Hofmann, Phillip

Philip Hofmann

Professor

M philip@phys.au.dk
H 1520, 323
P +4587155612
P +4587155612

Keywords

Electronic structure
Angle-resolved photoemission spectroscopy
Synchrotron radiation
Ultrafast electron dynamics

Head of Phillips Hofmann's research group

Professor Philip Hofmann

Website

Electronic properties and electron dynamics in quantum materials

Our group is using powerful analytical tools (synchrotron radiation-based photoelectron spectroscopy, time-resolved photoelectron spectroscopy, nano-scale transport measurements and scanning tunnelling microscopy) to study the electronic properties and electron dynamics in quantum materials. We are mostly working with the surfaces of semimetals, topological insulators and with novel two-dimensional materials such as graphene or single-layer transition metal dichalcogenides.

Recent publications

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Sant, R., Lisi, S., Nguyen, V. D., Mazaleyrat, E., Gómez Herrero, A. C., Geaymond, O., Guisset, V., David, P., Marty, A., Jamet, M., Chapelier, C., Magaud, L., Dappe, Y. J., Bianchi, M., Hofmann, P., Renaud, G. & Coraux, J. (2020). Decoupling Molybdenum Disulfide from Its Substrate by Cesium Intercalation. Journal of Physical Chemistry C, 124(23), 12397-12408. https://doi.org/10.1021/acs.jpcc.0c00970

Balatsky, A. V., Haraldsen, J. T., Black-Schaffer, A. M., Pertsova, A. & Hofmann, P. (2020). Dynamic quantum matter. Annalen der Physik, 532(2), Article 2000037. https://doi.org/10.1002/andp.202000037

Muzzio, R., Jones, A. J. H., Curcio, D., Biswas, D., Miwa, J. A., Hofmann, P., Watanabe, K., Taniguchi, T., Singh, S., Jozwiak, C., Rotenberg, E., Bostwick, A., Koch, R. J., Ulstrup, S. & Katoch, J. (2020). Momentum-resolved view of highly tunable many-body effects in a graphene/hBN field-effect device. Physical Review B, 101(20), Article 201409. https://doi.org/10.1103/PhysRevB.101.201409

Tamtögl, A., Sacchi, M., Avidor, N., Calvo-Almazán, I., Townsend, P. S. M., Bremholm, M., Hofmann, P., Ellis, J. & Allison, W. (2020). Nanoscopic diffusion of water on a topological insulator. Nature Communications, 11(1), Article 278. https://doi.org/10.1038/s41467-019-14064-7

Holt, A. J., Mahatha, S. K., Stan, R. M., Strand, F. S., Nyborg, T., Curcio, D., Schenk, A. K., Cooil, S. P., Bianchi, M., Wells, J. W., Hofmann, P. & Miwa, J. A. (2020). Observation and origin of the Δ manifold in Si:P δ layers. Physical Review B, 101(12), Article 121402. https://doi.org/10.1103/PhysRevB.101.121402

Dendzik, M., Xian, R. P., Perfetto, E., Sangalli, D., Kutnyakhov, D., Dong, S., Beaulieu, S., Pincelli, T., Pressacco, F., Curcio, D., Agustsson, S. Y., Heber, M., Hauer, J., Wurth, W., Brenner, G., Acremann, Y., Hofmann, P., Wolf, M., Marini, A. ... Ernstorfer, R. (2020). Observation of an Excitonic Mott Transition through Ultrafast Core-cum-Conduction Photoemission Spectroscopy. Physical Review Letters, 125(9), Article 096401. https://doi.org/10.1103/PhysRevLett.125.096401

Jones, A. J. H., Muzzio, R., Majchrzak, P., Pakdel, S., Curcio, D., Volckaert, K., Biswas, D., Gobbo, J., Singh, S., Robinson, J. T., Watanabe, K., Taniguchi, T., Kim, T. K., Cacho, C., Lanata, N., Miwa, J. A., Hofmann, P., Katoch, J. & Ulstrup, S. (2020). Observation of Electrically Tunable van Hove Singularities in Twisted Bilayer Graphene from NanoARPES. Advanced Materials, 32(31), Article 2001656. https://doi.org/10.1002/adma.202001656

