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Bulk Fermi surface and momentum density in heavily doped La₂₋ₓSrₓCuO₄ using high-resolution Compton scattering and positron annihilation spectroscopies (with W. Al-Sawai, B. Barbiellini, Y. Sakurai, M. Itou, P. E. Mijnarends, S. Kaprzyk, S. Wakimoto, M. Fujita, S. Basak, H. Lin, Yung Jui Wang, S. W. H. Eijt, H. Schut, K. Yamada, and A. Bansil), Physics Faculty Publications (2012)
We have observed the bulk Fermi surface (FS) in an overdoped (x=0.3) single crystal of...
Fermi-surface topology and low-lying electronic structure of the iron-based superconductor Ca₁₀(Pt₃As₈)(Fe₂As₂)₅ (with Madhab Neupane, Chang Liu, Su-Yang Xu, Yung-Jui Wang, Ni Ni, J. M. Allred, N. Alidoust, Hsin Lin, A. Bansil, R. J. Cava, and M. Z. Hasan), Physics Faculty Publications (2012)
We report a study of low-energy electronic structure and Fermi surface topology for the recently...
Reconstructing the bulk Fermi surface and superconducting gap properties from neutron scattering experiments (with Tanmoy Das and A. Bansil), Physics Faculty Publications (2012)
We develop an analytical tool to extract bulk electronic properties of unconventional superconductors from inelastic...
Coexisting pseudogap, charge-transfer-gap, and Mott-gap energy scales in the resonant inelastic x-ray scattering spectra of electron-doped cuprate superconductors (with Susmita Basak, Tanmoy Das, Hsin Lin, M. z. Hasan, and A. Bansil), Physics Faculty Publications (2012)
We present a computation of Cu K-edge resonant inelastic x-ray scattering (RIXS) spectra for electron-doped...
effect of orbital symmetry of the tip on scanning tunneling spectra of Bi₂Sr₂CaCu₂O₈+δ (with Ilpo Suominen, Jouko Nieminen, and A. Bansil), Physics Faculty Publications (2011)
We discuss how variations in the scanning tunneling microscope (STM) tip, whether unintentional or intentional,...
Renormalization of f levels away from the Fermi energy in electron excitation spectroscopies: Density-functional results for Nd2-xCexCuO4 (with T. Jarlborg, B. Barbiellini, H. Lin, and A. Bansil), Physics Faculty Publications (2011)
Relaxation energies for photoemission where an occupied electronic state is excited and for inverse photoemission...
X-ray absorption near-edge spectra of overdoped La₂₋ₓSrₓCuO₄ high-T(c) superconductors (with Towfiq Ahmed, Tanmoy Das, J. J. Kas, B. Barbiellini, Fernando D. Vila, A. Bansil, and J. J. Rehr), Physics Faculty Publications (2011)
We present results for realistic modeling of the x-ray absorption near edge structure (XANES) of...
Induced superconductivity in noncuprate layers of the Bi₂Sr₂CaCu₂O₈+δ high-temperature superconductor: Modeling of scanning tunneling spectra (with Ilpo Suominen, Jouko Nieminen, and A. Bansil), Physics Faculty Publications (2011)
We analyze how the coherence peaks observed in scanning tunneling spectroscopy (STS) of cuprate high-temperature...
Topological electronic structure in half-Heusler topological insulators (with W. Al-Sawai, Hsin Lin, L. A. Wray, Y. Xia, S. Y. Xu, M. Z. Hasan, and A. Bansil), Physics Faculty Publications (2010)
We have investigated band structures of a series of 28 ternary half-Heusler compounds MM'X of...
Single-Dirac-Cone Topological Surface States in the TlBiSe₂ Class of Topological Semiconductors (with Hsin Lin, L. A. Wray, L. Fu, M. Z. Hasan, and A. Bansil), Physics Faculty Publications (2010)
We investigate several strong spin-orbit coupling ternary chalcogenides related to the (Pb,Sn)Te series of compounds....
Optical model-solution to the competition between a pseudogap phase and a charge-transfer-gap phase in high-temperature cuprate superconductors (with Tanmoy Das and A. Bansil), Physics Faculty Publications (2010)
We present a theoretical framework for a quantitative understanding of the full doping dependence of...
Proposal to determine the Fermi-surface topology of a doped iron-based superconductor using bulk-sensitive Fourier-transform Compton scattering (with Yung Jui Wang, Hsin Lin, B. Barbiellini, P. E. Mijnarends, S. Kaprzyk, and A. Bansil), Physics Faculty Publications (2010)
We have carried out first-principles calculations of the Compton scattering spectra to demonstrate that the...
