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Review Articles and Book Chapters


  • F. Reyes-Osorio, F. Garcia-Gaitan, D. J. Strachan, P. Plecháč, S. R. Clark, and B. K. Nikolić, Schwinger-Keldysh nonequilibrium quantum field theory of open quantum systems beyond the Markovian regime: Application to the spin-boson model, arXiv:2405.00765 (2024).
  • J. Varela-Manjarres, A. Kefayati, M. B. Jungfleisch, J. Q. Xiao, and B. K. Nikolić, Charge and spin current pumping by ultrafast demagnetization dynamics, arXiv:2404.00779 (2024). [PDF]
  • F. Garcia-Gaitan, A. Kefayati, J. Q. Xiao, and B. K. Nikolić, Magnon spectrum of altermagnets: Time-dependent matrix product states vs. linearized Holstein-Primakoff calculations unravelling spontaneous magnon decay, arXiv:2402.19433 (2024).


  • F. Reyes-Osorio and B. K. Nikolić, Nonlocal damping of spin waves in a magnetic insulator induced by normal, heavy, or altermagnetic metallic overlayer: A Schwinger-Keldysh field theory approach, arXiv:2312.09140 (2023).
  • A. Kefayati and B. K. Nikolić, Origins of electromagnetic radiation from spintronic terahertz emitters: A time-dependent density functional theory plus Jefimenko equations approach, arXiv:2312.04476 (2023). [PDF]
  • K. Zollner, S. M. Joao, B. K. Nikolić, and J. Fabian, Twist- and gate-tunable proximity spin-orbit coupling, spin relaxation anisotropy, and charge-to-spin conversion in heterostructures of graphene and transition-metal dichalcogenides, Phys. Rev. B 108, 235166 (2023). [PDF]
  • F. Reyes-Osorio and B. K. Nikolić, Gilbert damping in metallic ferromagnets from Schwinger-Keldysh field theory: Intrinsically nonlocal, nonuniform, and made anisotropic by spin-orbit coupling, Phys. Rev. B 109, 024413 (2024). [PDF]
  • D.-Q. To, C. Y. Ameyaw, A. Suresh, S. Bhatt, M. J. H. Ku, M. B. Jungfleisch, J. Q. Xiao, J. M. O. Zide, B. K. Nikolić, and M. F. Doty, Giant spin Nernst effect in a two-dimensional antiferromagnet due to magnetoelastic coupling-induced gaps and interband transitions between magnon-like bands, Phys. Rev. B 108, 085435 (2023). [PDF].
  • F. Garcia-Gaitan and B. K. Nikolić, Fate of entanglement in ferro- and antiferromagnets under Lindbladian or non-Markovian dynamics and conditions for transition to classical Landau-Lifshitz dynamics, Phys. Rev. B 109, L180408 (2024). [PDF]
  • F. Reyes-Osorio and B. K. Nikolić, Anisotropic skyrmion mass induced by surrounding conduction electrons: A Schwinger-Keldysh field theory approach, arXiv:2302.04220.



  • F. Reyes Osorio and B. K. Nikolić, Wide ferromagnetic domain walls can host both adiabatic reflectionless spin transport and finite nonadiabatic spin torque: A time-dependent quantum transport picture, arXiv:2112.08356.
  • S. Roche, S. R. Power, B. K. Nikolić, J. H. García, and A.-P. Jauho, Have mysterious topological valley currents been observed in graphene superlattices?, J. Phys. Mater. 5, 021001 (2022). [PDF]
  • K. Dolui, A. Suresh, and B. K. Nikolić, Spin pumping from antiferromagnetic insulator spin-orbit-proximitized by adjacent heavy metal: A first-principles Floquet-nonequilibrium Green function study, J. Phys. Mater. 5, 034002 (2022). [PDF] Focus Issue on Nonequilibrium properties of quantum materials
  • P. Mondal, A. Suresh, and B. K. Nikolić, When can localized spins interacting with conduction electrons in ferro- or antiferromagnets be described classically via the Landau-Lifshitz equation: Transition from quantum many-body entangled to quantum-classical nonequilibrium states, Phys. Rev. B 104, 214401 (2021). [PDF]
  • U. Bajpai, A. Suresh, and B. K. Nikolić, Quantum many-body states and Green's functions of nonequilibrium electron-magnon systems: Localized spin operators vs. their mapping to Holstein-Primakoff bosons, Phys. Rev. B 104, 184425 (2021). [PDF]