Pakpour-Tabrizi, A. C., Schenk, A. K., Holt, A. J. U., Mahatha, S. K., Arnold, F., Bianchi, M., Jackman, R. B., Butler, J. E., Vikharev, A., Miwa, J. A., Hofmann, P., Cooil, S. P., Wells, J. W. & Mazzola, F. (2020). The occupied electronic structure of ultrathin boron doped diamond. Nanoscale Advances, 2(3), 1358-1364. https://doi.org/10.1039/c9na00593e

Mazzola, F., Chen, C. Y., Rahman, R., Zhu, X. G., Polley, C. M., Balasubramanian, T., King, P. D. C., Hofmann, P., Miwa, J. A. & Wells, J. W. (2020). The sub-band structure of atomically sharp dopant profiles in silicon. npj Quantum Materials, 5(1), Article 34. https://doi.org/10.1038/s41535-020-0237-1

Kutnyakhov, D., Xian, R. P., Dendzik, M., Heber, M., Pressacco, F., Agustsson, S. Y., Wenthaus, L., Meyer, H., Gieschen, S., Mercurio, G., Benz, A., Bühlman, K., Däster, S., Gort, R., Curcio, D., Volckaert, K., Bianchi, M., Sanders, C., Miwa, J. A. ... Wurth, W. (2020). Time- And momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser. Review of Scientific Instruments, 91(1), Article 013109. https://doi.org/10.1063/1.5118777

Bignardi, L., Mahatha, S. K., Lizzit, D., Bana, H., Travaglia, E., Lacovig, P., Sanders, C., Baraldi, A., Hofmann, P. & Lizzit, S. (2021). Anisotropic strain in epitaxial single-layer molybdenum disulfide on Ag(110). Nanoscale, 13(44), 18789-18798. https://doi.org/10.1039/d1nr05584d

Kühne, F., Neumann, W. J., Hofmann, P., Marques, J., Kaindl, A. M. & Tietze, A. (2021). Assessment of myelination in infants and young children by T1 relaxation time measurements using the magnetization-prepared 2 rapid acquisition gradient echoes sequence. Pediatric Radiology, 51(11), 2058-2068. https://doi.org/10.1007/s00247-021-05109-5

Lund, H. E., Volckaert, K., Majchrzak, P., Jones, A. J. H., Bianchi, M., Bremholm, M. & Hofmann, P. (2021). Bulk band structure of Sb₂Te₃ determined by angle-resolved photoemission spectroscopy. Physical Chemistry Chemical Physics, 23(46), 26401-26406. https://doi.org/10.1039/d1cp04031f

Fikáček, J., Warmuth, J., Arnold, F., Piamonteze, C., Mao, Z., Holý, V., Hofmann, P., Bremholm, M., Wiebe, J., Wiesendanger, R. & Honolka, J. (2021). Disorder-induced time effect in the antiferromagnetic domain state of Fe₁₊_yTe. Journal of Magnetism and Magnetic Materials, 540, Article 168426. https://doi.org/10.1016/j.jmmm.2021.168426

Hofmann, P. & King, P. D. C. (2021). Editorial: ARPES studies of topological materials. Electronic Structure, 3(2), Article 020201. https://doi.org/10.1088/2516-1075/abf1cb

Holt, A. J. U., Pakdel, S., Rodriguez-Fernandez, J., Zhang, Y. X., Curcio, D., Sun, Z., Lacovig, P., Yao, Y.-X., Lauritsen, J., Lizzit, S., Lanata, N., Hofmann, P., Bianchi, M. & Sanders, C. E. (2021). Electronic properties of single-layer CoO2/Au(111). 2D materials, 8(3), Article 035050. https://doi.org/10.1088/2053-1583/ac040f

