Working Group Inelastic Photon Scattering

Selected Publications


An electronic nematic liquid in BaNi2As2

Y. Yao, R. Willa, T. Lacmann, S.-M. Souliou, M. Frachet, K. Willa, M. Merz, F. Weber, Ch. Meingast, R. Heid, A.-A. Haghighirad, J. Schmalian, M. Le Tacon

Nat. Commun. 13 (2022) 4535



Soft-Phonon and Charge-Density-Wave Formation in Nematic BaNi2As2

S.  M. Souliou, T. Lacmann, R. Heid, C. Meingast, M. Frachet, L. Paolasini, A.-A. Haghighirad, M. Merz, A. Bosak, M. Le Tacon

Phys. Rev. Lett. 129 (2022) 247602



Charge Density Waves in YBa2Cu3O6.67 Probed by Resonant X-Ray Scattering under Uniaxial Compression

H.-H. Kim, E. Lefrançois, K. Kummer, R. Fumagalli, N.  B. Brookes, D. Betto, S. Nakata, M. Tortora, J. Porras, T. Loew, M.  E. Barber, L. Braicovich, A.  P. Mackenzie, C.  W. Hicks, B. Keimer, M. Minola, M. Le Tacon

Phys. Rev. Lett. 126 (2021) 37002



Strange semimetal dynamics in SrIrO3

K. Sen, D. Fuchs, R. Heid, K. Kleindienst, K. Wolff, J. Schmalian, M. Le Tacon

Nat. Commun. 11 (2020) 4270



Uniaxial pressure control of competing orders in a high-temperature superconductor

H.-H. Kim, S. M. Souliou, M. E. Barber, E. Lefrancois, M. Minola, M. Tortora, R. Heid, N. Nandi, R. A. Borzi, G. Garbarino, A. Bosak, J. Porras, T. Loew, M. König, P. M. Moll, A. P. Mackenzie, B. Keimer, C. W. Hicks, M. Le Tacon

