2017
(59) Federico Cilento, Giulia Manzoni, Andrea Sterzi, Simone Peli, Andrea Ronchi, Alberto Crepaldi, Fabio Boschini, Cephise Cacho, Richard Chapman, Emma Springate, Hiroshi Eisaki, Martin Greven, Mona Berciu, Alexander F. Kemper, Andrea Damascelli, Massimo Capone, Claudio Giannetti, Fulvio Parmigiani. Antinodal collapse in superconducting copper oxides driven by charge-transfer manipulation. arXiv:1703.03877.
(58) Ankit Kumar, S. Johnston, A. F. Kemper. Identifying a forward scattering superconductor through pump-probe spectroscopy. arXiv:1712.10019
(57) Hadas Soifer, Alexandre Gauthier, A.F. Kemper, Costel R. Rotundu, Shuolong Yang, Hongyu Xiong, Donghui Lu, Makoto Hashimoto, Patrick S. Kirchmann, Jonathan A. Sobota, Zhi-Xun Shen. Band resolved imaging of photocurrent in a topological insulator. arXiv:1712.08694
(56) Avinash Rustagi, Alexander F. Kemper. Theoretical phase diagram for the room temperature Electron-Hole Liquid in photo-excited quasi-2D monolayer MoS2. Accepted for publication in ACS Nano Letters.
(55) A.F. Kemper, O. Abdurazakov, J.K. Freericks. General principles for the non-equilibrium relaxation of populations in quantum materials. arXiv:1708.05725.
(54) G. Coslovich, A.F. Kemper, S. Behl, B. Huber, H. A. Bechtel, T. Sasagawa, M. C. Martin, A. Lanzara, and R. A. Kaindl. Ultrafast Dynamics of Vibrational Symmetry Breaking in a Charge-ordered Nickelate. Science Advances 24 Nov 2017:
Vol. 3, no. 11, e1600735.
(53) B. Nosarzewski, B. Moritz, J. K. Freericks, A. F. Kemper, T. P. Devereaux. Amplitude mode oscillations in pump-probe photoemission spectra from a d-wave superconductor. Phys. Rev. B 96, 184518 (2017).
(52) A.F. Kemper, M. A. Sentef, B. Moritz, T. P. Devereaux, J. K. Freericks. Review of the theoretical description of time-resolved angle-resolved photoemission spectroscopy in electron-phonon mediated superconductors. Annalen Der Physik 2017, 1600235.
(51) H.-H. Kung, M. Salehi, I. Boulares, A. F. Kemper, N. Koirala, M. Brahlek, P. Lošťák, C. Uher, R. Merlin, X. Wang, S.-W. Cheong, S. Oh, G. Blumberg. Surface vibrational modes of the topological insulator Bi2Se3 observed by Raman spectroscopy. Phys. Rev. B 95, 245406 (2017)
(50) J. K. Freericks, O. Abdurazakov, A. F. Kemper, Relaxation of nonequilibrium populations after a pump: the breaking of Mathiessen’s rule, Proc. SPIE 10193, Ultrafast Bandgap Photonics II, 1019303.
(49) H. Hübener, M.A. Sentef, U. de Giovannini, A.F. Kemper, A. Rubio. Creating stable Floquet-Weyl semimetals by laser-driving of 3D Dirac materials. Nature Communications 8,13940 (2017)
2016
(48) A. F. Kemper, H. R. Krishnamurthy, J. K. Freericks. The role of average time dependence on the relaxation of excited electron populations in nonequilibrium many-body physics. Fortschr. Phys. (2016)
(47) C. Jozwiak, J.A. Sobota, K. Gotlieb, A.F. Kemper, C.R. Rotundu, R.J. Birgeneau, Z. Hussain, D.-H. Lee, Z.-X. Shen, and A. Lanzara. Spin-Polarized Surface Resonances Accompanying Topological Surface State Formation. Nature Communications 7, 13143 (2016).