Ruckhofer, A., Halbritter, S., Lund, H. E., Holt, A. J. U., Bianchi, M., Bremholm, M., Benedek, G., Hofmann, P., Ernst, W. E. & Tamtögl, A. (2021). Inelastic helium atom scattering from Sb₂Te₃(111): phonon dispersion, focusing effects and surfing. Physical Chemistry Chemical Physics, 23(13), 7806-7813. https://doi.org/10.1039/d0cp04738d

Kamber, U., Pakdel, S., Stan, R.-M., Kamlapure, A., Kiraly, B., Arnold, F., Eich, A., Ngankeu, A. S., Bianchi, M., Miwa, J., Sanders, C., Lanata, N., Hofmann, P. & Khajetoorians, A. A. (2021). Moiré-induced electronic structure modifications in monolayer V₂ S₃ on Au(111). Physical Review B, 103(11), Article 115414. https://doi.org/10.1103/PhysRevB.103.115414

Parthenopoulos, A., Darki, A. A., Jeppesen, B. R. & Dantan, A. R. (2021). Optical spatial differentiation with suspended subwavelength gratings. Optics Express, 29(5), 6481-6494. https://doi.org/10.1364/OE.416801

Dreher, P., Wan, W., Chikina, A., Bianchi, M., Guo, H., Harsh, R., Mañas-Valero, S., Coronado, E., Martínez-Galera, A. J., Hofmann, P., Miwa, J. A. & Ugeda, M. M. (2021). Proximity Effects on the Charge Density Wave Order and Superconductivity in Single-Layer NbSe₂. ACS Nano, 15(12), 19430-19438. https://doi.org/10.1021/acsnano.1c06012

Majchrzak, P., Volckaert, K., Čabo, A. G., Biswas, D., Bianchi, M., Mahatha, S. K., Dendzik, M., Andreatta, F., Grønborg, S. S., Marković, I., Riley, J. M., Johannsen, J. C., Lizzit, D., Bignardi, L., Lizzit, S., Cacho, C., Alexander, O., Matselyukh, D., Wyatt, A. S. ... Ulstrup, S. (2021). Spectroscopic view of ultrafast charge carrier dynamics in single- and bilayer transition metal dichalcogenide semiconductors. Journal of Electron Spectroscopy and Related Phenomena, 250, Article 147093. https://doi.org/10.1016/j.elspec.2021.147093

Kevy, S. M., Lund, H. E., Wollesen, L., Dalgaard, K. J., Hsu, Y. T., Wiedmann, S., Bianchi, M., Holt, A. J. U., Curcio, D., Biswas, D., Jones, A. J. H., Volckaert, K., Cacho, C., Dudin, P., Hofmann, P. & Bremholm, M. (2021). Structural and electronic inhomogeneity of superconducting Nb-doped Bi₂Se₃. Physical Review B, 103(8), Article 085107. https://doi.org/10.1103/PhysRevB.103.085107

Darki, A. A., Parthenopoulos, A., Jeppesen, B. R., Nygaard, J. V. & Dantan, A. (2021). Suspended subwavelength gratings for optical processing and optomechanics. In C. J. Chang-Hasnain, J. A. Fan & W. Zhou (Eds.), High Contrast Metastructures X Article 116951N SPIE - International Society for Optical Engineering. https://doi.org/10.1117/12.2585455

Majchrzak, P., Pakdel, S., Biswas, D., Jones, A. J. H., Volckaert, K., Marković, I., Andreatta, F., Sankar, R., Jozwiak, C., Rotenberg, E., Bostwick, A., Sanders, C. E., Zhang, Y., Karras, G., Chapman, R. T., Wyatt, A., Springate, E., Miwa, J. A., Hofmann, P. ... Ulstrup, S. (2021). Switching of the electron-phonon interaction in 1T-VSe₂ assisted by hot carriers. Physical Review B, 103(24), Article L241108. https://doi.org/10.1103/PhysRevB.103.L241108