  • A. Suresh, U. Bajpai, and B. K. Nikolić, Magnon-driven chiral charge and spin pumping and electron-magnon scattering from time-dependent quantum transport combined with classical atomistic spin dynamics, Phys. Rev. B 101, 214412 (2020). [PDF]
  • K. Zollner, M. D. Petrović, K. Dolui, P. Plecháč, B. K. Nikolić, and J. Fabian, Scattering-induced and highly tunable by gate damping-like spin-orbit torque in graphene doubly proximitized by two-dimensional magnet Cr2Ge2Te6 and monolayer WS2, Phys. Rev. Res. 2, 043057 (2020). [PDF]
  • K. Dolui, M. D. Petrović, K. Zollner, P. Plecháč, J. Fabian, and B. K. Nikolić, Proximity spin-orbit torque on a two-dimensional magnet within van der Waals heterostructure: Current-driven antiferromagnet-to-ferromagnet reversible nonequilibrium phase transition in bilayer CrI3, Nano Lett. 20, 2288 (2020). [PDF] Supplementary Movie:
  • M. D. Petrović, U. Bajpai, P. Plecháč, and B. K. Nikolić, Annihilation of topological solitons in magnetism with spin wave burst finale: The role of nonequilibrium electrons causing nonlocal damping and spin pumping over ultrabroadband frequency range, Phys. Rev. B 104, L020407 (2021). [PDF]. Supplementary Movie:
  • K. Dolui, U. Bajpai, and B. K. Nikolić, Effective spin-mixing conductance of topological-insulator/ferromagnet and heavy-metal/ferromagnet spin-orbit-coupled interfaces: A first-principles Floquet-nonequilibrium Green function approach, Phys. Rev. Mater. 4, 121201(R) (2020). [PDF]


  • U. Bajpai and B. K. Nikolić, Time-retarded damping and magnetic inertia in the Landau-Lifshitz-Gilbert equation self-consistently coupled to electronic time-dependent nonequilibrium Green functions, Phys. Rev. B 99, 134409 (2019). [PDF]
  • P. Mondal, U. Bajpai, M. D. Petrović, P. Plecháč, and B. K. Nikolić, Quantum spin-transfer torque induced nonclassical magnetization dynamics and electron-magnetization entanglement, Phys. Rev. B 99, 094431 (2019). [PDF]
  • U. Bajpai, B. S. Popescu, P. Plecháč, B. K. Nikolić, L. E. F. Foa Torres, H. Ishizuka, and N. Nagaosa, Spatio-temporal dynamics of shift current quantum pumping by femtosecond light pulse, J. Phys.: Mater. 2, 025004 (2019). [PDF] Supplementary Movies:
  • H. Mera, T. G. Pedersen, and B. K. Nikolić, Fast summation of divergent series and resurgent transseries in quantum field theories from Meijer-G approximants, Phys. Rev. D 97, 105027 (2018). [PDF]
  • M. Petrović, B. S. Popescu, U. Bajpai, P. Plecháč, and B. K. Nikolić, Spin and charge pumping by current-driven magnetic domain wall motion: A self-consistent multiscale time-dependent quantum-classical hybrid approach, Phys. Rev. Applied 10, 054038 (2018). [PDF] Supplementary Movies:
  • B. K. Nikolić, K. Dolui, M. Petrović, P. Plecháč, T. Markussen, and K. Stokbro, First-principles quantum transport modeling of spin-transfer and spin-orbit torques in magnetic multilayers (Chapter of Handbook of Materials Modeling, Volume 2 Applications: Current and Emerging Materials (Springer, Cham, 2018). [PDF]


  • K. Dolui and B. K. Nikolić, Spin-memory loss due to spin-orbit coupling at ferromagnet/heavy-metal interfaces: Ab initio spin-density matrix approach, Phys. Rev. B 96, 220403(R) (2017). [PDF]
  • J. M. Marmolejo-Tejada, J. H. García, M. Petrović, P.-H. Chang, X.-L. Sheng, A. Cresti, P. Plecháč, S. Roche, and B. K. Nikolić, Deciphering the origin of nonlocal resistance in multiterminal graphene on hexagonal-boron-nitride with ab initio quantum transport: Fermi surface edge currents rather than Fermi sea topological valley currents, J. Phys.: Mater. 1, 0150061 (2018). [PDF]
  • J. M. Marmolejo-Tejada, K. Dolui, P. Lazić, P.-H. Chang, S. Smidstrup, D. Stradi, K. Stokbro, and B. K. Nikolić, Proximity band structure and spin textures on both sides of topological-insulator/ferromagnetic-metal interface and their transport probes, Nano Lett. 17, 5626 (2017). [PDF]


