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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Manna, S., Kamlapure, A., Cornils, L., Hänke, T., Hedegaard, E. M. J., Bremholm, M., Iversen, B. B., Hofmann, P., Wiebe, J. & Wiesendanger, R. (2017). Interfacial superconductivity in a bi-collinear antiferromagnetically ordered FeTe monolayer on a topological insulator. Nature Communications, 8, 1-8. Article 14074. https://doi.org/10.1038/ncomms14074

Ngankeu, A. S., Mahatha, S. K., Guilloy, K., Bianchi, M., Sanders, C., Hanff, K., Rossnagel, K., Miwa, J., Nielsen, C. B., Bremholm, M. & Hofmann, P. (2017). Quasi-one-dimensional metallic band dispersion in the commensurate charge density wave of 1T-TaS2. Physical Review B, 96(19), Article 195147. https://doi.org/10.1103/PhysRevB.96.195147

Hänke, T., Singh, U. R., Cornils, L., Manna, S., Kamlapure, A., Bremholm, M., Hedegaard, E. M. J., Iversen, B. B., Hofmann, P., Hu, J., Mao, Z., Wiebe, J. & Wiesendanger, R. (2017). Reorientation of the diagonal double-stripe spin structure at Fe_1+yTe bulk and thin-film surfaces. Nature Communications, 8, 1-8. Article 13939. https://doi.org/10.1038/ncomms13939

Kamlapure, A., Manna, S., Cornils, L., Haenke, T., Bremholm, M., Hofmann, P., Wiebe, J. & Wiesendanger, R. (2017). Spatial variation of the two-fold anisotropic superconducting gap in a monolayer of FeSe0.5Te0.5 on a topological insulator. Physical Review B, 95(10), Article 104509. https://doi.org/10.1103/PhysRevB.95.104509

Ulstrup, S., Grubisic Cabo, A., Biswas, D., Riley, J. M., Dendzik, M., Sanders, C., Bianchi, M., Cacho, C., Matselyukh, D., Chapman, R. T., Springate, E., King, P. D. C., Miwa, J. & Hofmann, P. (2017). Spin and Valley Control of Free Carriers in Single-Layer WS₂. Physical Review B, 95(4), Article 041405. https://doi.org/10.1103/PhysRevB.95.041405

Hinsche, N. F., Ngankeu, A. S., Guilloy, K., Mahatha, S. K., Cabo, A. G., Bianchi, M., Dendzik, M., Sanders, C. E., Miwa, J. A., Bana, H., Travaglia, E., Lacovig, P., Bignardi, L., Larciprete, R., Baraldi, A., Lizzit, S., Thygesen, K. S. & Hofmann, P. (2017). Spin-dependent electron-phonon coupling in the valence band of single-layer WS2. Physical Review B, 96(12), Article 121402. https://doi.org/10.1103/PhysRevB.96.121402

Luo, B., Caridad, J. M., Whealan, P. R., Dahl Thomsen, J., Mackenzie, D. M. A., Grubisic Cabo, A., Mahatha, S. K., Bianchi, M., Hofmann, P., Uhd Jepsen, P., Boggild, P. & Booth, T. J. (2017). Sputtering an exterior metal coating on copper enclosure for large-scale growth of single-crystalline graphene. 2D materials, 4(4), Article 045017. https://doi.org/10.1088/2053-1583/aa85d5

Mazzola, F., Frederiksen, T., Balasubramanian, T., Hofmann, P., Hellsing, B. & Wells, J. W. (2017). Strong electron-phonon coupling in the sigma band of graphene. Physical Review B, 95(7), Article 075430. https://doi.org/10.1103/PhysRevB.95.075430

Dendzik, M., Fusté, A. B., Michiardi, M., Ngankeu, A. S., Bianchi, M., Miwa, J., Hammer, B., Hofmann, P. & Sanders, C. (2017). Substrate-induced semiconductor-to-metal transition in monolayer WS₂. Physical Review B, 96(23), Article 235440. https://doi.org/10.1103/PhysRevB.96.235440

Datzer, C., Zumbuelte, A., Braun, J., Foerster, T., Schmidt, A. B., Mi, J., Iversen, B. B., Hofmann, P., Minar, J., Ebert, H., Krueger, P., Rohlfing, M. & Donath, M. (2017). Unraveling the spin structure of unoccupied states in Bi2Se3. Physical Review B, 95(11), Article 115401. https://doi.org/10.1103/PhysRevB.95.115401

