Publications

2023 

Sutter, T., Lee, J., Kulkarni, A., Musumeci, P., & Kogar, A. (2023). Vector-based feedback of continuous wave radiofrequency compression cavity for ultrafast electron diffraction. arXiv preprint arXiv:2311.16400.

Su, Y., Zong, A., Kogar, A., Lu, D., Hong, S. S., Freelon, B., ... & Gedik, N. (2023). Delamination-assisted ultrafast wrinkle formation in a freestanding film. Nano Letters, 23(23), 10772-10778.

Zong, A., Cheng, Y., Wu, L., Meng, Q., Xia, W., Qi, F., ... & Xiang, D. (2023). Femtosecond dual-stage formation of topological defects in a 2D charge density wave. In APS March Meeting Abstracts (Vol. 2023, pp. K38-007).

Freelon, B., Rohwer, T., Zong, A., Kogar, A., Zhou, H., Wong, L. J., ... & Gedik, N. (2023). Design and construction of a compact, high-repetition-rate ultrafast electron diffraction instrument. Review of Scientific Instruments, 94(5).

Carbin, T., Zhang, X., Culver, A. B., Zhao, H., Zong, A., Acharya, R., ... & Kogar, A. (2023). Evidence for Bootstrap Percolation Dynamics in a Photoinduced Phase Transition. Physical Review Letters, 130(18), 186902.

Baldini, E., Zong, A., Choi, D., Lee, C., Michael, M. H., Windgaetter, L., ... & Gedik, N. (2023). The spontaneous symmetry breaking in Ta2NiSe5 is structural in nature. Proceedings of the National Academy of Sciences, 120(17), e2221688120.

2022

Cheng, Y., Zong, A., Li, J., Xia, W., Duan, S., Zhao, W., ... & Zhang, J. (2022). Light-induced dimension crossover dictated by excitonic correlations. Nature communications, 13(1), 963.

2021
Zong, A., Dolgirev, P. E., Kogar, A., Su, Y., Shen, X., Straquadine, J. A., ... & Gedik, N. (2021). Role of equilibrium fluctuations in light-induced order. Physical Review Letters, 127(22), 227401.

Zong, A., Kogar, A., & Gedik, N. (2021). Unconventional light-induced states visualized by ultrafast electron diffraction and microscopy. MRS Bulletin, 46(8), 720-730.

2020 

Rosenzweig, J. B., Majernik, N., Robles, R. R., Andonian, G., Camacho, O., Fukasawa, A., ... & van der Geer, S. B. (2020). An ultra-compact x-ray free-electron laser. New Journal of Physics, 22(9), 093067.

Xu, S. Y., Ma, Q., Gao, Y., Kogar, A., Zong, A., Mier Valdivia, A. M., ... & Gedik, N. (2020). Spontaneous gyrotropic electronic order in a transition-metal dichalcogenide. Nature, 578(7796), 545-549.

Fichera, B. T., Kogar, A., Ye, L., Gökce, B., Zong, A., Checkelsky, J. G., & Gedik, N. (2020). Second harmonic generation as a probe of broken mirror symmetry. Physical Review B, 101(24), 241106.

Dolgirev, P. E., Rozhkov, A. V., Zong, A., Kogar, A., Gedik, N., & Fine, B. V. (2020). Amplitude dynamics of the charge density wave in LaTe 3: theoretical description of pump-probe experiments. Physical Review B, 101(5), 054203.

Kogar, A., Zong, A., Dolgirev, P. E., Shen, X., Straquadine, J., Bie, Y. Q., ... & Gedik, N. (2020). Light-induced charge density wave in LaTe3. Nature Physics, 16(2), 159-163.

2019 

Zong, A., Dolgirev, P. E., Kogar, A., Ergeçen, E., Yilmaz, M. B., Bie, Y. Q., ... & Gedik, N. (2019). Dynamical slowing-down in an ultrafast photoinduced phase transition. Physical review letters, 123(9), 097601.