  • A. Cresti, B. K. Nikolić, J. H. García, and S. Roche, Charge, spin and valley Hall effects in disordered graphene, Riv. Nuovo Cimento 39, 587 (2016). [PDF]
  • X.-L. Sheng and B. K. Nikolić, Monolayer of the 5d transition metal trichloride OsCl3: A playground for two-dimensional magnetism, room-temperature quantum anomalous Hall effect, and topological phase transitions, Phys. Rev. B 95, 201402(R) (2017). [PDF]
  • D. V. Tuan, J. M. Marmolejo-Tejada, X. Waintal, B. K. Nikolić, and S. Roche, Spin Hall effect and origins of nonlocal resistance in adatom-decorated graphene, Phys. Rev. Lett. 117, 176602 (2016). [PDF]
  • T. G. Pedersen, S. Latini, K. S. Thygesen, H. Mera and B. K. Nikolić, Exciton ionization in multilayer transition-metal dichalcogenides, New J. Phys. 18, 073043 (2016). [PDF]


  • H. Mera, T. G. Pedersen, and B. K. Nikolić, Hypergeometric resummation of self-consistent sunset diagrams for electron-boson quantum many-body systems out of equilibrium, Phys. Rev. B 94, 165429 (2016). [PDF]
  • T. G. Pedersen, H. Mera, and B. K. Nikolić, Stark effect in low-dimension hydrogen, Phys. Rev. A 93, 013409 (2016). [PDF]
  • F. Mahfouzi, B. K. Nikolić, and N. Kioussis, Antidamping spin-orbit torque driven by spin-flip reflection mechanism on the surface of a topological insulator: A time-dependent nonequilibrium Green function approach, Phys. Rev. B 93, 115419 (2016). [PDF].
  • M. Jamali, J. S. Lee, J. S. Jeong, F. Mahfouzi, Y. Lv, Z. Zhao, B. K. Nikolić, K. Andre Mkhoyan, N. Samarth, and J.-P. Wang, Giant spin pumping and inverse spin Hall effect in the presence of surface spin-orbit coupling of topological insulator Bi2Se3, Nano Lett. 15, 7126 (2015). [PDF]
  • P.-H. Chang, T. Markussen, S. Smidstrup, K. Stokbro, and B. K. Nikolić, Nonequilibrium spin texture within a thin layer below the surface of current-carrying topological insulator Bi2Se3: A first-principles quantum transport study, Phys. Rev. B 92, 201406(R) (2015). [PDF]


  • H. Mera. T. G. Pedersen, and B. K. Nikolić, Nonperturbative quantum physics from low-order perturbation theory, Phys. Rev. Lett. 115, 143001 (2015). [PDF]
  • J. K. Freericks, B. K. Nikolić, and O. Frieder, The nonequilibrium quantum many-body problem as a paradigm for extreme data science, Int J. Mod. Phys. B 28, 1430021 (2014). [PDF]
  • F. Mahfouzi, N. Nagaosa, and B. K. Nikolić, Spin-to-charge conversion in lateral and vertical topological-insulator/ferromagnet heterostructures with microwave-driven precessing magnetization, Phys. Rev. B 90, 115432 (2014). [PDF]
  • P.-H. Chang, H. Liu, and B. K. Nikolić, First-principles vs. semi-empirical modeling of global and local electronic transport properties of graphene nanopore-based sensors for DNA sequencing, J. Comput. Electron. 13, 847 (2014). [PDF]
  • P.-H. Chang, M. S. Bahramy, N. Nagaosa, and B. K. Nikolić, Giant thermoelectric effect in graphene-based topological insulators with nanopores, Nano Lett. 14, 3779 (2014). [PDF]