Tamtögl, A., Pusterhofer, M., Bremholm, M., Hedegaard, E. M. J., Iversen, B. B., Hofmann, P., Ellis, J., Allison, W., Miret-Artés, S. & Ernst, W. E. (2018). A Helium-Surface Interaction Potential of Bi₂Te₃(111) from Ultrahigh-Resolution Spin-Echo Measurements. Surface Science, 678(12), 25 - 31. https://doi.org/10.1016/j.susc.2018.02.006

Warmuth, J., Bremholm, M., Hofmann, P., Wiebe, J. & Wiesendanger, R. (2018). Domain imaging across the magneto-structural phase transitions in Fe_1+y Te. npj Quantum Materials, 3(1), Article 21. https://doi.org/10.1038/s41535-018-0096-1

Arnold, F., Warmuth, J., Michiardi, M., Fikacek, J., Bianchi, M., Hu, J., Mao, Z., Miwa, J., Singh, U. R., Bremholm, M., Wiesendanger, R., Honolka, J., Wehling, T., Wiebe, J. & Hofmann, P. (2018). Electronic structure of Fe_1.08Te bulk crystals and epitaxial FeTe thin films on Bi₂Te₃. Journal of Physics: Condensed Matter, 30(6), Article 065502. https://doi.org/10.1088/1361-648X/aaa43e

Singh, U. R., Warmuth, J., Kamlapure, A., Cornils, L., Bremholm, M., Hofmann, P., Wiebe, J. & Wiesendanger, R. (2018). Enhanced spin-ordering temperature in ultrathin FeTe films grown on a topological insulator. Physical Review B, 97(14), Article 144513. https://doi.org/10.1103/PhysRevB.97.144513

Bana, H., Travaglia, E., Bignardi, L., Lacovig, P., Sanders, C. E., Dendzik, M., Michiardi, M., Bianchi, M., Lizzit, D., Presel, F., De Angelis, D., Apostol, N., Das, P. K., Fujii, J., Vobornik, I., Larciprete, R., Baraldi, A., Hofmann, P. & Lizzit, S. (2018). Epitaxial growth of single-orientation high-quality MoS2 monolayers. 2D materials, 5(3), Article 035012. https://doi.org/10.1088/2053-1583/aabb74

Kyhl, L., Bisson, R., Balog, R., Groves, M. N., Kolsbjerg, E. L., Cassidy, A. M., Jørgensen, J. H., Halkjær, S., Miwa, J. A., Čabo, A. G., Angot, T., Hofmann, P., Arman, M. A., Urpelainen, S., Lacovig, P., Bignardi, L., Bluhm, H., Knudsen, J., Hammer, B. & Hornekaer, L. (2018). Exciting H2 Molecules for Graphene Functionalization. ACS Nano, 12(1), 513-520. https://doi.org/10.1021/acsnano.7b07079

Polley, C. M., Buczko, R., Forsman, A., Dziawa, P., Szczerbakow, A., Rechcinski, R., Kowalski, B. J., Story, T., Trzyna, M., Bianchi, M., Cabo, A. G., Hofmann, P., Tjernberg, O. & Balasubramanian, T. (2018). Fragility of the Dirac Cone Splitting in Topological Crystalline Insulator Heterostructures. A C S Nano, 12(1), 617-626. https://doi.org/10.1021/acsnano.7b07502

Balling, P., Christiansen, J., Christiansen, R. E., Eriksen, E., Lakhotiya, H., Mirsafaei, M., Moller, S. H., Nazir, A., Vester-Petersen, J., Jeppesen, B. R., Jensen, P. B., Hansen, J. L., Ram, S. K., Sigmund, O., Madsen, M., Madsen, S. P. & Julsgaard, B. (2018). Improving the efficiency of solar cells by upconverting sunlight using field enhancement from optimized nano structures. Optical Materials, 83, 279-289. https://doi.org/10.1016/j.optmat.2018.06.038

Tamtoegl, A., Campi, D., Bremholm, M., Hedegaard, E. M. J., Iversen, B. B., Bianchi, M., Hofmann, P., Marzari, N., Benedek, G., Ellis, J. & Allison, W. (2018). Nanoscale surface dynamics of Bi2Te3(111): observation of a prominent surface acoustic wave and the role of van der Waals interactions. Nanoscale, 10(30), 14627-14636. https://doi.org/10.1039/c8nr03102a