Galbiati, M., Persichetti, L., Gori, P., Pulci, O., Bianchi, M., Di Gaspare, L., Tersoff, J., Coletti, C., Hofmann, P., De Seta, M. & Camilli, L. (2021). Tuning the Doping of Epitaxial Graphene on a Conventional Semiconductor via Substrate Surface Reconstruction. Journal of Physical Chemistry Letters, 12(4), 1262-1267. https://doi.org/10.1021/acs.jpclett.0c03649

Curcio, D., Pakdel, S., Volckaert, K., Miwa, J. A., Ulstrup, S., Lanatà, N., Bianchi, M., Kutnyakhov, D., Pressacco, F., Brenner, G., Dziarzhytski, S., Redlin, H., Agustsson, S. Y., Medjanik, K., Vasilyev, D., Elmers, H. J., Schönhense, G., Tusche, C., Chen, Y. J. ... Hofmann, P. (2021). Ultrafast electronic linewidth broadening in the C 1s core level of graphene. Physical Review B, 104(16), Article L161104. https://doi.org/10.1103/PhysRevB.104.L161104

Biswas, D., Jones, A., Majchrzak, P. E., Choi, B. K., Lee, T. H., Volckaert, K., feng, J., Markovic, I., Andreatta, F., Kang, C.-J., kim, H. J., Lee, I. H., Joswiak, C., Rotenberg, E., Bostwick, A., Sanders, C., Zhang, Y., Karras, G., Chapman, R. T. ... Ulstrup, S. (2021). Ultrafast triggering of insulator-metal transition in two-dimensional VSe₂. Nano Letters, 21(5), 1968-1975. https://doi.org/10.1021/acs.nanolett.0c04409

Huang, X., Xiong, R., Volckaert, K., Hao, C., Biswas, D., Bianchi, M., Hofmann, P., Beck, P., Warmuth, J., Sa, B., Wiebe, J. & Wiesendanger, R. (2022). Experimental Realization of Semiconducting Monolayer Si₂Te₂ Films. Advanced Functional Materials, 32(48), Article 2208281. https://doi.org/10.1002/adfm.202208281

Borisenko, S., Fedorov, A., Kuibarov, A., Bianchi, M., Bezguba, V., Majchrzak, P., Hofmann, P., Baumgärtel, P., Voroshnin, V., Kushnirenko, Y., Sánchez-Barriga, J., Varykhalov, A., Ovsyannikov, R., Morozov, I., Aswartham, S., Feia, O., Harnagea, L., Wurmehl, S., Kordyuk, A. ... Büchner, B. (2022). Fermi surface tomography. Nature Communications, 13(1), Article 4132. https://doi.org/10.1038/s41467-022-31841-z

Chikina, A., Bhattacharyya, G., Curcio, D., Sanders, C. E., Bianchi, M., Lanatà, N., Watson, M., Cacho, C., Bremholm, M. & Hofmann, P. (2022). One-dimensional electronic states in a natural misfit structure. Physical Review Materials, 6(9), 1-5. Article L092001. https://doi.org/10.1103/PhysRevMaterials.6.L092001

Michiardi, M., Boschini, F., Kung, H.-H., Na, M. X., Dufresne, S. K. Y., Currie, A., Levy, G., Zhdanovich, S., Mills, A. K., Jones, D. J., Mi, J. L., Iversen, B. B., Hofmann, P. & Damascelli, A. (2022). Optical manipulation of Rashba-split 2-dimensional electron gas. Nature Communications, 13(1), Article 3096. https://doi.org/10.1038/s41467-022-30742-5

Kraus, S., Huttmann, F., Fischer, J., Knispel, T., Bischof, K., Herman, A., Bianchi, M., Stan, R. M., Holt, A. J., Caciuc, V., Tsukamoto, S., Wende, H., Hofmann, P., Atodiresei, N. & Michely, T. (2022). Single-crystal graphene on Ir(110). Physical Review B, 105(16), Article 165405. https://doi.org/10.1103/PhysRevB.105.165405

Curcio, D., Volckaert, K., Kutnyakhov, D., Agustsson, S. Y., Bühlmann, K., Pressacco, F., Heber, M., Dziarzhytski, S., Acremann, Y., Demsar, J., Wurth, W., Sanders, C. E. & Hofmann, P. (2022). Tracking the surface atomic motion in a coherent phonon oscillation. Physical Review B, 106(20), Article L201409. https://doi.org/10.1103/PhysRevB.106.L201409