  • F. Mahfouzi and B. K. Nikolić, Signatures of electron-magnon interaction in charge and spin currents through magnetic tunnel junctions: A nonequilibrium many-body perturbation theory approach, Phys. Rev. B 90, 045115 (2014). [PDF]
  • P.-H. Chang, F. Mahfouzi, N. Nagaosa, and B. K. Nikolić, Spin-Seebeck effect on the surface of a topological insulator due to nonequilibrium spin-polarization parallel to the direction of thermally driven electronic transport, Phys. Rev. B 89, 195418 (2014). [PDF]
  • K. K. Saha and B. K. Nikolić, Negative differential resistance in graphene-nanoribbon/carbon-nanotube crossbars: A first-principles multiterminal quantum transport study, J. Comput. Electron. 12, 542 (2013). [PDF]
  • F. Mahfouzi and B. K. Nikolić, How to construct the proper gauge-invariant density matrix in steady-state nonequilibrium: Applications to spin-transfer and spin-orbit torques, SPIN 3, 1330002 (2013). [PDF]


  • F. Mahfouzi, N. Nagaosa, and B. K. Nikolić, Spin-orbit coupling induced spin-transfer torque and current polarization in topological-insulator/ferromagnet vertical heterostructures, Phys. Rev. Lett. 109, 166602 (2012). [PDF]
  • K. K. Saha, A. Blom, K. S. Thygesen, and B. K. Nikolić, Magnetoresistance and negative differential resistance in Ni/Graphene/Ni vertical heterostructures driven by finite bias voltage: A first-principles study, Phys. Rev. B 85, 184426 (2012). [PDF]
  • P.-H. Chang, and B. K. Nikolić, Edge currents and nanopore arrays in zigzag and chiral graphene nanoribbons as a route toward high-ZT thermoelectrics, Phys. Rev. B 86, 041406(R) (2012). [PDF]


  • C.-L. Chen, C.-R. Chang, and B. K. Nikolić, Quantum coherence and its dephasing in the giant spin Hall effect and nonlocal voltage generated by magnetotransport through multiterminal graphene bars, Phys. Rev. B 85, 155414 (2012). [PDF]
  • B. K. Nikolić, K. K. Saha, T. Markussen, and K. S. Thygesen, First-principles quantum transport modeling of thermoelectricity in single-molecule nanojunctions with graphene nanoribbon electrodes, J. Comp. Electronics 11, 78 (2012) (mini-review article for the special issue of JCEL on "Simulation of Thermal, thermoelectric, and Electro-thermal Phenomena in Nanostructures"). [PDF]
  • F. Mahfouzi, J. Fabian, N. Nagaosa, and B. K. Nikolić, Charge pumping by magnetization dynamics in magnetic and semi-magnetic tunnel junctions with interfacial Rashba or bulk extrinsic spin-orbit couplings, Phys. Rev. B 85, 054406 (2012). [PDF]
  • K. K. Saha, M. Drndić, and B. K. Nikolić, DNA base-specific modulation of microampere transverse edge currents through a metallic graphene nanoribbon with a nanopore, Nano Lett. 12, 50 (2012). [PDF]
  • K. K. Saha, T. Markussen, K. S. Thygesen, and B. K. Nikolić, Multiterminal single-molecule–graphene-nanoribbon junctions with the thermoelectric figure of merit optimized via evanescent mode transport and gate voltage, Phys. Rev. B 84, 041412(R) (2011). [PDF]


  • K. K. Saha, B. K. Nikolić, V. Meunier, W. Lu, and J. Bernholc, Quantum-interference-controlled three-terminal molecular transistors based on a single ring-shaped molecule connected to graphene nanoribbon electrodes, Phys. Rev. Lett. 105, 236803 (2010). [PDF]
  • F. Mahfouzi, B. K. Nikolić, S.-H. Chen, and C.-R. Chang, Microwave-driven ferromagnet–topological-insulator heterostructures: The prospect for giant spin battery effect and quantized charge pump devices, Phys. Rev. B 82, 195440 (2010). [PDF]
  • D. A. Areshkin and B. K. Nikolić, Electron density and transport in top-gated graphene nanoribbon devices: First-principles Green function algorithms for systems containing a large number of atoms, Phys. Rev. B 81, 155450 (2010). [PDF]
  • S.-H. Chen, B. K. Nikolić, and C.-R. Chang, Inverse quantum spin Hall effect generated by spin pumping from precessing magnetization into a graphene-based two-dimensional topological insulator, Phys. Rev. B 81, 035428 (2010). [PDF]


