Large Kohn Anomaly and Phonon Collapse Induced by Charge Density Wave in UPt2⁢Si2

Lee, Jooseop; Chappell, Greta L.; Baumbach, Ryan E.; Said, Ayman H.; Zaliznyak, Igor A.

doi:10.1103/clg4-2zzb

Large Kohn Anomaly and Phonon Collapse Induced by Charge Density Wave in UPt_2⁢Si₂

Journal Article · Fri Jul 18 04:00:00 EDT 2025 · Physical Review Letters

DOI:https://doi.org/10.1103/clg4-2zzb· OSTI ID:2583717

^[1]; Chappell, Greta L. ^[2]; ^[3]; Said, Ayman H. ^[4]; ^[5]

Hongik University, Seoul (Korea, Republic of); Institute for Basic Science, Pohang (Korea, Republic of)
Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab); Univ. of California, Santa Cruz, CA (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Brookhaven National Laboratory (BNL), Upton, NY (United States)

Using high-energy-resolution inelastic x-ray scattering, we observe anomalous softening and damping of the transverse acoustic phonon in UPt₂⁢Si₂ as the system is cooled toward the charge density wave (CDW) transition temperature 𝑇_CDW. The phonon exhibits a marked Kohn-type anomaly around the CDW wave vector 𝑄_CDW and becomes overdamped within a finite momentum range already well above 𝑇_CDW. The dispersion anomaly is consistent with potential Fermi surface nesting, which together with the extended phonon collapse indicates strong electron-phonon coupling. The transition temperature estimated from the phonon softening is markedly lower than 𝑇_CDW, consistent with a primarily electronic instability rather than a phonon-driven transition. In conclusion, our results establish UPt_2⁢Si₂ as a prime example of a strongly correlated electron CDW system with exceptionally strong electron-phonon coupling driving phonon softening and collapse.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); Institute for Basic Science (IBS) in South Korea; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: SC0012704; AC02-06CH11357

OSTI ID:: 2583717

Report Number(s):: BNL--228524-2025-JAAM

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 135; ISSN 1079-7114; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

References (58)