Kraus, S., Herman, A., Huttmann, F., Bianchi, M., Stan, R. M., Holt, A. J., Tsukamoto, S., Rothenbach, N., Ollefs, K., Dreiser, J., Bischof, K., Wende, H., Hofmann, P., Atodiresei, N. & Michely, T. (2022). Uniaxially Aligned 1D Sandwich-Molecular Wires: Electronic Structure and Magnetism. Journal of Physical Chemistry C, 126(6), 3140-3150. https://doi.org/10.1021/acs.jpcc.1c10625

Jones, A. J. H., Muzzio, R., Pakdel, S., Biswas, D., Curcio, D., Lanata, N., Hofmann, P., McCreary, K. M., Jonker, B. T., Watanabe, K., Taniguchi, T., Singh, S., Koch, R. J., Jozwiak, C., Rotenberg, E., Bostwick, A., Miwa, J. A., Katoch, J. & Ulstrup, S. (2022). Visualizing band structure hybridization and superlattice effects in twisted MoS₂/WS₂heterobilayers. 2D materials, 9(1), Article 015032. https://doi.org/10.1088/2053-1583/ac3feb

Chikina, A., Lund, H., Bianchi, M., Curcio, D., Dalgaard, K. J., Bremholm, M., Lei, S., Singha, R., Schoop, L. M. & Hofmann, P. (2023). Charge density wave generated Fermi surfaces in NdTe3. Physical Review B, 107(16), Article L161103. https://doi.org/10.1103/PhysRevB.107.L161103

Sarkar, S., Bhattacharya, J., Sadhukhan, P., Curcio, D., Dutt, R., Singh, V. K., Bianchi, M., Pariari, A., Roy, S., Mandal, P., Das, T., Hofmann, P., Chakrabarti, A. & Roy Barman, S. (2023). Charge density wave induced nodal lines in LaTe₃. Nature Communications, 14(1), Article 3628. https://doi.org/10.1038/s41467-023-39271-1

Bianchi, M., Hsieh, K., Porat, E. J., Dirnberger, F., Klein, J., Mosina, K., Sofer, Z., Rudenko, A. N., Katsnelson, M. I., Chen, Y. P., Rösner, M. & Hofmann, P. (2023). Charge transfer induced Lifshitz transition and magnetic symmetry breaking in ultrathin CrSBr crystals. Physical Review B, 108(19), Article 195410. https://doi.org/10.1103/PhysRevB.108.195410

Curcio, D., Sanders, C. E., Chikina, A., Lund, H. E., Bianchi, M., Granata, V., Cannavacciuolo, M., Cuono, G., Autieri, C., Forte, F., Avallone, G., Romano, A., Cuoco, M., Dudin, P., Avila, J., Polley, C., Balasubramanian, T., Fittipaldi, R., Vecchione, A. & Hofmann, P. (2023). Current-driven insulator-to-metal transition without Mott breakdown in Ca2RuO4. Physical Review B, 108(16), Article L161105. https://doi.org/10.1103/PhysRevB.108.L161105

Mortensen, K. O., Zardbani, F., Haque, M. A., Agustsson, S. Y., Mottin, D., Hofmann, P. & Karras, P. (2023). Marigold: Efficient k-means Clustering in High Dimensions. Proceedings of the VLDB Endowment, 16(7), 1740-1748. https://doi.org/10.14778/3587136.3587147

Bianchi, M., Acharya, S., Dirnberger, F., Klein, J., Pashov, D., Mosina, K., Sofer, Z., Rudenko, A. N., Katsnelson, M. I., Van Schilfgaarde, M., Rösner, M. & Hofmann, P. (2023). Paramagnetic electronic structure of CrSBr: Comparison between ab initio GW theory and angle-resolved photoemission spectroscopy. Physical Review B, 107(23), Article 235107. https://doi.org/10.1103/PhysRevB.107.235107

