Ultrafast photoemission electron microscopy: A multidimensional probe of nonequilibrium physics
Yanan Dai(戴亚南)1,2,†
1 Department of Physics, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China; 2 Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen 518045, China
Abstract Exploring the realms of physics that extend beyond thermal equilibrium has emerged as a crucial branch of condensed matter physics research. It aims to unravel the intricate processes involving the excitations, interactions, and annihilations of quasi- and many-body particles, and ultimately to achieve the manipulation and engineering of exotic non-equilibrium quantum phases on the ultrasmall and ultrafast spatiotemporal scales. Given the inherent complexities arising from many-body dynamics, it therefore seeks a technique that has efficient and diverse detection degrees of freedom to study the underlying physics. By combining high-power femtosecond lasers with real- or momentum-space photoemission electron microscopy (PEEM), imaging excited state phenomena from multiple perspectives, including time, real space, energy, momentum, and spin, can be conveniently achieved, making it a unique technique in studying physics out of equilibrium. In this context, we overview the working principle and technical advances of the PEEM apparatus and the related laser systems, and survey key excited-state phenomena probed through this surface-sensitive methodology, including the ultrafast dynamics of electrons, excitons, plasmons, spins, etc., in materials ranging from bulk and nano-structured metals and semiconductors to low-dimensional quantum materials. Through this review, one can further envision that time-resolved PEEM will open new avenues for investigating a variety of classical and quantum phenomena in a multidimensional parameter space, offering unprecedented and comprehensive insights into important questions in the field of condensed matter physics.
Received: 11 October 2023
Revised: 19 December 2023
Accepted manuscript online: 20 December 2023
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12374223) and Shenzhen Science and Technology Program (Grant No. 20231117151322001).
Corresponding Authors:
Yanan Dai
E-mail: daiyn@sustech.edu.cn
Cite this article:
Yanan Dai(戴亚南) Ultrafast photoemission electron microscopy: A multidimensional probe of nonequilibrium physics 2024 Chin. Phys. B 33 038703