Neutron Scattering with a Triple-Axis Spectrometer Shirane, Gen; Shapiro, Stephen M.; Tranquada, John M. https://doi.org/10.1017/CBO9780511534881	book	January 2009
Time-domain classification of charge-density-wave insulators Hellmann, S.; Rohwer, T.; Kalläne, M. Nature Communications, Vol. 3, Issue 1 https://doi.org/10.1038/ncomms2078	journal	January 2012
Momentum-resolved hidden-order gap reveals symmetry breaking and origin of entropy loss in URu2Si2 Bareille, C.; Boariu, F. L.; Schwab, H. Nature Communications, Vol. 5, Issue 1 https://doi.org/10.1038/ncomms5326	journal	July 2014
Hidden order in URu2Si2 originates from Fermi surface gapping induced by dynamic symmetry breaking Elgazzar, S.; Rusz, J.; Amft, M. Nature Materials, Vol. 8, Issue 4 https://doi.org/10.1038/nmat2395	journal	February 2009
Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67 Chang, J.; Blackburn, E.; Holmes, A. T. Nature Physics, Vol. 8, Issue 12 https://doi.org/10.1038/nphys2456	journal	October 2012
Inelastic X-ray scattering in YBa2Cu3O6.6 reveals giant phonon anomalies and elastic central peak due to charge-density-wave formation Le Tacon, M.; Bosak, A.; Souliou, S. M. Nature Physics, Vol. 10, Issue 1 https://doi.org/10.1038/nphys2805	journal	November 2013
Emergence of charge density wave domain walls above the superconducting dome in 1T-TiSe2 Joe, Y. I.; Chen, X. M.; Ghaemi, P. Nature Physics, Vol. 10, Issue 6 https://doi.org/10.1038/nphys2935	journal	April 2014
Itinerant density wave instabilities at classical and quantum critical points Feng, Yejun; van Wezel, Jasper; Wang, Jiyang Nature Physics, Vol. 11, Issue 10 https://doi.org/10.1038/nphys3416	journal	July 2015
Gapped itinerant spin excitations account for missing entropy in the hidden-order state of URu2Si2 Wiebe, C. R.; Janik, J. A.; MacDougall, G. J. Nature Physics, Vol. 3, Issue 2 https://doi.org/10.1038/nphys522	journal	January 2007
Ultrafast charge ordering by self-amplified exciton–phonon dynamics in TiSe2 Lian, Chao; Zhang, Sheng-Jie; Hu, Shi-Qi Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-019-13672-7	journal	January 2020
Direct observation of excitonic instability in Ta2NiSe5 Kim, Kwangrae; Kim, Hoon; Kim, Jonghwan Nature Communications, Vol. 12, Issue 1 https://doi.org/10.1038/s41467-021-22133-z	journal	March 2021
Precursor region with full phonon softening above the charge-density-wave phase transition in 2H-TaSe2 Shen, Xingchen; Heid, Rolf; Hott, Roland Nature Communications, Vol. 14, Issue 1 https://doi.org/10.1038/s41467-023-43094-5	journal	November 2023
Intimate link between charge density wave, pseudogap and superconducting energy scales in cuprates Loret, B.; Auvray, N.; Gallais, Y. Nature Physics, Vol. 15, Issue 8 https://doi.org/10.1038/s41567-019-0509-5	journal	April 2019
The mechanism of charge density wave in Pt-based layered superconductors: SrPt2As2 and LaPt2Si2 Kim, Sooran; Kim, Kyoo; Min, B. I. Scientific Reports, Vol. 5, Issue 1 https://doi.org/10.1038/srep15052	journal	October 2015
Alternative route to charge density wave formation in multiband systems Eiter, H. -M.; Lavagnini, M.; Hackl, R. Proceedings of the National Academy of Sciences, Vol. 110, Issue 1 https://doi.org/10.1073/pnas.1214745110	journal	December 2012
Evidence for a vestigial nematic state in the cuprate pseudogap phase Mukhopadhyay, Sourin; Sharma, Rahul; Kim, Chung Koo Proceedings of the National Academy of Sciences, Vol. 116, Issue 27 https://doi.org/10.1073/pnas.1821454116	journal	June 2019
From antiferromagnetic and hidden order to Pauli paramagnetism in U M ₂ Si ₂ compounds with 5 f electron duality Amorese, Andrea; Sundermann, Martin; Leedahl, Brett Proceedings of the National Academy of Sciences, Vol. 117, Issue 48 https://doi.org/10.1073/pnas.2005701117	journal	November 2020
Generic character of charge and spin density waves in superconducting cuprates Lee, Sangjun; Huang, Edwin W.; Johnson, Thomas A. Proceedings of the National Academy of Sciences, Vol. 119, Issue 15 https://doi.org/10.1073/pnas.2119429119	journal	April 2022
Dynamical, scattering and dielectric properties of ferroelectric crystals Cochran, W. Advances in Physics, Vol. 18, Issue 72 https://doi.org/10.1080/00018736900101297	journal	March 1969