(46) A.F. Kemper and J.K. Freericks. Relationship between Population Dynamics and the Self-Energy in Driven Non- Equilibrium Systems. Invited paper, Entropy 2016, 18(5), 180
(45) J. D. Rameau, S. Freutel, A.F. Kemper, M.A. Sentef, J. K. Freericks, I. Avigo, M. Ligges, L. Rettig, Y. Yoshida, H. Eisaki, J. Schneeloch, R. D. Zhong, Z. J. Xu, G. D. Gu, P. D. Johnson and U. Bovensiepen. Energy dissipation in the time domain governed by bosons in a correlated material. Nature Communications 7, 13761 (2016).
(44) J.P. Hinton, E. Thewalt, Z. Alpichshev, F. Mahmood, J.D. Koralek, M.K. Chan, M.J. Veit, C.J. Dorow, N. Barisic, A.F. Kemper, D.A. Bonn, W.N. Hardy, Ruixing Liang, N. Gedik, M. Greven, A. Lanzara and J. Orenstein. The rate of quasiparticle recombination probes the onset of coherence in cuprate superconductors. Nature Scientific Reports 6, 23610 (2016).
(43) M.A. Sentef, A.F. Kemper, A. Georges and C. Kollath. Theory of light-enhanced phonon-mediated superconductivity. Phys. Rev. B 93, 144506 (2016).
(42) R. G. Moore, W. S. Lee, P. S. Kirchmann, Y. D. Chuang, A.F. Kemper, M. Trigo, L. Patthey, D.H. Lu, O. Krupin, M. Yi, D.A. Reis, D. Doering, P. Denes, W.F. Schlotter, J.J. Turner, G. Hays, P. Hering, T. Benson, J.-H. Chu, T.P. Devereaux, I.R. Fisher, Z. Hussain and Z.-X. Shen. Ultrafast lattice dynamics of the electronically driven, lattice directed charge density wave in TbTe3. Phys. Rev. B 93, 024304 (2016).
2015
(41) A.F. Kemper, M. A. Sentef, B. Moritz, J. K. Freericks, and T. P. Devereaux. Direct observation of Higgs mode oscillations in the pump-probe photoemission spectra of electron-phonon mediated superconductors. Phys. Rev. B 92, 224517 (2015).
(40) M. Yi, Meng Wang, A. F. Kemper, S.-K. Mo, Z. Hussain, E. Bourret-Courchesne, A. Lanzara, M. Hashimoto, D. H. Lu, Z.-X. Shen, Robert J. Birgeneau. Bandwidth and Electron Correlation-Tuned Superconductivity in Rb0.8Fe2(Se1-zSz)2. Phys. Rev. Lett. 115, 256403 (2015).
(39) M.C. Langner, S. Roy, A.F. Kemper, Y.-D. Chuang, S.K. Mishra, R. Versteeg, Y. Zhu, M.P. Hertlein, T.E. Glover, K. Dumesnil, R.W. Schoenlein. Scattering bottleneck for spin dynamics in metallic helical antiferromagnetic dysprosium. Phys. Rev. B 92, 184423 (2015).
(38) Shuolong Yang, J.A. Sobota, D. Leuenberger, A.F. Kemper, J.J. Lee, F.T. Schmitt, W. Li, R.G. Moore, P.S. Kirchmann, and Z.-X. Shen. Thickness-Dependent Coherent Phonon Frequency in Ultrathin FeSe/SrTiO3 Films. Nano Lett., 2015, 15 (6), 4150-4154.
(37) D. Leuenberger, J. A. Sobota, S.-L. Yang, A.F. Kemper, P. Giraldo-Gallo, R. G. Moore, I. R. Fisher, P. S. Kirchmann, T. P. Devereaux and Z.-X. Shen. Classification of Collective Modes in a Charge Density Wave by Momentum-Dependent Modulation of the Electronic Band Structure. Phys. Rev. B 91, 201106(R) (2015).