[1] Hertz H 1887 Ann. Phys.267 421 [2] Einstein A 1905 Annalen der Physik10 891 [3] Brüche E 1933 Z. Phys.86 448 [4] Yang W C, Rodriguez B J, Gruverman A and Nemanich R 2004 Appl. Phys. Lett.85 2316 [5] Höfer A, Fechner M, Duncker K, Hölzer M, Mertig I and Widdra W 2012 Phys. Rev. Lett.108 087602 [6] Scholl A 2003 Curr. Opin. Solid. St. M.7 59 [7] Zhao T, Scholl A, Zavaliche F, Lee K, Barry M, Doran A, Cruz M P, Chu Y H, Ederer C, Spaldin N A, Das R R, Kim D M, Baek S H, Eom C B and Ramesh R 2006 Nat. Mater.5 823 [8] Heron J T, Trassin M, Ashraf K, Gajek M, He Q, Yang S Y, Nikonov D E, Chu Y H, Salahuddin S and Ramesh R 2011 Phys. Rev. Lett.107 217202 [9] Burkhardt M H, Hossain M, Sarkar S, Chuang Y D, Gonzalez A C, Doran A, Scholl A, Young A, Tahir N and Choi Y 2012 Phys. Rev. Lett.108 237202 [10] Shimojima T, Motoyui Y, Taniuchi T, Bareille C, Onari S, Kontani H, Nakajima M, Kasahara S, Shibauchi T and Matsuda Y 2021 Science373 1122 [11] Lupi S, Baldassarre L, Mansart B, et al. 2010 Nat. Commun.1 105 [12] Mattoni G, Zubko P, Maccherozzi F, van der Torren A J H, Boltje D B, Hadjimichael M, Manca N, Catalano S, Gibert M, Liu Y, Aarts J, Triscone J M, Dhesi S S and Caviglia A D 2016 Nat. Commun.7 13141 [13] Ronchi A, Homm P, Menghini M, Franceschini P, Maccherozzi F, Banfi F, Ferrini G, Cilento F, Parmigiani F, Dhesi S S, Fabrizio M, Locquet J P and Giannetti C 2019 Phys. Rev. B100 075111 [14] Davis T J, Janoschka D, Dreher P, Frank B, Meyer Zu Heringdorf F J and Giessen H 2020 Science368 eaba6415 [15] Dai Y, Zhou Z, Ghosh A, Mong R S K, Kubo A, Huang C B and Petek H 2020 Nature588 616 [16] Huber B, Pres S, Wittmann E, Dietrich L, Lüttig J, Fersch D, Krauss E, Friedrich D, Kern J and Lisinetskii V 2019 Rev. Sci. Instrum.90 113103 [17] Taniuchi T, Kotani Y and Shin S 2015 Rev. Sci. Instrum.86 023701 [18] Basov D N, Averitt R D and Hsieh D 2017 Nat. Mater.16 1077 [19] Krömker B, Escher M, Funnemann D, Hartung D, Engelhard H and Kirschner J 2008 Rev. Sci. Instrum.79 053702 [20] Yang H, Liang A, Chen C, Zhang C, Schroeter N B M and Chen Y 2018 Nat. Rev. Mater.3 341 [21] Sobota J A, He Y and Shen Z X 2020 Rev. Mod. Phys.93 025006 [22] Giustino F, Lee J H, Trier F, Bibes M, Winter S M, Valentí R, Son Y W, Taillefer L, Heil C and Figueroa A I 2021 J. Phys. Mater.3 042006 [23] Damascelli A, Hussain Z and Shen Z X 2003 Rev. Mod. Phys.75 473 [24] Lv B, Qian T and Ding H 2019 Nat. Rev. Phys.1 609 [25] Ohta T, Bostwick A, Seyller T, Horn K and Rotenberg E 2006 Science313 951 [26] Bostwick A, Ohta T, Seyller T, Horn K and Rotenberg E 2007 Nat. Phys.3 36 [27] Zhou S Y, Gweon G H, Fedorov A V, First P N, de Heer W A, Lee D H, Guinea F, Castro Neto A H and Lanzara A 2007 Nat. Mater.6 770 [28] Yuan H, Liu Z, Xu G, et al. 2016 Nano Lett.16 4738 [29] Wilson N R, Nguyen P V, Seyler K, Rivera P, Marsden A J, Laker Z P L, Constantinescu G C, Kandyba V, Barinov A, Hine N D M, Xu X and Cobden D H 2017 Sci. Adv.3 e1601832 [30] Tusche C, Krasyuk A and Kirschner J 2015 Ultramicroscopy159 520 [31] Tusche C, Ellguth M, Unal A, Chiang C T, Winkelmann A, Krasyuk A, Hahn M, Schonhense G and Kirschner J 2011 Appl. Phys. Lett.99 032505 [32] Schmitt D, Bange J P, Bennecke W, Meneghini G, AlMutairi