Gutzwiller magnetic phase diagram of the cuprates (with J. Lorenzana, G. Seibold, and A. Bansil), Physics Faculty Publications (2010)
A general constructive procedure is presented for analyzing magnetic instabilities in two-dimensional materials, in terms...
Emergence of non-Fermi-liquid behavior due to Fermi surface reconstruction in the underdoped cuprate superconductors (with Tanmoy Das and A. Bansil), Physics Faculty Publications (2010)
We present an intermediate coupling scenario together with a model analytic solution where the non-Fermi-liquid...
Origin of the high-energy kink in the photoemission spectrum of the high-temperature superconductor Bi₂Sr₂CaCu₂O₈ (with Susmita Basak, Tanmoy Das, Hsin Lin, J. Nieminen, M. Lindroos, and A. Bansil), Physics Faculty Publications (2009)
The high-energy kink or the waterfall effect seen in the photoemission spectra of cuprates is...
Spectral decomposition and matrix element effects in scanning tunneling spectroscopy of Bi₂Sr₂CaCu₂O₈₊δ (with Jouko Nieminen, Ilpo Suominen, Hsin Lin, and A. Bansil), Physics Faculty Publications (2009)
We present a Green’s function-based framework for modeling the scanning tunneling spectrum from the normal...
Origin of the electron-hole asymmetry in the scanning tunneling spectrum of the high-temperature Bi₂Sr₂CaCu₂O₈+δ superconductor (with Jouko Nieminen, Hsin Lin, and A. Bansil), Physics Faculty Publications (2009)
We have developed a material specific theoretical framework for modeling scanning tunneling spectroscopy (STS) of...
Magnetic mechanism of quasiparticle pairing in hole-doped cuprate superconductors (with A. Bansil), Physics Faculty Publications (2008)
We have computed α2F’s for the hole-doped cuprates within the framework of the one-band Hubbard...
Competing order scenario of two-gap behavior in hole-doped cuprates (with Tanmoy Das and A. Bansil), Physics Faculty Publications (2008)
Angle-dependent studies of the gap function provide evidence for the coexistence of two distinct gaps...
Paramagnon-induced dispersion anomalies in the cuprates (with S. Sahrakorpi and A. Bansil), Physics Faculty Publications (2007)
We report the self-energy associated with random-phase approximation magnetic susceptibility in the hole-doped Bi₂Sr₂CuO₆ (Bi2201)...
Nodeless d-wave superconducting pairing due to residual antiferromagnetism in underdoped Pr2-xCexCuO4-δ (with Tanmoy Das and A. Bansil), Physics Faculty Publications (2007)
We investigate the doping dependence of the penetration depth versus temperature in electron-doped Pr₂₋ₓCeₓCuO4-δ using...
Dispersion anomalies induced by the low-energy plasmon in the cuprates (with A. Bansil), Physics Faculty Publications (2007)
We discuss the characteristic effects of the electron plasmon interaction resulting from the ~ 1...
Effect of hole doping on the electronic structure of Tl2201 (with S. Sahrakorpi, Hsin Lin, and A. Bansil), Physics Faculty Publications (2007)
We discuss doping dependencies of the electronic structure and Fermi surface of the monolayer Tl$_{2-x}$Cu$_x$Ba$_2$CuO$_{6+\delta}$...
Systematic doping evolution of the underlying Fermi surface of La₂₋ₓSrₓCuO₄ (with T. Yoshida, X. J. Zhou, K. Tanaka, W. L. Yang, Z. Hussain, Z. X. Shen, A. Fujimori, S. Sahrakorpi, M. Lindroos, A. Bansil, Seiki Komiya, Yoichi Ando, H. Eisaki, T. Kakeshita, and S. Uchida), Physics Faculty Publications (2006)
We have performed a systematic doping-dependent study of La₂₋ₓSrₓCuO₄ (LSCO) (0.03 <= x <= 0.3)...
Nonmonotonic dₓ2₋y2 superconducting gap in electron-doped Pr0.89LaCe0.11CuO4: Evidence of coexisting antiferromagnetism and superconductivity? (with Tanmoy Das and A. Bansil), Physics Faculty Publications (2006)
Recent experiments on Pr0.89LaCe0.11CuO₄ observe an anisotropic spin-correlation gap and a nonmonotonic superconducting (SC) gap,...
Raising Bi-O bands above the Fermi energy level of hole-doped Bi₂Sr₂CaCu₂O₈+δ and other Cuprate superconductors (with Hsin Lin, S. Sahrakorpi, and A. Bansil), Physics Faculty Publications (2006)
The Fermi surface (FS) of Bi₂Sr₂CaCu₂O₈₊δ (Bi2212) predicted by band theory displays Bi-related pockets around...