(36) S. Gerber, K. W. Kim, Y. Zhang, D. Zhu, N. Plonka, M. Yi, G. L. Dakovski, D. Leuenberger, P.S. Kirchmann, R. G. Moore, M. Chollet, J. M. Glownia, Y. Feng, J.-S. Lee, A. Mehta, A. F. Kemper, T. Wolf, Y.-D. Chuang, Z. Hussain, C.-C. Kao, B. Moritz, Z.-X. Shen, T. P. Devereaux and W.-S. Lee. Direct characterisation of photo-induced femtosecond lattice dynamics in BaFe2As2. Nature Communications 6, 7337 (2015).
(35) D.J. Arenas, Carl Middleton and A.F. Kemper. First-principles study of the phonon modes in bismuth-sillenites. Phys. Rev. B 91, 144103 (2015).
(34) M.A. Sentef, M. Claassen, A.F. Kemper, B. Moritz, T. Oka, J.K. Freericks and T.P. Devereaux. Theory of pump-probe photoemission in graphene: Ultrafast tuning of Floquet bands and local pseudospin textures. Nature Communications 6, 7047 (2015).
(33) F. Liu, L. Lin, D. Vigil-Fowler, J. Lischner, A.F. Kemper, S. Sharifzadeh, F.H. da Jornada, J. Deslippe, C. Yang, J.B. Neaton, and S.G. Louie. Numerical integration for ab initio many-electron self energy calculations within the GW approximation. Journal of Computational Physics, Volume 286, p. 1-1 (2015).
2014
(32) T. Böhm, A.F Kemper, B. Moritz, F. Kretzschmar, B. Muschler,H.-M. Eiter, R. Hackl, T.P. Devereaux, D.J. Scalapino, and Hai-Hu Wen. A balancing act: Evidence for a strong subdominant $d$-wave pairing channel inBa0.6K0.4Fe2As2. Phys. Rev. X 4, 041046 (2014).
(31) J. Kang, A.F. Kemper and R.M. Fernandes. Manipulation of gap nodes by uniaxial strain in iron-based superconductors. Phys. Rev. Lett. 113, 217001 (2014).
(30) J.A. Sobota, S.-L. Yang, D. Leuenberger, A.F. Kemper, J.G. Analytis, I.R. Fisher, P.S. Kirchmann, T.P. Devereaux, Z.-X. Shen. Distinguishing Bulk and Surface Electron-Phonon Coupling in a Photoexcited Topological Insulator. Phys. Rev. Lett. 113, 157401 (2014).
(29) Wen Shen, A.F. Kemper, T.P. Devereaux and J.K. Freericks. Exact solution for high harmonic generation and the response to an AC driving field for a charge density wave insulator. Phys. Rev. B 90, 115113 (2014).
(28) A.F. Kemper, M.A. Sentef, B. Moritz, J.K. Freericks and T.P. Devereaux. Effect of dynamical spectral weight distribution on effective interactions in time-resolved spectroscopy. Phys. Rev. B 90, 075126 (2014).
(27) J.A. Sobota, S.-L. Yang, D. Leuenberger, A.F. Kemper, J.G. Analytis, I.R. Fisher, P.S. Kirchmann, T.P. Devereaux, Z.-X. Shen. Ultrafast electron dynamics in the topological insulator Bi2Se3 studied by time-resolved photoemission spectroscopy. Journal of Electron Spectroscopy and Related Phenomena 195, 249, (2014).
(26) J.K. Freericks, K. Najafi, A.F. Kemper and T.P. Devereaux. Nonequilibrium sum rules for the Holstein model. Conference Proceedings for FEIS 2013, arXiv:1403.5604.
(25) S. Wang, A.F. Kemper, M. Baldini, M.C. Shapiro, S.C. Riggs, Z. Zhao, Z. Liu, T.P. Devereaux, T.H. Geballe, I.R. Fisher, W.L. Mao. Bandgap closure and reopening in CsAuI3 at high pressure. Phys. Rev. B 89, 245109 (2014).