A, Merboldt M, Pöhls J, Watanabe K, Taniguchi T and Steil S 2023 arXiv:2305.18908 [cond-mat.mes-hall] [2305.18908] Ultrafast nano-imaging of dark excitons (arxiv.org) [33] Maklar J, Walmsley P, Fisher I and Rettig L 2023 Ultrafast spatiotemporal dynamics of a charge-density wave using femtosecond dark-field momentum microscopy SPIE, p. 3 [34] Jin W and Osgood R M 2019 Adv. Phys.: X4 1688187 [35] Acín A, Bloch I, Buhrman H, Calarco T, Eichler C, Eisert J, Esteve D, Gisin N, Glaser S J and Jelezko F 2018 New. J. Phys.20 080201 [36] Nayak C, Simon S H, Stern A, Freedman M and Sarma S D 2008 Rev. Mod. Phys.80 1083 [37] Schönhense G, Babenkov S, Vasilyev D, Elmers H J and Medjanik K 2020 Rev. Sci. Instrum.91 123110 [38] Tusche C, Chen Y J, Schneider C M and Kirschner J 2019 Ultramicroscopy206 112815 [39] Chumak A V, Vasyuchka V I, Serga A A and Hillebrands B 2015 Nat. Phys.11 453 [40] Hirohata A, Yamada K, Nakatani Y, Prejbeanu I L, Diény B, Pirro P and Hillebrands B 2020 J. Magn. Magn. Mater.509 166711 [41] Strickland D and Mourou G 1985 Opt. Commun.55 447 [42] Zewail A H 2000 Angew Chem Int Ed Engl39 2586 [43] Karni O, Esin I and Dani K M 2022 Adv. Mater.35 2204120 [44] Dąbrowski M, Dai Y and Petek H 2020 Chem. Rev.120 6247 [45] Sun Q, Zu S and Misawa H 2020 J. Chem. Phys.153 120902 [46] Qin Y, Wang R and Liu Y 2023 Sci. Sin.: Phys. Mech. Astron.53 100003 [47] Schmidt O, Bauer M, Wiemann C, Porath R, Scharte M, Andreyev O, Schönhense G and Aeschlimann M 2002 Appl. Phys. B74 223 [48] Kubo A, Onda K, Petek H, Sun Z, Jung Y S and Kim H K 2005 Nano Lett.5 1123 [49] Kubo A, Pontius N and Petek H 2007 Nano Lett.7 470 [50] Stockman M I, Kling M F, Kleineberg U and Krausz F 2007 Nat. Photonics1 539 [51] Sun Q, Ueno K, Yu H, Kubo A, Matsuo Y and Misawa H 2013 Light Sci. Appl.2 e118 [52] Gong Y, Joly A G, Hu D, El-Khoury P Z and Hess W P 2015 Nano Lett.15 3472 [53] Mårsell E, Losquin A, Svärd R, Miranda M, Guo C, Harth A, Lorek E, Mauritsson J, Arnold C L, Xu H, L'Huillier A and Mikkelsen A 2015 Nano Lett.15 6601 [54] Aeschlimann M, Brixner T, Cinchetti M, Frisch B, Hecht B, Hensen M, Huber B, Kramer C, Krauss E, Loeber T H, Pfeiffer W, Piecuch M and Thielen P 2017 Light Sci. Appl.6 e17111 [55] Spektor G, Kilbane D, Mahro A K, Frank B, Ristok S, Gal L, Kahl P, Podbiel D, Mathias S, Giessen H, Meyer Zu Heringdorf F J, Orenstein M and Aeschlimann M 2017 Science355 1187 [56] Word R C and Könenkamp R 2017 Ultramicroscopy183 43 [57] Klick A, Groβmann M, Beewen M, Bittorf P, Fiutowski J, Leiβner T, Rubahn H G, Reinhardt C, Elmers H J and Bauer M 2019 Rev. Sci. Instrum.90 053704 [58] Spektor G, Kilbane D, Mahro A K, Hartelt M, Prinz E, Aeschlimann M and Orenstein M 2019 Phys. Rev. X9 021031 [59] Li Y, Sun Q, Zu S, Shi X, Liu Y, Hu X, Ueno K, Gong Q and Misawa H 2020 Phys. Rev. Lett.124 163901 [60] Zhao Z, Lang P, Qin Y, Ji B, Song X and Lin J 2020 Opt. Express28 19023 [61] Dai Y, Zhou Z, Ghosh A, Kapoor K, Dąbrowski M, Kubo A, Huang C B and Petek H 2022 Appl. Phys. Rev.9 011420 [62] Dreher P, Janoschka D, Frank B, Giessen H and Meyer zu Heringdorf F J 2023 Commun. Phys.6 15 [63] Pres S, Huber B, Hensen M, Fersch D, Schatz E, Friedrich D, Lisinetskii V, Pompe R, Hecht B, Pfeiffer W and Brixner T 2023 Nat. Phys.19 656 [64] Gliserin A, Chew S H, Choi S, Kim K, Hallinan Jr D T, Oh J W, Kim S and Kim D E 2019 Rev. Sci. Instrum.90 093904 [65] Vogel J, Kuch W, Bonfim M, Camarero J, Pennec Y, Offi F, Fukumoto K, Kirschner J, Fontaine A and Pizzini S 2003 Appl. Phys. Lett.82 2299 [66] Krasyuk A, Oelsner A, Nepijko S, Kuksov A, Schneider C and Schönhense G 2003 Appl. Phys. A76 863 [67] Choe S B, Acremann Y, Scholl A, Bauer A, Doran A, Stöhr J and Padmore H A 2004 Science304 420 [68] Guslienko K Y, Han X F, Keavney D J, Divan R and Bader S D 2006 Phys. Rev. Lett.96 067205 [69] Miguel J, Sánchez-Barriga J, Bayer D, Kurde J, Heitkamp B, Piantek M, Kronast F, Aeschlimann M, Dürr H and Kuch W 2009 J. Condens.: Matter Phys.21 496001 [70] Raabe J, Quitmann C, Back C, Nolting F, Johnson S and Buehler C 2005 Phys. Rev. Lett.94 217204 [71] Fukumoto K, Onda K, Yamada Y, Matsuki T, Mukuta T, Tanaka S I and Koshihara S Y 2014 Rev. Sci. Instrum.85 083705 [72] Fukumoto K, Yamada Y, Onda K and Koshihara S Y 2014 Appl. Phys. Lett.104 053117 [73] Man M K, Margiolakis A, Deckoff-Jones S, Harada T, Wong E L, Krishna M B, Madeo J, Winchester A, Lei S, Vajtai R, Ajayan P M and Dani K M 2017 Nat. Nanotechnol.12 36 [74] Doherty T A S, Winchester A J, Macpherson S, et al. 2020 Nature580 360 [75] Macpherson S, Doherty T A S, Winchester A J, Kosar S, Johnstone D N, Chiang Y H, Galkowski K, Anaya M, Frohna K, Iqbal A N, Nagane S, Roose B, Andaji-Garmaroudi Z, Orr K W P, Parker J E, Midgley P A, Dani K M and Stranks S D 2022 Nature607 294 [76] Wang L, Xu C, Li M Y, Li L J and Loh Z H 2018 Nano Lett.18 5172 [77] Li Y, Liu W, Wang Y, Xue Z, Leng Y C, Hu A, Yang H, Tan P H, Liu Y and Misawa H 2020 Nano Lett.20 3747 [78] Ulstrup S, Katoch J, Koch R J, Schwarz D, Singh S, McCreary K M, Yoo H K, Xu J, Jonker B T and Kawakami R K 2016 ACS Nano10 10058 [79] Zhong J H, Vogelsang J, Yi J M, Wang D, Wittenbecher L, Mikaelsson S, Korte A, Chimeh A, Arnold C L, Schaaf P, Runge E, Huillier A L, Mikkelsen A and Lienau C 2020 Nat. Commun.11 1464 [80] Wittenbecher L, Viñas Boström E, Vogelsang J, Lehman S, Dick K A, Verdozzi C, Zigmantas D and Mikkelsen A 2021 ACS Nano15 1133 [81] Madeo J, Man M K L, Sahoo C, Campbell M, Pareek V, Wong E L, Al-Mahboob A, Chan N S, Karmakar A, Mariserla B M K, Li X Q, Heinz T F, Cao T and Dani K M 2020 Science370 1199 [82] Jansen G, Keunecke M, Düvel M, Möller C, Schmitt