  • D. A. Areshkin and B. K. Nikolić, I-V curve signatures of nonequilibrium-driven band gap collapse in magnetically ordered zigzag graphene nanoribbon two-terminal devices, Phys. Rev. B 79, 205430 (2009). [PDF]
  • B. K. Nikolić and R. L. Dragomirova, What can we learn about the dynamics of transported spins by measuring shot noise in spin-orbit-coupled nanostructures?, Semicond. Sci. Tech. 24, 064006 (2009) (review article for the special issue of Semicond. Sci. Tech. on "The effects of spin-orbit interaction on charge transport"). [PDF]
  • S.-H. Chen, C.-R. Chang, J. Q. Xiao, and B. K. Nikolić, Spin and charge pumping in magnetic tunnel junctions with precessing magnetization: A nonequilibrium Green function approach, Phys. Rev. B. 79, 054424 (2009). [PDF]
  • R. L. Dragomirova, D. A. Areshkin, and B. K. Nikolić, Shot noise probing of magnetic ordering in zigzag graphene nanoribbons, Phys. Rev. B 79, 241401(R) (2009). [PDF]
  • R. Cao, T. Moriyama, W. G. Wang, X. Fan, J. Kolodzey, S.-H. Chen, C.-R. Chang, Y. Tserkovnyak, B. K. Nikolić, and J. Q. Xiao, Spin-polarized transport and dynamics in magnetic tunneling structures, IEEE Transactions on Magnetics 45, 3434 (2009). [PDF]


  • R. L. Dragomirova, L. P. Zarbo, and B. K. Nikolić, Spin and charge shot noise in mesoscopic spin Hall systems, EPL (Europhysics Letters) 84, 37004 (2008). [PDF]
  • T. Moriyama, R. Cao, X. Fan, G. Xuan, B. K. Nikolić, Y. Tserkovnyak, J. Kolodzey, and J. Q. Xiao, Tunnel barrier enhanced voltage signal generated by magnetization precession of a single ferromagnetic layer, Phys. Rev. Lett. 100, 067602 (2008). [PDF]


  • L. P. Zarbo and B. K. Nikolić, Spatial distribution of local currents of massless Dirac fermions in quantum transport through graphene nanoribbons, EPL (Europhysics Letters) 80, 47001 (2007). [PDF]
  • R. L. Dragomirova and B. K. Nikolić, Shot noise of spin-polarized charge currents as a probe of spin coherence in spin-orbit coupled nanostructures, Phys. Rev. B 75, 085328 (2007). [PDF]
  • B. K. Nikolić and L. P. Zarbo, Extrinsically vs. intrinsically driven spin Hall effect in disordered mesoscopic multiterminal bars, EPL (Europhysics Letters) 77, 47004 (2007). [PDF]


  • A. N. Tahvildar-Zadeh, J. K. Freericks, and B. K. Nikolić, Thouless energy as a unifying concept for Josephson junctions tuned through the Mott metal-insulator transition, Phys. Rev. B 73, 184515 (2006).[PDF]
  • B. K. Nikolić, L. P. Zarbo, and S. Souma, Imaging mesoscopic spin Hall fow: Spatial distribution of local spin currents and spin densities in and out of multiterminal spin-orbit coupled semiconductor nanostructures, Phys. Rev. B 73, 075303 (2006). [PDF]


  • B. K. Nikolić, L. P. Zarbo, and S. Souma, Mesoscopic spin Hall effect in multiprobe spin-orbit coupled ballistic semiconductor bridges, Phys. Rev. B 72, 075361 (2005). [PDF]
  • B. K. Nikolić, L. P. Zarbo, and S. Welack, Transverse spin-orbit force in the spin Hall effect in ballistic quantum wires, Phys. Rev. B 72, 075335 (2005). [PDF]
  • B. K. Nikolić, S. Souma, L. P. Zarbo, and J. Sinova, Nonequilibrium spin Hall accumulation in ballistic semiconductor nanostructures, Phys. Rev. Lett. 95, 046601 (2005). [PDF]
  • J. K. Freericks, A. N. Tahvildar-Zadeh, B. K. Nikolić, Use of a generalized Thouless energy in describing transport properties of Josephson junctions, IEEE Trans. Appl. Supercond. 15, 896 (2005). [PDF]
  • B. K. Nikolić and S. Souma, Decoherence of transported spin in multichannel spin-orbit coupled spintronic devices: Scattering approach to spin density matrix from the ballistic to the localized regime, Phys. Rev. B 71, 195328 (2005). [PDF]
  • S. Souma and B. K. Nikolić, Spin Hall current driven by quantum interferences in mesoscopic Rashba rings, Phys. Rev. Lett. 94, 106602 (2005). [PDF]
  • B. K. Nikolić and R. L. Dragomirova, Quantum transparency of Anderson insulator junctions: Statistics of transmission eigenvalues, shot noise, and proximity conductance, Phys. Rev. B 71, 045308 (2005). [PDF]