(24) M. Yi, Y. Zhang, Z.-K. Liu, X. Ding, J.-H. Chu, A.F. Kemper, N. Plonka, B. Moritz, M. Hashimoto, S.-K. Mo, Z. Hussain, T. P. Devereaux, I. R. Fisher, H. H. Wen, Z.-X. Shen, D. H. Lu. Dynamic competition between spin-density wave order and superconductivity in under doped Ba1-xKxFe2As2. Nat. Comm. 5, 3711 (2014).
2013
(23) Michael Sentef, A.F. Kemper, B. Moritz, and T.P. Devereaux. Examining electron-boson coupling using time-resolved spectroscopy. Phys. Rev. X 3, 041033 (2013).
(22) A.F. Kemper, Michael Sentef, B. Moritz, and T.P. Devereaux. Mapping the unoccupied states and relevant bosonic modes via the time dependent momentum distribution. Phys. Rev. B 87, 235139 (2013).
(21) N. Plonka, A.F. Kemper, S. Graser, A.P. Kampf, T.P. Devereaux. Tunneling spectroscopy for probing orbital anisotropy in iron pnictides. Phys. Rev. B 88, 174518 (2013).
(20) J.A. Sobota, S.-L. Yang, A.F. Kemper, J.J. Lee, F.T. Schmitt, W. Li, R.G. Moore, J.G. Analytis, I.R. Fisher, P.S. Kirchmann, T.P. Devereaux and Z.-X. Shen. Direct optical coupling to an unoccupied Dirac surface state in the topological insulator Bi2Se3. Phys. Rev. Lett. 111, 136802 (2013).
(19) Y. F. Kung, W.-S. Lee, C.-C. Chen, A.F. Kemper, A. P. Sorini, B. Moritz, and T. P. Devereaux. Time-dependent charge-order and spin-order recovery in striped systems. Phys. Rev. B 88, 125114 (2013).
(18) B. Moritz, A.F. Kemper, Michael Sentef, T.P. Devereaux, and J.K. Freericks. Electron-Mediated Relaxation Following Ultrafast Pumping of Strongly Correlated Materials: Model Evidence of a Correlation-Tuned Crossover between Thermal and Nonthermal States. Phys. Rev. Lett. 111, 077401 (2013).
(17) Y. S. Lee, S. J. Moon, Scott C. Riggs, M. C. Shapiro, I. R. Fisher, Bradford W. Fulfer, Julia Y. Chan, A.F. Kemper, and D. N. Basov. Infrared study of the electronic structure of the metallic pyrochlore iridate Bi2Ir2O7. Phys. Rev. B 87, 195143 (2013).
(16) R. Hamdan, A.F. Kemper, C. Cao and H.P. Cheng. Structure and functionality of bromine doped graphite. J. Chem. Phys. 138, 164702 (2013).
(15) K. G. Rana, T. Yajima, S. Parui, A.F. Kemper, T. P. Devereaux, Y. Hikita, H.Y. Hwang, T. Banerjee. Hot electron transport in a strongly correlated transition-metal oxide. Nature Scientific Reports, 3, 1274 (2013).
(14) A.F. Kemper, B. Moritz, J.K. Freericks, and T.P. Devereaux. Theoretical description of high-order harmonic generation in bulk crystals in the non-equilibrium Keldysh formalism. New J. Phys. 15 (2013) 023003.
(13) H.-M. Eiter, M. Lavagnini, R. Hackl,E. A. Nowadnick, A.F. Kemper, T.P. Devereaux, J.-H. Chu, J. G. Analytis, I.R. Fisher, and L. Degiorgi. Alternative route to charge density wave formation in multiband systems. PNAS 110(1), 64-69 (2013).
2012
(12) J.K. Freericks, A.Y. Liu, A.F. Kemper and T.P. Devereaux. Pulsed high harmonic generation of light due to pumped Bloch oscillations in noninteracting metals. Physica Scripta, Volume 151, Issue , pp. 014062 (2012).