D, Bennecke W, Kappert F, Steil D, Luke D and Steil S 2020 New. J. Phys.22 063012 [83] Wallauer R, Perea-Causin R, Münster L, Zajusch S, Brem S, Güdde J, Tanimura K, Lin K Q, Huber R and Malic E 2021 Nano Lett.21 5867 [84] Dong S, Puppin M, Pincelli T, Beaulieu S, Christiansen D, Hübener H, Nicholson C W, Xian R P, Dendzik M and Deng Y 2021 Nat. Sci.1 e10010 [85] Hartelt M, Terekhin P N, Eul T, Mahro A K, Frisch B, Prinz E, Rethfeld B, Stadtmüller B and Aeschlimann M 2021 ACS Nano15 19559 [86] Schmitt D, Bange J P, Bennecke W, AlMutairi A, Meneghini G, Watanabe K, Taniguchi T, Steil D, Luke D R and Weitz R T 2022 Nature608 499 [87] Maklar J, Stühler R l, Dendzik M, Pincelli T, Dong S, Beaulieu S, Neef A, Li G, Wolf M and Ernstorfer R 2022 Nano Lett.22 5420 [88] Karni O, Barré E, Pareek V, Georgaras J D, Man M K, Sahoo C, Bacon D R, Zhu X, Ribeiro H B and O'Beirne A L 2022 Nature603 247 [89] Baumgärtner K, Reuner M, Metzger C, Kutnyakhov D, Heber M, Pressacco F, Min C H, Peixoto T R, Reiser M and Kim C 2022 Nat. Commun.13 2741 [90] Li A, Reutzel M, Wang Z, Schmitt D, Keunecke M, Bennecke W, Jansen G M, Steil D, Steil S and Novko D 2022 Phys. Rev. B105 075105 [91] Wallauer R, Raths M, Stallberg K, Munster L, Brandstetter D, Yang X, Gudde J, Puschnig P, Soubatch S, Kumpf C, Bocquet F C, Tautz F S and Hofer U 2021 Science371 1056 [92] Lloyd-Hughes J, Oppeneer P, dos Santos T P, Schleife A, Meng S, Sentef M A, Ruggenthaler M, Rubio A, Radu I and Murnane M 2021 J. Condens. Matter Phys.33 353001 [93] de la Torre A, Kennes D M, Claassen M, Gerber S, McIver J W and Sentef M A 2021 Rev. Mod. Phys.93 041002 [94] Liu H, Cao H and Meng S 2023 Prog. Surf. Sci.98 100705 [95] Bloch J, Cavalleri A, Galitski V, Hafezi M and Rubio A 2022 Nature606 41 [96] Fausti D, Tobey R, Dean N, Kaiser S, Dienst A, Hoffmann M C, Pyon S, Takayama T, Takagi H and Cavalleri A 2011 Science331 189 [97] Budden M, Gebert T, Buzzi M, Jotzu G, Wang E, Matsuyama T, Meier G, Laplace Y, Pontiroli D and Ricc'o M 2021 Nat. Phys.17 611 [98] Mitrano M, Cantaluppi A, Nicoletti D, Kaiser S, Perucchi A, Lupi S, Di Pietro P, Pontiroli D, Ricc'o M and Clark S R 2016 Nature530 461 [99] Kogar A, Zong A, Dolgirev P E, Shen X, Straquadine J, Bie Y Q, Wang X, Rohwer T, Tung I C and Yang Y 2020 Nat. Phys.16 159 [100] Gao F Y, Zhang Z, Sun Z, Ye L, Cheng Y H, Liu Z J, Checkelsky J G, Baldini E and Nelson K A 2022 Sci. Adv.8 eabp9076 [101] Nova T, Disa A, Fechner M and Cavalleri A 2019 Science364 1075 [102] Li X, Qiu T, Zhang J, Baldini E, Lu J, Rappe A M and Nelson K A 2019 Science364 1079 [103] Först M, Manzoni C, Kaiser S, Tomioka Y, Tokura Y N, Merlin R and Cavalleri A 2011 Nat. Phys.7 854 [104] Mahmood F, Chan C K, Alpichshev Z, Gardner D, Lee Y, Lee P A and Gedik N 2016 Nat. Phys.12 306 [105] Wang Y, Steinberg H, Jarillo-Herrero