Ultrafast resonant soft x-ray diffraction dynamics of the charge density wave in ${\mathrm{TbTe}}_{3}$

Ultrafast resonant soft x-ray diffraction dynamics of the charge density wave in ${TbTe}_{3}$

R. G. Moore, W. S. Lee, P. S. Kirchman, Y. D. Chuang, A. F. Kemper, M. Trigo, L. Patthey, D. H. Lu, O. Krupin, M. Yi, D. A. Reis, D. Doering, P. Denes, W. F. Schlotter, J. J. Turner, G. Hays, P. Hering, T. Benson, J.-H. Chu, T. P. Devereaux, I. R. Fisher, Z. Hussain, and Z.-X. Shen

Phys. Rev. B 93, 024304 – Published 25 January 2016

Abstract

Understanding the emergence of collective behavior in correlated electron systems remains at the forefront of modern condensed matter physics. Disentangling the degrees of freedom responsible for collective behavior can lead to insights into the microscopic origins of emergent properties and phase transitions. Utilizing an optical pump, resonant soft x-ray diffraction probe we are able to track, in real time, the dynamics of the charge density wave (CDW) in ${TbTe}_{3}$ , a model system that violates traditional views of a Fermi surface nested CDW. We observe coherent oscillations corresponding to the CDW amplitude mode at $2.4$ THz and a coherent optical phonon mode at $\sim 1.7 THz$ . We show how such observations reveal the anisotropic energy optimization between in-plane Te charge density modulations and the three-dimensional lattice coupling.

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Received 14 September 2015
Revised 25 November 2015

DOI:https://doi.org/10.1103/PhysRevB.93.024304

Authors & Affiliations

R. G. Moore^1,*, W. S. Lee^1,†, P. S. Kirchman¹, Y. D. Chuang², A. F. Kemper^1,3, M. Trigo^1,4, L. Patthey^1,5, D. H. Lu⁶, O. Krupin^7,8, M. Yi¹, D. A. Reis^1,4, D. Doering², P. Denes², W. F. Schlotter⁸, J. J. Turner⁸, G. Hays⁸, P. Hering⁸, T. Benson⁸, J.-H. Chu⁹, T. P. Devereaux¹, I. R. Fisher⁹, Z. Hussain², and Z.-X. Shen^1,‡

¹Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
²Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
³Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
⁴Stanford PULSE Institute for Ulatrafast Energy Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
⁵Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen-PSI, Switzerland
⁶Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
⁷European XFEL, Hamburg, Germany
⁸Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
⁹Geballe Laboratory for Advanced Materials and Department of Applied Physics, Stanford University, Stanford, California 94305, USA

^*Corresponding author: rgmoore@slac.stanford.edu
^†Corresponding author: leews@stanford.edu
^‡Corresponding author: zxshen@stanford.edu

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Vol. 93, Iss. 2 — 1 January 2016

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Physical Review B

covering condensed matter and materials physics

Ultrafast resonant soft x-ray diffraction dynamics of the charge density wave in ${TbTe}_{3}$

R. G. Moore, W. S. Lee, P. S. Kirchman, Y. D. Chuang, A. F. Kemper, M. Trigo, L. Patthey, D. H. Lu, O. Krupin, M. Yi, D. A. Reis, D. Doering, P. Denes, W. F. Schlotter, J. J. Turner, G. Hays, P. Hering, T. Benson, J.-H. Chu, T. P. Devereaux, I. R. Fisher, Z. Hussain, and Z.-X. Shen

Phys. Rev. B 93, 024304 – Published 25 January 2016

Abstract

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Physical Review B

covering condensed matter and materials physics

Ultrafast resonant soft x-ray diffraction dynamics of the charge density wave in TbTe3

R. G. Moore, W. S. Lee, P. S. Kirchman, Y. D. Chuang, A. F. Kemper, M. Trigo, L. Patthey, D. H. Lu, O. Krupin, M. Yi, D. A. Reis, D. Doering, P. Denes, W. F. Schlotter, J. J. Turner, G. Hays, P. Hering, T. Benson, J.-H. Chu, T. P. Devereaux, I. R. Fisher, Z. Hussain, and Z.-X. Shen

Phys. Rev. B 93, 024304 – Published 25 January 2016

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Ultrafast resonant soft x-ray diffraction dynamics of the charge density wave in ${TbTe}_{3}$