Working Group Inelastic Photon Scattering

Selected Publications

[1]	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
[2]	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
[3]	Charge Density Waves in YBa₂Cu₃O_6.67 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
[4]	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
[5]	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

Bosonic excitation spectra of superconducting Bi $_{2}$ Sr $_{2}$ CaCu $_{2}$ O $_{8 + δ}$ and YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$ 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 $_{3}$
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 EuPd $_{2}$ Si $_{2}$
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 $_{c}$ of YBa $_{2}$ Cu $_{3}$ O $_{6.67}$ 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 $_{c}$ 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 YBa $_{2}$ Cu $_{3}$ O $_{6 + x}$
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 $_{2}$
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 YBa₂Cu₃O₆ $_{.}$ ₆₇ 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 Al $_{2}$ O $_{3}$ –SrTiO $_{3}$ 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