Superconducting energy gap of 2H-NbSe2 in phonon spectroscopy

Weber, F.; Rosenkranz, S.; Heid, R.; Said, A. H.

doi:10.1103/PhysRevB.94.140504

Title: Superconducting energy gap of $2 H - NbS e_{2}$ in phonon spectroscopy

Journal Article · Tue Oct 25 00:00:00 EDT 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.94.140504· OSTI ID:1352563

Weber, F. ^[1]; Rosenkranz, S. ^[2]; Heid, R. ^[1]; Said, A. H. ^[2]

Karlsruhe Institute of Technology, Karlsruhe (Germany)
Argonne National Lab. (ANL), Argonne, IL (United States)

We present a high-energy-resolution inelastic x-ray scattering data investigation of the charge-density-wave (CDW) soft phonon mode upon entering the superconducting state in 2H–NbSe₂. Measurements were done close to the CDW ordering wave vector qCDW at q=q_CDW + (0,0,l), 0.15 ≤ l ≤ 0.5, for T = 10K (CDW order) and 3.8K (CDW order+superconductivity). We observe changes of the phonon line shape that are characteristic for systems with strong electron-phonon coupling in the presence of a superconducting energy gap 2Δ_c and from which we can demonstrate an l dependence of the superconducting gap. Reversely, our data imply that the CDW energy gap is strongly localized along the c* direction. The confinement of the CDW gap to a very small momentum region explains the rather low competition and easy coexistence of CDW order and superconductivity in 2H–NbSe₂. Furthermore, the energy gained by opening Δ_CDW seems to be too small to be the driving force of the phase transition at T_CDW = 33K, which is better described as an electron-phonon coupling driven structural phase transition.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Materials Sciences and Engineering Division; Helmholtz Association

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1352563

Alternate ID(s):: OSTI ID: 1329985

Journal Information:: Physical Review B, Vol. 94, Issue 14; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 8 works

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References (37)