Science 362 (2018) 1040


Recent Publications

Anomalous phonon Grüneisen parameters in the semiconductor Ta 2 NiS 5
Ye, M.; Lacmann, T.; Frachet, M.; Vinograd, I.; Garbarino, G.; Maraytta, N.; Merz, M.; Heid, R.; Haghighirad, A.-A.; Le Tacon, M.
2024. Physical Review B, 110 (3), 035120. doi:10.1103/PhysRevB.110.035120
Flexible strained membranes of multiferroic TbMnO₃
Shi, H.; Ringe, F.; Wang, D.; Moran, O.; Nayak, K.; Jaiswal, A. K.; Tacon, M. L.; Fuchs, D.
2024. Applied Physics Letters, 125 (1). doi:10.1063/5.0212531
Bosonic excitation spectra of superconducting BiSrCaCuO and YBaCuO extracted from scanning tunneling spectra
Gozlinski, T.; Henn, M.; Wolf, T.; Le Tacon, M.; Schmalian, J.; Wulfhekel, W.
2024. Journal of Physics: Condensed Matter, 36 (17), Art.-Nr.: 175601. doi:10.1088/1361-648X/ad1ca8
High-pressure phase diagram of BaNi₂ As₂: Unconventional charge density waves and structural phase transitions
Lacmann, T.; Haghighirad, A.-A.; Souliou, S.-M.; Merz, M.; Garbarino, G.; Glazyrin, K.; Heid, R.; Le Tacon, M.
2023. Physical Review B, 108 (22), Art.-Nr.: 224115. doi:10.1103/PhysRevB.108.224115
Giant Nonvolatile Electric Field Control of Proximity‐Induced Magnetism in the Spin–Orbit Semimetal SrIrO
Jaiswal, A. K.; Eder, R.; Wang, D.; Wollersen, V.; Tacon, M. L.; Fuchs, D.
2023. Advanced Functional Materials, Art.Nr.: 2308346. doi:10.1002/adfm.202308346
Lattice Dynamics Signatures of Competing Orders in Unconventional Superconductors
Souliou, S. M.; Weber, F.; Le Tacon, M.
2023. Synchrotron Radiation News, 36 (3), 16–23. doi:10.1080/08940886.2023.2226045
From valence fluctuations to long-range magnetic order in EuPd₂ ( Si₁₋ₓ Geₓ)₂ single crystals
Peters, M.; Kliemt, K.; Ocker, M.; Wolf, B.; Puphal, P.; Le Tacon, M.; Merz, M.; Lang, M.; Krellner, C.
2023. Physical Review Materials, 7 (6), 064405. doi:10.1103/PhysRevMaterials.7.064405
Strong electron-phonon coupling and enhanced phonon Grüneisen parameters in valence-fluctuating metal EuPdSi
Ye, M.; Westarp, M. J. G., von; Souliou, S.-M.; Peters, M.; Möller, R.; Kliemt, K.; Merz, M.; Heid, R.; Krellner, C.; Le Tacon, M.
2023. Physical Review B, 107 (19), Art.-Nr.: 195111. doi:10.1103/PhysRevB.107.195111
Disentangling Lattice and Electronic Instabilities in the Excitonic Insulator Candidate Ta 2 NiSe 5 by Nonequilibrium Spectroscopy
Katsumi, K.; Alekhin, A.; Souliou, S.-M.; Merz, M.; Haghighirad, A.-A.; Le Tacon, M.; Houver, S.; Cazayous, M.; Sacuto, A.; Gallais, Y.
2023. Physical Review Letters, 130 (10), 106904. doi:10.1103/PhysRevLett.130.106904
Normal-state charge transport in YBa2Cu3O6.67 under uniaxial stress
Nakata, S.; Yang, P.; Barber, M. E.; Ishida, K.; Kim, H.-H.; Loew, T.; Tacon, M. L.; Mackenzie, A. P.; Minola, M.; Hicks, C. W.; Keimer, B.
2022. npj Quantum Materials, 7 (1), 118. doi:10.1038/s41535-022-00532-9
Elastoresistivity in the incommensurate charge density wave phase of BaNi₂(As₁₋ₓPₓ)₂
Frachet, M.; Wiecki, P.; Lacmann, T.; Souliou, S. M.; Willa, K.; Meingast, C.; Merz, M.; Haghighirad, A.-A.; Le Tacon, M.; Böhmer, A. E.
2022. npj Quantum Materials, 7, Article no: 115. doi:10.1038/s41535-022-00525-8
Soft-Phonon and Charge-Density-Wave Formation in Nematic BaNi₂As₂
Souliou, S. M.; Lacmann, T.; Heid, R.; Meingast, C.; Frachet, M.; Paolasini, L.; Haghighirad, A.-A.; Merz, M.; Bosak, A.; Le Tacon, M.
2022. Physical Review Letters, 129 (24), Article no: 247602. doi:10.1103/PhysRevLett.129.247602
Dependence of T of YBa Cu O on in-plane uniaxial stress
Barber, M. E.; Kim, H.- ho; Loew, T.; Le Tacon, M.; Minola, M.; Konczykowski, M.; Keimer, B.; Mackenzie, A. P.; Hicks, C. W.
2022. Physical Review B, 106 (18), Art.Nr. 184516. doi:10.1103/PhysRevB.106.184516
Charge density wave transitions, soft phonon, and possible electronic nematicity in BaNi₂(As₁₋ₓPₓ)₂
Meingast, C.; Shukla, A.; Wang, L.; Heid, R.; Hardy, F.; Frachet, M.; Willa, K.; Lacmann, T.; Le Tacon, M.; Merz, M.; Haghighirad, A.-A.; Wolf, T.
2022. Physical Review B, 106 (14), Article no: 144507. doi:10.1103/PhysRevB.106.144507
Dynamics of collective modes in an unconventional charge density wave system BaNi2As2
Pokharel, A. R.; Grigorev, V.; Mejas, A.; Dong, T.; Haghighirad, A. A.; Heid, R.; Yao, Y.; Merz, M.; Le Tacon, M.; Demsar, J.
2022. Communications Physics, 5 (1), Artkl.Nr.: 141. doi:10.1038/s42005-022-00919-x
Magnetic domain walls of the van der Waals material Fe3GeTe2