Bianchi, M., Hofmann, P., Hoffmann, S. V., Jones, N. C., Li, Z., Miwa, J., Møller, S. P., Nielsen, J. S., Thomsen, H. D., Ulstrup, S. & Worm, T. (2023). Status and strategy at ISA, centre for storage ring facilities, Aarhus University, Denmark. European Physical Journal Plus, 138(2), Article 132. https://doi.org/10.1140/epjp/s13360-023-03748-1

Volckaert, K., Majchrzak, P. E., Biswas, D., Jones, A., Bianchi, M., Jiang, Z., Dubourg, R., Stenshøj, R. Ø., Jensen, M. L., Jones, N. C., Hoffmann, S. V., Mi, J., Bremholm, M., Pan, X. C., Chen, Y. P., Hofmann, P., Miwa, J. & Ulstrup, S. (2023). Surface electronic structure engineering of manganese bismuth tellurides guided by micro-focused angle-resolved photoemission. Advanced Materials, 35(36), Article 2301907. https://doi.org/10.1002/adma.202301907

Benter, S., Bianchi, M., Pan, D., Zhao, J., Xu, H. Q., Timm, R., Hofmann, P. & Mikkelsen, A. (2024). 2D electron gas formation on InAs wurtzite nanosheet surfaces. Applied Physics Letters, 124(15), Article 153104. https://doi.org/10.1063/5.0200217

Majchrzak, P., Zhang, Y., Kuibarov, A., Chapman, R., Wyatt, A., Springate, E., Borisenko, S., Büchner, B., Hofmann, P. & Sanders, C. E. (2024). Access to the full three-dimensional Brillouin zone with time resolution, using a new tool for pump-probe angle-resolved photoemission spectroscopy. Review of Scientific Instruments, 95(6), Article 063001. https://doi.org/10.1063/5.0179752

Liu, L., Ji, Y., Bianchi, M., Hus, S. M., Li, Z., Balog, R., Miwa, J. A., Hofmann, P., Li, A. P., Zemlyanov, D. Y., Li, Y. & Chen, Y. P. (2024). A metastable pentagonal 2D material synthesized by symmetry-driven epitaxy. Nature Materials, 23(10), 1339-1346. https://doi.org/10.1038/s41563-024-01987-w

Ágústsson, S. Ý., Jones, A. J. H., Curcio, D., Ulstrup, S., Miwa, J., Mottin, D., Karras, P. & Hofmann, P. (2024). Autonomous micro-focus angle-resolved photoemission spectroscopy. Review of Scientific Instruments, 95(5), Article 055106. https://doi.org/10.1063/5.0204663

Zonno, M., Michiardi, M., Boschini, F., Levy, G., Volckaert, K., Curcio, D., Bianchi, M., Rosa, P. F. S., Fisk, Z., Hofmann, P., Elfimov, I. S., Green, R. J., Sawatzky, G. A. & Damascelli, A. (2024). Mixed-valence state in the dilute-impurity regime of La-substituted SmB₆. Nature Communications, 15, Article 7621. https://doi.org/10.1038/s41467-024-51569-2

Tkáč, V., Vorobiov, S., Baloh, P., Vondráček, M., Springholz, G., Carva, K., Szabó, P., Hofmann, P. & Honolka, J. (2024). Multiphase superconductivity at the interface between ultrathin FeTe islands and Bi₂Te₃. npj 2D Materials and Applications, 8(1), Article 52. https://doi.org/10.1038/s41699-024-00480-x

Berti, A., D'Alessio, M., Bianchi, M., Bignardi, L., Lacovig, P., Sanders, C., Lizzit, S., Hofmann, P., Marrazzo, A. & Baraldi, A. (2024). Unraveling oxygen-driven surface segregation dynamics in platinum-gold alloys. Applied Surface Science, 670, Article 160577. https://doi.org/10.1016/j.apsusc.2024.160577

Displaying results 201 to 250 out of 250

Revised 23.05.2023

Lise Refstrup Linnebjerg Pedersen