Structural phase transitions I. Landau theory Cowley, R. A. Advances in Physics, Vol. 29, Issue 1 https://doi.org/10.1080/00018738000101346	journal	February 1980
Misconceptions associated with the origin of charge density waves Zhu, Xuetao; Guo, Jiandong; Zhang, Jiandi Advances in Physics: X, Vol. 2, Issue 3 https://doi.org/10.1080/23746149.2017.1343098	journal	May 2017
Periodic lattice distortions and charge density waves in one- and two-dimensional metals Friend, R. H.; Jerome, D. Journal of Physics C: Solid State Physics, Vol. 12, Issue 8 https://doi.org/10.1088/0022-3719/12/8/009	journal	April 1979
Charge density waves in strongly correlated electron systems Chen, Chih-Wei; Choe, Jesse; Morosan, E. Reports on Progress in Physics, Vol. 79, Issue 8 https://doi.org/10.1088/0034-4885/79/8/084505	journal	July 2016
Hybridisation effects in UPt ₂ Si ₂ Steeman, R. A.; Frikkee, E.; Mentink, S. A. M. Journal of Physics: Condensed Matter, Vol. 2, Issue 18 https://doi.org/10.1088/0953-8984/2/18/003	journal	May 1990
On the origin of charge-density waves in select layered transition-metal dichalcogenides Rossnagel, K. Journal of Physics: Condensed Matter, Vol. 23, Issue 21 https://doi.org/10.1088/0953-8984/23/21/213001	journal	May 2011
Hidden order and beyond: an experimental—theoretical overview of the multifaceted behavior of URu ₂ Si ₂ Mydosh, J. A.; Oppeneer, P. M.; Riseborough, P. S. Journal of Physics: Condensed Matter, Vol. 32, Issue 14 https://doi.org/10.1088/1361-648x/ab5eba	journal	January 2020
Quantum Theory of Solids Peierls, R. E. https://doi.org/10.1093/acprof:oso/9780198507819.001.0001	book	February 2001
Empty perovskites as Coulomb floppy networks: Entropic elasticity and negative thermal expansion Tkachenko, Alexei V.; Zaliznyak, Igor A. Physical Review B, Vol. 103, Issue 13 https://doi.org/10.1103/PhysRevB.103.134106	journal	April 2021
Crystalline electric field effects in UPt 2 Si 2 and URu 2 Si 2 Nieuwenhuys, G. J. Physical Review B, Vol. 35, Issue 10 https://doi.org/10.1103/PhysRevB.35.5260	journal	April 1987
Fermi-surface nesting and the origin of the charge-density wave in Nb Se 2 Johannes, M.; Mazin, I.; Howells, C. Physical Review B, Vol. 73, Issue 20 https://doi.org/10.1103/PhysRevB.73.205102	journal	May 2006
Fermi surface nesting and the origin of charge density waves in metals Johannes, M. D.; Mazin, I. I. Physical Review B, Vol. 77, Issue 16 https://doi.org/10.1103/PhysRevB.77.165135	journal	April 2008
Electronic structure and Fermi surface of paramagnetic and antiferromagnetic UPt 2 Si 2 Elgazzar, S.; Rusz, J.; Oppeneer, P. M. Physical Review B, Vol. 86, Issue 7 https://doi.org/10.1103/PhysRevB.86.075104	journal	August 2012
Extended Phonon Collapse and the Origin of the Charge-Density Wave in 2 H − NbSe 2 Weber, F.; Rosenkranz, S.; Castellan, J. -P. Physical Review Letters, Vol. 107, Issue 10 https://doi.org/10.1103/PhysRevLett.107.107403	journal	September 2011
Electron-Phonon Coupling and the Soft Phonon Mode in TiSe 2 Weber, F.; Rosenkranz, S.; Castellan, J. -P. Physical Review Letters, Vol. 107, Issue 26 https://doi.org/10.1103/PhysRevLett.107.266401	journal	December 2011
Dual Nature of Magnetism in a Uranium Heavy-Fermion System Lee, Jooseop; Matsuda, Masaaki; Mydosh, John A. Physical Review Letters, Vol. 121, Issue 5 https://doi.org/10.1103/PhysRevLett.121.057201	journal	July 2018
The dynamics of charge-density waves Grüner, G. Reviews of Modern Physics, Vol. 60, Issue 4 https://doi.org/10.1103/RevModPhys.60.1129	journal	October 1988
Colloquium : Hidden order, superconductivity, and magnetism: The unsolved case of URu 2 Si 2 Mydosh, J. A.; Oppeneer, P. M. Reviews of Modern Physics, Vol. 83, Issue 4 https://doi.org/10.1103/RevModPhys.83.1301	journal	November 2011
Signatures of coupling between spin waves and Dirac fermions in YbMnBi 2 Sapkota, A.; Classen, L.; Stone, M. B. Physical Review B, Vol. 101, Issue 4 https://doi.org/10.1103/physrevb.101.041111	journal	January 2020
Charge density wave with anomalous temperature dependence in UPt 2 Si 2 Lee, Jooseop; Prokeš, Karel; Park, Sohee Physical Review B, Vol. 102, Issue 4 https://doi.org/10.1103/physrevb.102.041112	journal	July 2020