Arnold, F., Stan, R.-M., Mahatha, S. K., Lund, H. E., Curcio, D., Dendzik, M., Bana, H., Travaglia, E., Bignardi, L., Lacovig, P., Lizzit, D., Li, Z., Bianchi, M., Miwa, J. A., Bremholm, M., Lizzit, S., Hofmann, P. & Sanders, C. E. (2018). Novel single-layer vanadium sulphide phases. 2D materials, 5(4), Article 045009. https://doi.org/10.1088/2053-1583/aad0c8

Ulstrup, S., Lacovig, P., Orlando, F., Lizzit, D., Bignardi, L., Dalmiglio, M., Bianchi, M., Mazzola, F., Baraldi, A., Larciprete, R., Hofmann, P. & Lizzit, S. (2018). Photoemission investigation of oxygen intercalated epitaxial graphene on Ru(0001). Surface Science, 678, 57-64. https://doi.org/10.1016/j.susc.2018.03.017

Mahatha, S. K., Dendzik, M., Sanders, C. E., Michiardi, M., Bianchi, M., Miwa, J. A. & Hofmann, P. (2018). Quasi-free-standing single-layer WS2 achieved by intercalation. Physical Review Materials, 2(12), Article 124001. https://doi.org/10.1103/PhysRevMaterials.2.124001

Mazzola, F., Wells, J. W., Pakpour-Tabrizi, A. C., Jackman, R. B., Thiagarajan, B., Hofmann, P. & Miwa, J. A. (2018). Simultaneous Conduction and Valence Band Quantization in Ultrashallow High-Density Doping Profiles in Semiconductors. Physical Review Letters, 120(4), Article 046403. https://doi.org/10.1103/PhysRevLett.120.046403

Eickholt, P., Sanders, C., Dendzik, M., Bignardi, L., Lizzit, D., Lizzit, S., Bruix, A., Hofmann, P. & Donath, M. (2018). Spin Structure of K Valleys in Single-Layer WS2 on Au(111). Physical Review Letters, 121(13), Article 136402. https://doi.org/10.1103/PhysRevLett.121.136402

Munkholm Kevy, S., Bremholm, M., Wollesen, L., Lund, H. E. & Hofmann, P. (2018). Structure-Property investigation of superconductivity in Nb-doped Bi2Se3. Poster session presented at DPG Spring Meeting of the Condensed Matter Section (SKM) together with the EPS (2018), Berlin, Germany.

Beyer, H., Rohde, G., Grubišić Čabo, A., Stange, A., Jacobsen, T., Bignardi, L., Lizzit, D., Lacovig, P., Sanders, C. E., Lizzit, S., Rossnagel, K., Hofmann, P. & Bauer, M. (2019). 80% Valley Polarization of Free Carriers in Singly Oriented Single-Layer WS2 on Au(111). Physical Review Letters, 123(23), Article 236802. https://doi.org/10.1103/PhysRevLett.123.236802

Kiraly, B., Knol, E. J., Volckaert, K., Biswas, D., Rudenko, A. N., Prishchenko, D. A., Mazurenko, V. G., Katsnelson, M. I., Hofmann, P., Wegner, D. & Khajetoorians, A. A. (2019). Anisotropic Two-Dimensional Screening at the Surface of Black Phosphorus. Physical Review Letters, 123(21), Article 216403. https://doi.org/10.1103/PhysRevLett.123.216403

Xian, R. P., Acremann, Y., Agustsson, S. Y., Dendzik, M., Bühlmann, K., Curcio, D., Kutnyakhov, D., Pressacco, F., Heber, M., Dong, S., Demsar, J., Wurth, W., Hofmann, P., Wolf, M., Rettig, L. & Ernstorfer, R. (2019). An open-source, distributed workflow for band mapping data in multidimensional photoemission spectroscopy. ArXiv. https://arxiv.org/abs/1909.07714

Shivayogimath, A., Thomsen, J. D., Mackenzie, D. M. A., Geisler, M., Stan, R. M., Holt, A. J., Bianchi, M., Crovetto, A., Whelan, P. R., Carvalho, A., Neto, A. H. C., Hofmann, P., Stenger, N., Bøggild, P. & Booth, T. J. (2019). A universal approach for the synthesis of two-dimensional binary compounds. Nature Communications, 10(1), Article 2957. https://doi.org/10.1038/s41467-019-11075-2