  • S. Souma and B. K. Nikolić, Modulating unpolarized current in quantum spintronics: Visibility of spin-interference effects in multichannel Aharonov-Casher mesoscopic rings, Phys. Rev. B 70, 195346 (2004). [PDF]


  • J. K. Freericks, B. K. Nikolić, and P. Miller, Superconductor-correlated metal-superconductor Josephson junctions: An optimized class for high speed digital electronics, IEEE Trans. Appl. Supercond. 13, 1089 (2003). [PDF]
  • V. Dobrosavljevic, A. A. Pastor, and B. K. Nikolić, Typical medium theory of Anderson localization: A local order parameter approach to strong disorder effects, EPL (Europhysics Letters) 62, 76 (2003). [PDF]
  • J. K. Freericks, B. K. Nikolić, and P. Miller, Temperature dependence of superconductor-correlated metal-superconductor Josephson junctions, Appl. Phys. Lett. 82, 970 (2003). [PDF]


  • B. K. Nikolić and V. Z. Cerovski, Structure of quantum disordered wave functions: weak localization, far tails, and mesoscopic transport, Euro. Phys. J. B 30, 227 (2002). [PDF]
  • B. K. Nikolić, Quantum transport through mesoscopic disordered interfaces, junctions, and multilayers, J. Phys.: Condens. Matter 14, 7871 (2002). [PDF]
  • B. K. Nikolić, J. K. Freericks, and P. Miller, Suppression of the "quasiclassical" proximity gap in correlated-metal-superconductor structures, Phys. Rev. Lett. 88, 077002 (2002). [PDF]
  • J. K. Freericks, B. K. Nikolić, and P. Miller, Optimizing the speed of a Josephson junction with dynamical mean-field theory, Int. J. Mod. Phys. B 16, 531 (2002) (review article). [PDF]
  • B. K. Nikolić, J. K. Freericks, and P. Miller, Equilibrium properties of double-screened-dipole-barrier SINIS Josephson junctions, Phys. Rev. B 65, 064529 (2002). [PDF]
  • B. K. Nikolić, Quest for rare events in mesoscopic disordered metals, Phys. Rev. B 65, 012201 (2002). [PDF]


  • B. K. Nikolić, J. K. Freericks, and P. Miller, Intrinsic reduction of Josephson critical current in short ballistic SNS weak links, Phys. Rev. B 64, 212507 (2001). [PDF]
  • B. K. Nikolić, Deconstructing Kubo formula usage: exact conductance of a mesoscopic system from weak to strong disorder limit, Phys. Rev. B 64, 165303 (2001). [PDF]
  • J. K. Freericks, B. K. Nikolić, and P. Miller, Tuning a Josephson junction through a quantum critical point, Phys. Rev. B 64, 054511 (2001). [PDF]
  • B. K. Nikolić, Statistical properties of eigenstates in three-dimensional mesoscopic systems with off-diagonal or diagonal disorder, Phys. Rev. B 64, 014203 (2001). [PDF]
  • B. K. Nikolić and P. B. Allen, Resistivity of a metal between the Boltzmann transport regime and the Anderson transition, Phys. Rev. B 63, 020201(R) (2001). [PDF]


  • B. K. Nikolić and P. B. Allen, Quantum transport in ballistic conductors: transition from conductance quantization to resonant tunneling, J. Phys.: Condens. Matter 12, 9629 (2000). [PDF]


  • P. F. Henning, C. C. Homes, S. Maslov, G. L. Carr, D. N. Basov, B. K. Nikolić, and M. Strongin, Infrared studies of the onset of conductivity in ultrathin Pb films, Phys. Rev. Lett. 83, 4880 (1999). [PDF]
  • B. K. Nikolić and P. B. Allen, Electron transport through a circular constriction, Phys. Rev. B. 60, 3963 (1999). [PDF]