Breakdown of sound in superfluid helium Nichitiu, Marc D.; Brown, Craig; Zaliznyak, Igor A. Physical Review B, Vol. 109, Issue 6 https://doi.org/10.1103/physrevb.109.l060502	journal	February 2024
Neutron-scattering investigations of the Kohn anomaly and of the phase and amplitude charge-density-wave excitations of the blue bronze K 0.3 MoO 3 Pouget, J. P.; Hennion, B.; Escribe-Filippini, C. Physical Review B, Vol. 43, Issue 10 https://doi.org/10.1103/physrevb.43.8421	journal	April 1991
Critical Neutron Scattering in SrTi O 3 and KMn F 3 Shapiro, S. M.; Axe, J. D.; Shirane, G. Physical Review B, Vol. 6, Issue 11 https://doi.org/10.1103/physrevb.6.4332	journal	December 1972
Charge-density wave and one-dimensional electronic spectra in blue bronze: Incoherent solitons and spin-charge separation Mou, Daixiang; Konik, R. M.; Tsvelik, A. M. Physical Review B, Vol. 89, Issue 20 https://doi.org/10.1103/physrevb.89.201116	journal	May 2014
Wave-vector-dependent electron-phonon coupling and the charge-density-wave transition in TbT e 3 Maschek, M.; Rosenkranz, S.; Heid, R. Physical Review B, Vol. 91, Issue 23 https://doi.org/10.1103/physrevb.91.235146	journal	June 2015
Large isotropic negative thermal expansion above a structural quantum phase transition Handunkanda, Sahan U.; Curry, Erin B.; Voronov, Vladimir Physical Review B, Vol. 92, Issue 13 https://doi.org/10.1103/physrevb.92.134101	journal	October 2015
Charge ordering and correlation effects in the extended Hubbard model Terletska, Hanna; Chen, Tianran; Gull, Emanuel Physical Review B, Vol. 95, Issue 11 https://doi.org/10.1103/physrevb.95.115149	journal	March 2017
Neutron Inelastic Scattering Study of Tetrathiafulvalene Tetracyanoquinodimethane (TTF-TCNQ) Mook, H. A.; Watson, Charles R. Physical Review Letters, Vol. 36, Issue 14 https://doi.org/10.1103/physrevlett.36.801	journal	April 1976
Formation of Incommensurate Charge Density Waves in Cuprates Miao, H.; Fumagalli, R.; Rossi, M. Physical Review X, Vol. 9, Issue 3 https://doi.org/10.1103/physrevx.9.031042	journal	September 2019
High-energy-resolution inelastic X-ray scattering spectrometer at beamline 30-ID of the Advanced Photon Source Said, Ayman H.; Sinn, Harald; Toellner, Thomas S. Journal of Synchrotron Radiation, Vol. 27, Issue 3 https://doi.org/10.1107/s1600577520002854	journal	April 2020
Mechanisms of electron-phonon coupling unraveled in momentum and time: The case of soft phonons in TiSe ₂ Otto, Martin R.; Pöhls, Jan-Hendrik; René de Cotret, Laurent P. Science Advances, Vol. 7, Issue 20 https://doi.org/10.1126/sciadv.abf2810	journal	May 2021
Ubiquitous Interplay Between Charge Ordering and High-Temperature Superconductivity in Cuprates da Silva Neto, E. H.; Aynajian, P.; Frano, A. Science, Vol. 343, Issue 6169 https://doi.org/10.1126/science.1243479	journal	December 2013
Numerical evidence of fluctuating stripes in the normal state of high- T _c cuprate superconductors Huang, Edwin W.; Mendl, Christian B.; Liu, Shenxiu Science, Vol. 358, Issue 6367 https://doi.org/10.1126/science.aak9546	journal	November 2017
Stripe order in the underdoped region of the two-dimensional Hubbard model Zheng, Bo-Xiao; Chung, Chia-Min; Corboz, Philippe Science, Vol. 358, Issue 6367 https://doi.org/10.1126/science.aam7127	journal	November 2017
Structural Phase Transitions A. Cowley, R.; M. Shapiro, S. Journal of the Physical Society of Japan, Vol. 75, Issue 11 https://doi.org/10.1143/jpsj.75.111001	journal	November 2006
Charge Correlations in Cuprate Superconductors Hayden, Stephen M.; Tranquada, John M. Annual Review of Condensed Matter Physics, Vol. 15, Issue 1 https://doi.org/10.1146/annurev-conmatphys-032922-094430	journal	March 2024
The Effects of Soft Modes on the Structure and Properties of Materials Fleury, P. A. Annual Review of Materials Science, Vol. 6, Issue 1 https://doi.org/10.1146/annurev.ms.06.080176.001105	journal	August 1976
Density Waves in Solids Grüner, George https://doi.org/10.1201/9780429501012	book	May 2019
Charge Density Wave and Superconductivity of RPt ₂ Si ₂ (R = Y, La, Nd, and Lu) Nagano, Yutaro; Araoka, Nobutaka; Mitsuda, Akihiro Journal of the Physical Society of Japan, Vol. 82, Issue 6 https://doi.org/10.7566/jpsj.82.064715	journal	June 2013

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