alaria, J., Venkatesan, M., & Coey, J. M. D. (2008). Magnetism of ZnO nanoparticles doped with 3d cations prepared by a solvothermal method. JOURNAL OF APPLIED PHYSICS, 103(7). doi:10.1063/1.2833840

    DOI: 10.1063/1.2833840

    2007

    Magnetic and structural properties of Co-doped ZnO thin films (Journal article)

    Dorneles, L. S., Venkatesan, M., Gunning, R., Stamenov, P., Alaria, J., Rooney, M., . . . Coey, J. M. D. (2007). Magnetic and structural properties of Co-doped ZnO thin films. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 310(2), 2087-2088. doi:10.1016/j.jmmm.2006.10.1017

    DOI: 10.1016/j.jmmm.2006.10.1017

    Magnetic and structural properties of Co-doped ZnO thin films (Journal article)

    Dorneles, L. S., Venkatesan, M., Gunning, R., Stamenov, P., Alaria, J., Rooney, M., . . . Coey, J. M. D. (2007). Magnetic and structural properties of Co-doped ZnO thin films. Journal of Magnetism and Magnetic Materials, 310(2 SUPP), 2087-2088. Retrieved from http://www.scopus.com/

    2006

    Pure paramagnetic behavior in Mn-doped ZnO semiconductors (Journal article)

    Alaria, J., Bouloudenine, M., Schmerber, G., Colis, S., Dinia, A., Turek, P., & Bernard, M. (2006). Pure paramagnetic behavior in Mn-doped ZnO semiconductors. JOURNAL OF APPLIED PHYSICS, 99(8). doi:10.1063/1.2172887

    DOI: 10.1063/1.2172887

    Absence of ferromagnetism in Al-doped Zn0.9Co0.10O diluted magnetic semiconductors (Journal article)

    Alaria, J., Bieber, H., Colis, S., Schmerber, G., & Dinia, A. (2006). Absence of ferromagnetism in Al-doped Zn0.9Co0.10O diluted magnetic semiconductors. APPLIED PHYSICS LETTERS, 88(11). doi:10.1063/1.2186079

    DOI: 10.1063/1.2186079

    2005

    No ferromagnetism in Mn doped ZnO semiconductors (Journal article)

    Alaria, J., Turek, P., Bernard, M., Bouloudenine, M., Berbadj, A., Brihi, N., . . . Dinia, A. (2005). No ferromagnetism in Mn doped ZnO semiconductors. CHEMICAL PHYSICS LETTERS, 415(4-6), 337-341. doi:10.1016/j.cplett.2005.09.003

    DOI: 10.1016/j.cplett.2005.09.003