Zong, A., Kogar, A., Bie, Y. Q., Rohwer, T., Lee, C., Baldini, E., ... & Gedik, N. (2019). Evidence for topological defects in a photoinduced phase transition. Nature Physics, 15(1), 27-31.

2018 

Zong, A., Shen, X., Kogar, A., Ye, L., Marks, C., Chowdhury, D., ... & Gedik, N. (2018). Ultrafast manipulation of mirror domain walls in a charge density wave. Science advances, 4(10), eaau5501.

Mitrano, M., Husain, A. A., Vig, S., Kogar, A., Rak, M. S., Rubeck, S. I., ... & Abbamonte, P. (2018). Anomalous density fluctuations in a strange metal. Proceedings of the National Academy of Sciences, 115(21), 5392-5396.

2017

Kogar, A., Rak, M. S., Vig, S., Husain, A. A., Flicker, F., Joe, Y. I., ... & Abbamonte, P. (2017). Signatures of exciton condensation in a transition metal dichalcogenide. Science, 358(6368), 1314-1317.

Wang, Z., Walkup, D., Derry, P., Scaffidi, T., Rak, M., Vig, S., ... & Madhavan, V. (2017). Quasiparticle interference and strong electron–mode coupling in the quasi-one-dimensional bands of Sr2RuO4. Nature Physics, 13(8), 799-805.

Kogar, A., de La Pena, G. A., Lee, S., Fang, Y., Sun, S. L., Lioi, D. B., ... & Rosenkranz, S. (2017). Observation of a charge density wave incommensuration near the superconducting dome in Cu x TiSe 2. Physical review letters, 118(2), 027002.

Vig, S., Kogar, A., Mitrano, M., Husain, A., Venema, L., Rak, M., ... & Abbamonte, P. (2017). Measurement of the dynamic charge response of materials using low-energy, momentum-resolved electron energy-loss spectroscopy (M-EELS). SciPost Physics, 3(4), 026.

2016

Gan, Y., de la Peña, G. A., Kogar, A., Uchoa, B., Casa, D., Gog, T., ... & Abbamonte, P. (2016). Reexamination of the effective fine structure constant of graphene as measured in graphite. Physical Review B, 93(19), 195150.

2015

Kogar, A., Vig, S., Thaler, A., Wong, M. H., Xiao, Y., Reig-i-Plessis, D., ... & Abbamonte, P. (2015). Surface collective modes in the topological insulators Bi 2 Se 3 and Bi 0.5 Sb 1.5 Te 3− x Se x. Physical review letters, 115(25), 257402.

Gleason, S. L., Gim, Y., Byrum, T., Kogar, A., Abbamonte, P., Fradkin, E., ... & Cooper, S. L. (2015). Structural contributions to the pressure-tuned charge-density-wave to superconductor transition in ZrTe 3: Raman scattering studies. Physical Review B, 91(15), 155124.

Chen, X. M., Miller, A. J., Nugroho, C., De La Peña, G. A., Joe, Y. I., Kogar, A., ... & Abbamonte, P. (2015). Influence of Ti doping on the incommensurate charge density wave in 1 T− TaS 2. Physical Review B, 91(24), 245113.

2013

Kogar, A., Vig, S., Gan, Y., & Abbamonte, P. (2014). Temperature-resolution anomalies in the reconstruction of time dynamics from energy-loss experiments. Journal of Physics B: Atomic, Molecular and Optical Physics, 47(12), 124034.

Gan, Y., Kogar, A., & Abbamonte, P. (2013). Crystallographic refinement of collective excitations using standing wave inelastic X-ray scattering. Chemical Physics, 414, 160-167.

2009 

Vo, S., Fard, H., Kogar, A., & Williams, G. A. (2009, February). Adsorption properties and third sound propagation in superfluid 4He films on carbon nanotubes. In Journal of Physics: Conference Series (Vol. 150, No. 3, p. 032117). IOP Publishing.