Pressure Induced Superconductivity in Pristine $1 T − {TiSe}_{2}$ Kusmartseva, A. F.; Sipos, B.; Berger, H. Physical Review Letters, Vol. 103, Issue 23 https://doi.org/10.1103/PhysRevLett.103.236401	journal	November 2009
Pressure-Induced Superconducting Phase in the Charge-Density-Wave Compound Terbium Tritelluride Hamlin, J. J.; Zocco, D. A.; Sayles, T. A. Physical Review Letters, Vol. 102, Issue 17 https://doi.org/10.1103/PhysRevLett.102.177002	journal	April 2009
Charge order from orbital-dependent coupling evidenced by NbSe2 Flicker, Felix; van Wezel, Jasper Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms8034	journal	May 2015
Effect of magnetic impurities on the vortex lattice properties in ${NbSe}_{2}$ single crystals Iavarone, M.; Di Capua, R.; Karapetrov, G. Physical Review B, Vol. 78, Issue 17 https://doi.org/10.1103/PhysRevB.78.174518	journal	November 2008
Strong anharmonicity induces quantum melting of charge density wave in $2 H - {NbSe}_{2}$ under pressure Leroux, Maxime; Errea, Ion; Le Tacon, Mathieu Physical Review B, Vol. 92, Issue 14 https://doi.org/10.1103/PhysRevB.92.140303	journal	October 2015
Evidence for a connection between charge density waves and the pressure enhancement of superconductivity in 2H-NbSe2 Berthier, C.; Molinié, P.; Jérome, D. Solid State Communications, Vol. 18, Issue 9-10 https://doi.org/10.1016/0038-1098(76)90986-8	journal	January 1976
Strongly enhanced charge-density-wave order in monolayer NbSe₂ Xi, Xiaoxiang; Zhao, Liang; Wang, Zefang Nature Nanotechnology, Vol. 10, Issue 9, p. 765-769 https://doi.org/10.1038/nnano.2015.143	journal	July 2015
Pressure Induced Effects on the Fermi Surface of Superconducting $2 H − {NbSe}_{2}$ Suderow, H.; Tissen, V. G.; Brison, J. P. Physical Review Letters, Vol. 95, Issue 11 https://doi.org/10.1103/PhysRevLett.95.117006	journal	September 2005
Pressure dependence of the charge-density-wave and superconducting states in ${GdTe}_{3}, {TbTe}_{3}$ , and ${DyTe}_{3}$ Zocco, D. A.; Hamlin, J. J.; Grube, K. Physical Review B, Vol. 91, Issue 20 https://doi.org/10.1103/PhysRevB.91.205114	journal	May 2015
Optical phonons and the soft mode in 2 $H$ -NbSe $_{2}$ Weber, F.; Hott, R.; Heid, R. Physical Review B, Vol. 87, Issue 24 https://doi.org/10.1103/PhysRevB.87.245111	journal	June 2013
Emergence of coherence in the charge-density wave state of 2H-NbSe2 Chatterjee, U.; Zhao, J.; Iavarone, M. Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms7313	journal	February 2015
Neutron Scattering with a Triple-Axis Spectrometer Shirane, Gen; Shapiro, Stephen M.; Tranquada, John M. https://doi.org/10.1017/CBO9780511534881	book	January 2009
Neutron-scattering profile of $Q \neq 0$ phonons in BCS superconductors Allen, Philip B.; Kostur, Vladimir N.; Takesue, Naohisa Physical Review B, Vol. 56, Issue 9 https://doi.org/10.1103/PhysRevB.56.5552	journal	September 1997
Gaps and kinks in the electronic structure of the superconductor $2 H$ -NbSe $_{2}$ from angle-resolved photoemission at 1 K Rahn, D. J.; Hellmann, S.; Kalläne, M. Physical Review B, Vol. 85, Issue 22 https://doi.org/10.1103/PhysRevB.85.224532	journal	June 2012
Superconductivity-induced distortions of phonon lineshapes in niobium Weber, F.; Pintschovius, L. Physical Review B, Vol. 82, Issue 2 https://doi.org/10.1103/PhysRevB.82.024509	journal	July 2010
Six-reflection meV-monochromator for synchrotron radiation Toellner, T. S.; Alatas, A.; Said, A. H. Journal of Synchrotron Radiation, Vol. 18, Issue 4 https://doi.org/10.1107/S0909049511017535	journal	May 2011
Layer structure superconductor Revolinsky, E.; Lautenschlager, E. P.; Armitage, C. H. Solid State Communications, Vol. 1, Issue 3 https://doi.org/10.1016/0038-1098(63)90358-2	journal	August 1963
The Low‐Temperature Transport Properties of NbSe ₂ Lee, H. N. S.; McKinzie, H.; Tannhauser, D. S. Journal of Applied Physics, Vol. 40, Issue 2 https://doi.org/10.1063/1.1657440	journal	February 1969
Direct Observation of the Superconducting Gap in Phonon Spectra Weber, F.; Kreyssig, A.; Pintschovius, L. Physical Review Letters, Vol. 101, Issue 23 https://doi.org/10.1103/PhysRevLett.101.237002	journal	December 2008
New developments in fabrication of high-energy-resolution analyzers for inelastic X-ray spectroscopy Said, Ayman H.; Sinn, Harald; Divan, Ralu Journal of Synchrotron Radiation, Vol. 18, Issue 3 https://doi.org/10.1107/S0909049511001828	journal	March 2011
A calculation of the electronic response function in 2H-NbSe ₂ including electron-phonon matrix element effects Doran, N. J. Journal of Physics C: Solid State Physics, Vol. 11, Issue 24 https://doi.org/10.1088/0022-3719/11/24/005	journal	December 1978
Strong-Coupling Theory of Charge-Density-Wave Transitions Varma, C. M.; Simons, A. L. Physical Review Letters, Vol. 51, Issue 2 https://doi.org/10.1103/PhysRevLett.51.138	journal	July 1983
From Mott state to superconductivity in 1T-TaS2 Sipos, B.; Kusmartseva, A. F.; Akrap, A. Nature Materials, Vol. 7, Issue 12 https://doi.org/10.1038/nmat2318	journal	November 2008
Study of Superlattice Formation in $2 H$ -Nb ${Se}_{2}$ and $2 H$ -Ta ${Se}_{2}$ by Neutron Scattering Moncton, D. E.; Axe, J. D.; DiSalvo, F. J. Physical Review Letters, Vol. 34, Issue 12 https://doi.org/10.1103/PhysRevLett.34.734	journal	March 1975
Superconductivity in CuxTiSe2 Morosan, E.; Zandbergen, H. W.; Dennis, B. S. Nature Physics, Vol. 2, Issue 8 https://doi.org/10.1038/nphys360	journal	July 2006
Phonon line shapes in the vortex state of the phonon-mediated superconductor YNi $_{2}$ B $_{2}$ C Weber, F.; Pintschovius, L.; Hradil, K. Physical Review B, Vol. 85, Issue 22 https://doi.org/10.1103/PhysRevB.85.224525	journal	June 2012
Characterization of collective ground states in single-layer NbSe2 Ugeda, Miguel M.; Bradley, Aaron J.; Zhang, Yi Nature Physics, Vol. 12, Issue 1 https://doi.org/10.1038/nphys3527	journal	November 2015
Quasiparticle Spectra, Charge-Density Waves, Superconductivity, and Electron-Phonon Coupling in $2 H − {N b S e}_{2}$ Valla, T.; Fedorov, A. V.; Johnson, P. D. Physical Review Letters, Vol. 92, Issue 8 https://doi.org/10.1103/PhysRevLett.92.086401	journal	February 2004
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 of $2 H - {NbSe}_{2}$ and its implications on the charge-density-wave mechanism Rossnagel, K.; Seifarth, O.; Kipp, L. Physical Review B, Vol. 64, Issue 23 https://doi.org/10.1103/PhysRevB.64.235119	journal	November 2001
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
New Mechanism for a Charge-Density-Wave Instability Rice, T. M.; Scott, G. K. Physical Review Letters, Vol. 35, Issue 2 https://doi.org/10.1103/PhysRevLett.35.120	journal	July 1975
Order parameter fluctuations at a buried quantum critical point Feng, Y.; Wang, J.; Jaramillo, R. Proceedings of the National Academy of Sciences, Vol. 109, Issue 19 https://doi.org/10.1073/pnas.1202434109	journal	April 2012
Two Energy Gaps and Fermi-Surface “Arcs” in ${NbSe}_{2}$ Borisenko, S. V.; Kordyuk, A. A.; Zabolotnyy, V. B. Physical Review Letters, Vol. 102, Issue 16 https://doi.org/10.1103/PhysRevLett.102.166402	journal	April 2009
Quantum phase transition from triangular to stripe charge order in NbSe2 Soumyanarayanan, A.; Yee, M. M.; He, Y. Proceedings of the National Academy of Sciences, Vol. 110, Issue 5 https://doi.org/10.1073/pnas.1211387110	journal	January 2013
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
The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides Johnston, David C. Advances in Physics, Vol. 59, Issue 6 https://doi.org/10.1080/00018732.2010.513480	journal	October 2010

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Electron-phonon coupling and superconductivity-induced distortion of the phonon lineshape in $V_{3} Si$ Sauer, A.; Zocco, D. A.; Said, A. H. Physical Review B, Vol. 99, Issue 13 https://doi.org/10.1103/physrevb.99.134511	journal	April 2019

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