P and Gedik N 2013 Science342 453 [106] Dombi P, Pápa Z, Vogelsang J, Yalunin S V, Sivis M, Herink G, Schäfer S, Groβ P, Ropers C and Lienau C 2020 Rev. Mod. Phys.92 025003 [107] Fowler R H 1931 Phys. Rev.38 45 [108] DuBridge L A 1933 Phys. Rev.43 727 [109] Anisimov S I, Benderskiĭ V A and Farkas G 1977 Soviet Physics Uspekhi20 467 [110] Gumhalter B, Novko D and Petek H 2022 Phys. Rev. B106 035422 [111] Chelvayohan M and Mee C H B 1982 J. Phys. C15 2305 [112] Haas G A and Thomas R E 1977 J. Appl. Phys.48 86 [113] Fujikawa Y, Sakurai T and Tromp R M 2008 Phys. Rev. Lett.100 126803 [114] Fain S and McDavid J 1974 Phys. Rev. B9 5099 [115] Freeouf J L and Woodall J M 1981 Appl. Phys. Lett.39 727 [116] Haneman D 1959 J. Phys. Chem. Solid.11 205 [117] Echenique P, Osma J, Machado M, Silkin V, Chulkov E and Pitarke J 2001 Prog. Surf. Sci.67 271 [118] Echenique P and Pendry J 1989 Prog. Surf. Sci.32 111 [119] Mason W R 2007 Magnetic circular dichroism spectroscopy (John Wiley & Sons) [120] van der Laan G 1995 Phys. Rev. B51 240 [121] Johnson P D 1997 Rep. Prog. Phys.60 1217 [122] Kuch W 2004 Phys. Scr.2004 89 [123] Imada S, Suga S, Kuch W and Kirschner J 2002 Surface Review and Letters9 877 [124] Anders S, Padmore H A, Duarte R M, Renner T, Stammler T, Scholl A, Scheinfein M R, Stöhr J, Séve L and Sinkovic B 1999 Rev. Sci. Instrum.70 3973 [125] Bansmann J, Lu L, Getzlaff M, Fluchtmann M, Braun J and Meiwes-Broer K 1998 J. Magn. Magn. Mater.185 94 [126] Winkelmann A, Bisio F, Ocana R, Lin W C, Nývlt M, Petek H and Kirschner J 2007 Phys. Rev. Lett.98 226601 [127] Keldysh L 1945 Zh. Eksp. Teor. Fiz47 1964 [128] Ivanov M Y, Spanner M and Smirnova O 2005 J. Mod. Opt.52 165 [129] Herink G, Solli D R, Gulde M and Ropers C 2012 Nature483 190 [130] Bormann R, Gulde M, Weismann A, Yalunin S V and Ropers C 2010 Phys. Rev. Lett.105 147601 [131] Bauer E 2014 Surface microscopy with low energy electrons (Springer) [132] Recknagel A 1941 Z. Phys.117 689 [133] Bauer E 1985 Ultramicroscopy17 51 [134] Tromp R, Wan W and Schramm S 2012 Ultramicroscopy119 33 [135] Spiecker H, Schmidt O, Ziethen C, Menke D, Kleineberg U, Ahuja R, Merkel M, Heinzmann U and Schönhense G 1998 Nucl. Instrum. Methods.406 499 [136] Schönhense G, Oelsner A, Schmidt O, Fecher G, Mergel V, Jagutzki O and Schmidt-Böcking H 2001 Surf. Sci.480 180 [137] Oelsner A, Rohmer M, Schneider C, Bayer D, Schönhense G and Aeschlimann M 2010 J. Electron. Spectrosc.178 317 [138] Oelsner A, Schmidt O, Schicketanz M, Klais M, Schönhense G, Mergel V, Jagutzki O and Schmidt-Böcking H 2001 Rev. Sci. Instrum.72 3968 [139] Bauer M, Wiemann C, Lange J, Bayer D, Rohmer M and Aeschlimann M 2007 Appl. Phys. A88 473 [140] Chelaru L I and Meyer zu Heringdorf F J 2007 Surf. Sci.601 4541 [141] Buckanie N M, Göhre J, Zhou P, von der Linde D, Horn-von