Evolution of midgap states and residual three dimensionality in La₂₋ₓSrₓCuO₄ (with S. Sahrakorpi, M. Lindroos, and A. Bansil), Physics Faculty Publications (2005)
We carry out extensive first-principles doping-dependent computations of angle-resolved photoemission (ARPES) intensities in La₂₋ₓSrₓCuO₄ over...
One-band tight-binding model parametrization of the high-Tc cuprates including the effect of kz dispersion (with S. Sahrakorpi, M. Lindroos, Hsin Lin, and A. Bansil), Physics Faculty Publications (2005)
We discuss the effects of interlayer hopping and the resulting kz dispersion in the cuprates...
Influence of the third dimension of quasi-two-dimensional cuprate superconductors on angle-resolved photoemission spectra (with A. Bansil, M. Lindroos, and S. Sahrakorpi), Physics Faculty Publications (2005)
Angle-resolved photoemission spectroscopy (ARPES) presents significant simplifications in analyzing strictly two-dimensional (2D) materials, but even...
Special photon energies for extracting the bosonic spectral function mediating superconductivity in Bi₂Sr₂CaCu₂O₈ via angle-resolved photoemission spectroscopy (with M. Lindroos and A. Bansil), Physics Faculty Publications (2004)
We delineate the complex nature of the angle-resolved photoemission spectroscopy (ARPES) matrix element in Bi₂Sr₂CaCu₂O₈...
Bilayer splitting and coherence effects in optimal and underdoped Bi₂Sr₂CaCu₂O₈+δ (with Y. D. Chuang, A. D. Gromko, A. V. Fedorov, Y. Aiura, K. Oka, Yoichi Ando, M. Lindroos, A. Bansil ar.bansil@neu.edu, and D. S. Dessau), Physics Faculty Publications (2004)
We have carried out extensive high-resolution angle-resolved photoemission (ARPES) experiments on Bi₂Sr₂CACu₂O₈₊δ samples, covering the...
Bridging k- and q- space in the cuprates: comparing ARPES and STM results, Physics Faculty Publications (2004)
Emergence of multiple Fermi surface maps in angle-resolved photoemission from Bi₂Sr₂CaCu₂O₈+δ (with M. C. Asensio, J. Avila, L. Roca, A. Tejeda, G. D. Gu, M. Lindroos, and A. Bansil), Physics Faculty Publications (2003)
We report angle-resolved photoemission spectra (ARPES) for emission from the Fermi energy (EF) over a...
Contrasting pathways to Mott gap collapse in electron and hole doped cuprates, Physics Faculty Publications (2003)
Recent ARPES measurements on the electron-doped cuprate Nd₂₋ₓCeₓCuO₄ can be interpreted in a mean field...
Fermi surface evolution and collapse of the Mott pseudogap in Nd2-xCexCuO4±δ (with C. Kusko, M. Lindroos, and A. Bansil), Physics Faculty Publications (2002)
Fermi surface (FS) maps and spectral intensities obtained recently in Nd₂₋ₓCeₓCuO₄±δ via high resolution ARPES...
Anomalous scattering rate and microwave absorption in Bi₂Sr₂CaCu₂O₈₊δ and Y Ba₂Cu₃O₇₋δ (with C. Kusko, Z. Zhai, and S. Sridhar), Physics Faculty Publications (2001)
We determine the scattering rate from microwave measurements for an optimally doped Bi-2212 single crystal,...
Berryonic matter in the cuprates, Physics Faculty Publications (2001)
A novel form of Jahn-Teller (JT) effect in the cuprates can be reinterpreted as a...
Chaos in a Jahn-Teller molecule, Physics Faculty Publications (2001)
The Jahn-Teller system E ⊗ b1 ⊗ b2 has a particular degeneracy, where the vibronic...
Fermi-surface study of Ba1-xKxBiO3 (with S. Sahrakorpi, B. Barbiellini, S. Kaprzyk, M. Lindroos, and A. Bansil), Physics Faculty Publications (2000)
We present all-electron computations of the three-dimensional (3D) Fermi surfaces (FS’s) in Ba₁₋ₓKₓBiO₃ for a...
Dispersion of ordered stripe phases in the cuprates, Physics Faculty Publications (2000)
A phase separation model is presented for the stripe phase of the cuprates, which allows...
A survey of the Van Hove scenario for high-Tc superconductivity with special emphasis on pseudogaps and striped phases, Physics Faculty Publications (1997)
The Van Hove singularity (VHS) provides a paradigm for the study of the role of...