(11) Manoj K. Srivastava, Yan Wang, A.F. Kemper, and Hai-Ping Cheng. Density functional study of gold and iron clusters on perfect and defected graphene. Physical Review B 85, 165444 (2012).
(10) W. S. Lee, Y. D. Chuang, R. G. Moore, L. Patthey, M. Trigo, D.-H. Lu, P. S. Kirchmann, M. Yi, O. Krupin, M. Langner, N. Huse, J. S. Robinson, Y. Chen, Y . Zhu, S. Y. Zhou, D. A. Reis, R. A. Kaindl, R. W. Schoenlein, D. Doering, P. Denes, W. F. Schlotter, J. J. Turner, S. L. Johnson, M. F\"orst, T. Sasagawa, Y. F. Kung, A.P. Sorini, A.F. Kemper, B. Moritz, T.P. Devereaux, D.-H. Lee, Z. X. Shen, and Z. Hussain. Phase fluctuations and the absence of topological defects in a photo-excited charge-ordered nickelate. Nature Communications 3, 838 (2012).
2011
(9) A.F. Kemper, M. M. Korshunov, T.P. Devereaux, J. N. Fry, H-P. Cheng, and P. J. Hirschfeld. Anisotropic quasiparticle lifetimes in Fe-based superconductors. Physical Review B 83, 184516 (2011).
(8) M. Yi, D. H. Lu, J.-H. Chu, J. G. Analytis, A.P. Sorini, A.F. Kemper, S.-K. Mo, R. G. Moore, M. Hashimoto, W. S. Lee, Z. Hussain, T.P. Devereaux, I.R. Fisher, and Z.-X. Shen. Symmetry breaking orbital anisotropy on detwinned Ba(Fe1-xCox)2As2 above the spin density wave transition. Proceedings of the National Academy of Sciences April 26, 2011 vol. 108 no. 17 6878-6883.
(7) C.C. Chen, C.J. Jia, A.F. Kemper, R.R.P. Singh, and T.P. Devereaux. Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides. Physical Review Letters 106, 067002 (2011).
2010
(6) S. Graser, A.F. Kemper, T. A. Maier, H.-P. Cheng, P. J. Hirschfeld, and D. J. Scalapino. Spin fluctuations and superconductivity in a three-dimensional tight-binding model for BaFe2As2. Phys. Rev. B 81, 214503 (2010).
(5) A.F. Kemper, T.A. Maier, S. Graser, H-P. Cheng, P.J. Hirschfeld, and D.J. Scalapino. Sensitivity of the superconducting state and magnetic susceptibility to key aspects of electronic structure in ferropnictides. New Journal of Physics 12 073030 (2010). Article selected for the New Journal of Physics 'Best of 2010'.
2009
(4) A.F. Kemper, C. Cao, P.J. Hirschfeld, and H.-P. Cheng.. Effects of cobalt doping and three-dimensionality in BaFe2As2. Physical Review B 80, 104511 (2009).
(3) A.F. Kemper, D.G.S.P. Doluweera, T.A. Maier, M. Jarrell and P.J. Hirschfeld and H-P. Cheng. Insensitivity of d-wave pairing to disorder in the high-temperature cuprate superconductors. Physical Review B 79, 104502 (2009).
(2) A.F. Kemper, H-P. Cheng, N. Kébaïli, S. Benrezzak, M. Schmidt, A. Masson and C. Br\'{e}chignac. Curvature effect on the interaction between folded graphitic surface and silver clusters. Physical Review B 79, 193403 (2009).
(1) C. Cao, A.F. Kemper, Luis Agapito, Jian-Wei Zhang, Yao He, Andrew Rinzler, Hai-Ping Cheng, X.-G. Zhang, Alexandre Reily Rocha, and Stefano Sanvito.. Nonequilibrium Green's function study of Pd4-cluster-functionalized carbon nanotubes as hydrogen sensors. Physical Review B 79, 075127 (2009).