Hoegen M and Meyer zu Heringdorf F J 2009 J. Condens. Matter Phys.21 314003 [142] Zhang L, Kubo A, Wang L, Petek H and Seideman T 2011 Phys. Rev. B84 245442 [143] Aeschlimann M, Brixner T, Fischer A, Kramer C, Melchior P, Pfeiffer W, Schneider C, Strüber C, Tuchscherer P and Voronine D V 2011 Science333 1723 [144] Kirschbaum P, Buckanie N M and Heringdorf F J M Z 2012 Plasmonics7 229 [145] Lemke C, Schneider C, Leiβner T, Bayer D, Radke J r W, Fischer A, Melchior P, Evlyukhin A B, Chichkov B N and Reinhardt C 2013 Nano Lett.13 1053 [146] Buckanie N M, Kirschbaum P, Sindermann S and Heringdorf F J M z 2013 Ultramicroscopy130 49 [147] Wang L M and Petek H 2013 Laser Photonics Rev.7 1003 [148] Word R C, Fitzgerald J P and Könenkamp R 2013 Opt. Express21 30507 [149] Gong Y, Joly A G, El-Khoury P Z and Hess W P 2014 J. Phys. Chem. C118 25671 [150] Gong Y, Joly A G, El-Khoury P Z and Hess W P 2014 J. Phys. Chem. Lett.5 4243 [151] Groβmann M, Klick A, Lemke C, Falke J, Black M, Fiutowski J, Goszczak A J, Sobolewska E, Zillohu A U, Hedayati M K, Rubahn H G, Faupel F, Elbahri M and Bauer M 2015 ACS Photonics2 1327 [152] Pitarke J, Silkin V, Chulkov E and Echenique P 2006 Rep. Prog. Phys.70 1 [153] Barman S R, Biswas C and Horn K 2004 Phys. Rev. B69 045413 [154] Echenique P M, Berndt R, Chulkov E V, Fauster T, Goldmann A and Höfer U 2004 Surf. Sci. Rep.52 219 [155] Kahl P, Wall S, Witt C, Schneider C, Bayer D, Fischer A, Melchior P, Horn-von Hoegen M, Aeschlimann M and Heringdorf F J M Z 2014 Plasmonics9 1401 [156] Gierster L, Pape L, ünal A A and Kronast F 2015 Rev. Sci. Instrum.86 [157] Schönhense G, Medjanik K, Fedchenko O, Zymaková A, Chernov S, Kutnyakhov D, Vasilyev D, Babenkov S, Elmers H and Baumgärtel P 2021 J. Synchrotron Radiat.28 1891 [158] Liebmann G and Grad E 1951 Proc. Phys. Soc. B64 956 [159] Hawkes P W, 2013 Magnetic electron lenses (Springer Science & Business Media) [160] Niu Y, Vinogradov N, Preobrajenski A, Struzzi C, Sarpi B, Zhu L, Golias E and Zakharov A 2023 J. Synchrotron Radiat.30 468 [161] Dąbrowski M, Dai Y and Petek H 2017 J. Phys. Chem. Lett.8 4446 [162] Tromp R M, Hannon J B, Wan W, Berghaus A and Schaff O 2013 Ultramicroscopy127 25 [163] Escher M, Weber N, Merkel M, Ziethen C, Bernhard P, Schönhense G, Schmidt S, Forster F, Reinert F and Krömker B 2005 J. Condens. Matter Phys.17 S1329 [164] Maklar J, Dong S, Beaulieu S, Pincelli T, Dendzik M, Windsor Y W, Xian R P, Wolf M, Ernstorfer R and Rettig L 2020 Rev. Sci. Instrum.91 123112 [165] Schönhense G, Kutnyakhov D, Pressacco F, Heber M, Wind N, Agustsson S, Babenkov S, Vasilyev D, Fedchenko O and Chernov S 2021 Rev. Sci. Instrum.92 053703 [166] Frank B, Kahl P, Podbiel D, Spektor G, Orenstein M, Fu L, Weiss T, Horn-von Hoegen M, Davis T J and Meyer zu Heringdorf F J 2017 Sci. Adv.3 e1700721 [167] Reutzel M, Li A and Petek H 2020 Phys. Rev. B101 075409 [168] Crampton K T, Joly A G and El-Khoury P Z 2022 Appl. Phys. Lett.120 081102 [169] Li Y, Jiang P, Lyu X, Li X, Qi H, Tang J, Xue Z, Yang H, Lu G and Sun Q 2023 Nat. Commun.14 4837 [170] Faure J, Mauchain J, Papalazarou E, Yan W, Pinon J, Marsi M and Perfetti L 2012 Rev. Sci. Instrum.83 043109 [171] Cerullo G and De Silvestri S 2003 Rev. Sci. Instrum.74 1 [172] Manzoni C and Cerullo G 2016 J. Opt.18 103501 [173] Mårsell E, Larsen E W, Arnold C L, Xu H, Mauritsson J and Mikkelsen A 2015 J. Appl. Phys.117 083104 [174] Mathias S, Miaja-Avila L, Murnane M, Kapteyn H, Aeschlimann M and Bauer M 2007 Rev. Sci. Instrum.78 083105 [175] Frietsch B, Carley R, Döbrich K, Gahl C, Teichmann M, Schwarzkopf O, Wernet P and Weinelt M 2013 Rev. Sci. Instrum.84 075106 [176] Puppin M, Deng Y, Prochnow O, Ahrens J, Binhammer T, Morgner U, Krenz M, Wolf M and Ernstorfer R 2015 Opt. Express23 1491 [177] Rohde G, Hendel A, Stange A, Hanff K, Oloff L P, Yang L X, Rossnagel K and Bauer M 2016 Rev. Sci. Instrum.87 103102 [178] Corder C, Zhao P, Bakalis J, Li X, Kershis M D, Muraca A R, White M G and Allison T K 2018 Struct. Dyn.5 054301 [179] Sie E J, Rohwer T, Lee C and Gedik N 2019 Nat. Commun.10 3535 [180] Buss J H, Wang H, Xu Y, Maklar J, Joucken F, Zeng L, Stoll S, Jozwiak C, Pepper J and Chuang Y D 2019 Rev. Sci. Instrum.90 023105 [181] Mills A, Zhdanovich S, Na M, Boschini F, Razzoli E, Michiardi M, Sheyerman A, Schneider M, Hammond T and Süss V 2019 Rev. Sci. Instrum.90 083001 [182] Keunecke M, Möller C, Schmitt D, Nolte H, Jansen G M, Reutzel M, Gutberlet M, Halasi G, Steil D and Steil S 2020 Rev. Sci. Instrum.91 063905 [183] Chen F, Wang J, Pan M, Liu J, Huang J, Zhao K, Yun C, Qian T, Wei Z and Ding H 2023 Rev. Sci. Instrum.94 043905 [184] Liu Y, Beetar J E, Hosen M M, et al. 2020 Rev. Sci. Instrum.91 013102 [185] Popmintchev T, Chen M C, Popmintchev D, Arpin P, Brown S, Ališauskas S, Andriukaitis G, Balčiunas T, Mücke O D and Pugzlys A 2012 Science336 1287 [186] Midorikawa K 2022 Nat. Photonics16 267 [187] Lewenstein M, Balcou P, Ivanov M Y, L'Huillier A and Corkum P B 1994 Phys. Rev. A49 2117 [188] Cucini R, Pincelli T, Panaccione G, et al. 2020 Struct. Dyn.7 014303 [189] Lee C, Rohwer T, Sie E J, Zong A, Baldini E, Straquadine J, Walmsley P, Gardner D, Lee Y S, Fisher I R and Gedik N 2020 Rev. Sci. Instrum.91 043102 [190] Peli S, Puntel D, Kopic D, Sockol B, Parmigiani F and Cilento F 2020 J. Electron. Spectrosc.243 146978 [191] Sansone G, Benedetti E, Calegari F, Vozzi C, Avaldi L, Flammini R, Poletto L, Villoresi P, Altucci C and Velotta R 2006 Science314 443 [192] Corkum P á and Krausz F 2007 Nat. Phys.3 381 [193] Krausz F and Ivanov M 2009 Rev. Mod. Phys.81 163
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