Gronborg, S. S., Thorarinsdottir, K., Kyhl, L., Rodriguez-Fernández, J., Sanders, C. E., Bianchi, M., Hofmann, P., Miwa, J. A., Ulstrup, S. & Lauritsen, J. V. (2019). Basal plane oxygen exchange of epitaxial MoS₂ without edge oxidation. 2D materials, 6(4), Article 045013. https://doi.org/10.1088/2053-1583/ab2d00

Tietze, A., Galam, S. & Hofmann, P. (2019). Crediting multi-authored papers to single authors. ArXiv. https://arxiv.org/abs/1905.01943

Tietze, M., Schaumann, A., Thomale, U., Hofmann, P. & Tietze, A. (2019). Dynamic cerebellar herniation in Chiari patients during the cardiac cycle evaluated by dynamic magnetic resonance imaging. Neuroradiology, 61(7), 825-832. https://doi.org/10.1007/s00234-019-02203-2

Mahatha, S. K., Ngankeu, A. S., Hinsche, N. F., Mertig, I., Guilloy, K., Matzen, P. L., Bianchi, M., Sanders, C. E., Miwa, J. A., Bana, H., Travaglia, E., Lacovig, P., Bignardi, L., Lizzit, D., Larciprete, R., Baraldi, A., Lizzit, S. & Hofmann, P. (2019). Electron-phonon coupling in single-layer MoS2. Surface Science, 681, 64-69. https://doi.org/10.1016/j.susc.2018.11.012

Stan, R. M., Mahatha, S. K., Bianchi, M., Sanders, C. E., Curcio, D., Hofmann, P. & Miwa, J. A. (2019). Epitaxial single-layer NbS2 on Au(111): Synthesis, structure, and electronic properties. Physical Review Materials, 3(4), Article 044003. https://doi.org/10.1103/PhysRevMaterials.3.044003

Bignardi, L., Lizzit, D., Bana, H., Travaglia, E., Lacovig, P., Sanders, C. E., Dendzik, M., Michiardi, M., Bianchi, M., Ewert, M., Buß, L., Falta, J., Flege, J. I., Baraldi, A., Larciprete, R., Hofmann, P. & Lizzit, S. (2019). Growth and structure of singly oriented single-layer tungsten disulfide on Au(111). Physical Review Materials, 3(1), Article 014003. https://doi.org/10.1103/PhysRevMaterials.3.014003

Tkáč, V., Výborný, K., Komanický, V., Warmuth, J., Michiardi, M., Ngankeu, A. S., Vondráček, M., Tarasenko, R., Vališka, M., Stetsovych, V., Carva, K., Garate, I., Bianchi, M., Wiebe, J., Holý, V., Hofmann, P., Springholz, G., Sechovský, V. & Honolka, J. (2019). Influence of an Anomalous Temperature Dependence of the Phase Coherence Length on the Conductivity of Magnetic Topological Insulators. Physical Review Letters, 123(3), Article 036406. https://doi.org/10.1103/PhysRevLett.123.036406

Rostami, H., Volckaert, K., Lanata, N., Mahatha, S. K., Sanders, C. E., Bianchi, M., Lizzit, D., Bignardi, L., Lizzit, S., Miwa, J. A., Balatsky, A., Hofmann, P. & Ulstrup, S. (2019). Layer and orbital interference effects in photoemission from transition metal dichalcogenides. Physical Review B, 100(23), Article 235423. https://doi.org/10.1103/PhysRevB.100.235423

Volckaert, K., Rostami, H., Biswas, D., Markovic, I., Andreatta, F., Sanders, C. E., Majchrzak, P., Cacho, C., Chapman, R. T., Wyatt, A., Springate, E., Lizzit, D., Bignardi, L., Lizzit, S., Mahatha, S. K., Bianchi, M., Lanata, N., King, P. D. C., Miwa, J. A. ... Ulstrup, S. (2019). Momentum-resolved linear dichroism in bilayer MoS₂. Physical Review B, 100(24), Article 241406. https://doi.org/10.1103/PhysRevB.100.241406