Yang, H.-H.; Bansal, N.; Rüßmann, P.; Hoffmann, M.; Zhang, L.; Go, D.; Li, Q.; Haghighirad, A.; Sen, K.; Bluegel, S.; Le Tacon, M.; Mokrousov, Y.; Wulfhekel, W.
2022. 2D Materials, 9 (2), Art.Nr. 025022. doi:10.1088/2053-1583/ac5d0e
Magnetotransport of SrIrO 3 -based heterostructures
Jaiswal, A. K.; Schneider, R.; Le Tacon, M.; Fuchs, D.
2022. AIP Advances, 12 (3), Art.-Nr.: 035120. doi:10.1063/9.0000325
Absence of temperature-dependent phonon anomalies in Sr₂IrO₄ and Sr3Ir₂O₇
Sen, K.; Heid, R.; Souliou, S. M.; Boll, D.; Bosak, A.; Sung, N. H.; Bertinshaw, J.; Gretarsson, H.; Kim, B. J.; Weber, F.; Le Tacon, M.
2022. Physical Review B, 105 (4), Article no: 045142. doi:10.1103/PhysRevB.105.045142
Direct Observation of Strong Anomalous Hall Effect and Proximity-induced Ferromagnetic State in SrIrO₃
Jaiswal, A. K.; Wang, D.; Wollersen, V.; Schneider, R.; Le Tacon, M.; Fuchs, D.
2022. Advanced materials, 34 (14), Article no: 2109163. doi:10.1002/adma.202109163
Effect of pseudogap on electronic anisotropy in the strain dependence of the superconducting T of underdoped YBa₂Cu₃Oy
Frachet, M.; Campbell, D. J.; Missiaen, A.; Benhabib, S.; Laliberté, F.; Borgnic, B.; Loew, T.; Porras, J.; Nakata, S.; Keimer, B.; Le Tacon, M.; Proust, C.; Paul, I.; LeBoeuf, D.
2022. Physical Review B, 105 (4), 045110. doi:10.1103/PhysRevB.105.045110
Strange bedfellows inside a superconductor
Le Tacon, M.
2021. Science, 373 (6562), 1438–1439. doi:10.1126/science.abi9685
In-plane Isotropy of the Low Energy Phonon Anomalies in YBaCuO
Souliou, S.-M.; Sen, K.; Heid, R.; Nakata, S.; Wang, L.; Kim, H.- ho; Uchiyama, H.; Merz, M.; Minola, M.; Keimer, B.; Le Tacon, M.
2021. Journal of the Physical Society of Japan, 90 (11), Art.-Nr.: 111006. doi:10.7566/JPSJ.90.111006
Evidence for nesting-driven charge density wave instabilities in the quasi-two-dimensional material LaAgSb
Bosak, A.; Souliou, S.-M.; Faugeras, C.; Heid, R.; Molas, M. R.; Chen, R.-Y.; Wang, N.-L.; Potemski, M.; Le Tacon, M.
2021. Physical review research, 3 (3), Art.-Nr.: 033020. doi:10.1103/PhysRevResearch.3.033020
Unconventional quantum vortex matter state hosts quantum oscillations in the underdoped high-temperature cuprate superconductors
Hsu, Y.-T.; Hartstein, M.; Davies, A. J.; Hickey, A. J.; Chan, M. K.; Porras, J.; Loew, T.; Taylor, S. V.; Liu, H.; Eaton, A. G.; Le Tacon, M.; Zuo, H.; Wang, J.; Zhu, Z.; Lonzarich, G. G.; Keimer, B.; Harrison, N.; Sebastian, S. E.
2021. Proceedings of the National Academy of Sciences of the United States of America, 118 (7), e2021216118. doi:10.1073/pnas.2021216118
Charge Density Waves in YBa₂Cu₃O₆₆₇ Probed by Resonant X-Ray Scattering under Uniaxial Compression
Kim, H.-H.; Lefrançois, E.; Kummer, K.; Fumagalli, R.; Brookes, N. B.; Betto, D.; Nakata, S.; Tortora, M.; Porras, J.; Loew, T.; Barber, M. E.; Braicovich, L.; Mackenzie, A. P.; Hicks, C. W.; Keimer, B.; Minola, M.; Le Tacon, M.
2021. Physical review letters, 126 (3), Article no: 037002. doi:10.1103/PhysRevLett.126.037002
Inelastic x-ray scattering studies of phonon dispersions in superconductors at high pressures
Souliou, S. M.; Bosak, A.; Garbarino, G.; Le Tacon, M.
2020. Superconductor science and technology, 33 (12), Art. Nr.: 124004. doi:10.1088/1361-6668/abbdc3
Electronic correlations in the van der Waals ferromagnet Fe₃ GeTe₂ revealed by its charge dynamics
Corasaniti, M.; Yang, R.; Sen, K.; Willa, K.; Merz, M.; Haghighirad, A. A.; Le Tacon, M.; Degiorgi, L.
2020. Physical review / B, 102 (16), Art.-Nr.: 161109. doi:10.1103/PhysRevB.102.161109
Influence of the vicinal substrate miscut on the anisotropic two-dimensional electronic transport in AlO–SrTiO heterostructures
Wolff, K.; Schäfer, R.; Arnold, D.; Schneider, R.; Le Tacon, M.; Fuchs, D.
2020. Journal of applied physics, 128 (8), Art.Nr. 085302. doi:10.1063/5.0010328
Anomalous pressure dependence of the electronic transport and anisotropy in SrIrO₃ films
Zaitsev, A. G.; Beck, A.; Jaiswal, A. K.; Singh, R.; Schneider, R.; Le Tacon, M.; Fuchs, D.
2020. Journal of physics / Condensed matter, 32 (34), Article no: 345601. doi:10.1088/1361-648X/ab8a9e
Structural, Electronic and Magnetic Properties of a Few Nanometer-Thick Superconducting NdBa₂Cu₃O₇ Films
Moretti Sala, M.; Salluzzo, M.; Minola, M.; De Luca, G. M.; Dellea, G.; Srot, V.; Wang, Y.; Aken, P. A. van; Le Tacon, M.; Keimer, B.; Dallera, C.; Braicovich, L.; Ghiringhelli, G.
2020. Nanomaterials, 10 (4), Article: 817. doi:10.3390/nano10040817