Ulstrup, S., Giusca, C. E., Miwa, J. A., Sanders, C. E., Browning, A., Dudin, P., Cacho, C., Kazakova, O., Gaskill, D. K., Myers-Ward, R. L., Zhang, T., Terrones, M. & Hofmann, P. (2019). Nanoscale mapping of quasiparticle band alignment. Nature Communications, 10(1), Article 3283. https://doi.org/10.1038/s41467-019-11253-2

Shao, B., Eich, A., Sanders, C., Ngankeu, A. S., Bianchi, M., Hofmann, P., Khajetoorians, A. A. & Wehling, T. O. (2019). Pseudodoping of a metallic two-dimensional material by the supporting substrate. Nature Communications, 10(1), Article 180. https://doi.org/10.1038/s41467-018-08088-8

Hofmann, P., Ugeda, M. M., Tamtögl, A., Ruckhofer, A., Ernst, W. E., Benedek, G., Martínez-Galera, A. J., Stróżecka, A., Gómez-Rodríguez, J. M., Rienks, E., Jensen, M. F., Pascual, J. I. & Wells, J. W. (2019). Strong-coupling charge density wave in a one-dimensional topological metal. Physical Review B, 99(3), Article 035438. https://doi.org/10.1103/PhysRevB.99.035438

Nair, B., Næsby, A., Jeppesen, B. R. & Dantan, A. R. (2019). Suspended silicon nitride thin films with enhanced and electrically tunable reflectivity. Physica Scripta, 94(12), Article 125013. https://doi.org/10.1088/1402-4896/ab3d6f

Tietze, A. & Hofmann, P. (2019). The h-index and multi-author h _m -index for individual researchers in condensed matter physics. Scientometrics, 119(1), 171-185. https://doi.org/10.1007/s11192-019-03051-w

Schenk, A. K., Pakpour-Tabrizi, A. C., Holt, A. J. U., Mahatha, S. K., Arnold, F., Bianchi, M., Jackman, R. B., Miwa, J. A., Hofmann, P., Cooil, S. P., Wells, J. W. & Mazzola, F. (2019). The occupied electronic structure of ultrathin boron doped diamond. ArXiv. https://arxiv.org/abs/1907.00673

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. (2019). The Sub-band Structure of Atomically Sharp Dopant Profiles in Silicon. ArXiv. https://arxiv.org/abs/1904.10929

Ruckhofer, A., Campi, D., Bremholm, M., Hofmann, P., Bendek, G., Bernasconi, M., Ernst, W. E. & Tamtögl, A. (2019). THz Surface Modes and Electron-Phonon Coupling in Bi₂Se₃(111). ArXiv. arXiv https://arxiv.org/abs/1907.01864

Andreatta, F., Rostami, H., Čabo, A. G., Bianchi, M., Sanders, C. E., Biswas, D., Cacho, C., Jones, A. J. H., Chapman, R. T., Springate, E., King, P. D. C., Miwa, J. A., Balatsky, A., Ulstrup, S. & Hofmann, P. (2019). Transient hot electron dynamics in single-layer TaS₂. Physical Review B, 99(16), Article 165421. https://doi.org/10.1103/PhysRevB.99.165421

Curcio, D., Jones, A., Muzzio, R., Volckaert, K. C. R., Biswas, D., Sanders, C. E., Dudin, P., Cacho, C., Singh, S., Watanabe, K., Taniguchi, T., Miwa, J., Katoch, J., Ulstrup, S. & Hofmann, P. (2020). Accessing the Spectral Function in a Current-Carrying Device. Physical Review Letters, 125(23), Article 236403. https://doi.org/10.1103/PhysRevLett.125.236403

Xian, R. P., Acremann, Y., Agustsson, S. Y., Dendzik, M., Bühlmann, K., Curcio, D., Kutnyakhov, D., Pressacco, F., Heber, M., Dong, S., Pincelli, T., Demsar, J., Wurth, W., Hofmann, P., Wolf, M., Scheidgen, M., Rettig, L. & Ernstorfer, R. (2020). An open-source, end-to-end workflow for multidimensional photoemission spectroscopy. Scientific Data, 7(1), Article 442. https://doi.org/10.1038/s41597-020-00769-8

Tietze, A., Galam, S. & Hofmann, P. (2020). Crediting multi-authored papers to single authors. Physica A: Statistical Mechanics and its Applications, 554, Article 124652. https://doi.org/10.1016/j.physa.2020.124652

Displaying results 151 to 200 out of 250

Revised 23.05.2023

Lise Refstrup Linnebjerg Pedersen