Scattering-dominated high-temperature phase of 1T−TiSe2 : An optical conductivity study

  title={Scattering-dominated high-temperature phase of 1T−TiSe2 : An optical conductivity study},
  author={Kristijan Velebit and Petar Popvcevi'c and Ivo Batisti'c and M. Eichler and Helmuth Berger and L'aszl'o Forr'o and Martin Dressel and Neven Barivsi'c and Eduard Tutivs Institute of Physics and Zagreb and Croatia. and 1. Physikalisches Institut and Universitat Stuttgart and Stuttgart and H Germany and Institute of Metal Physics and Vienna University of Technology and Vienna and Austria and Dep. of Physics and Faculty of Computer Science and University of Zagreb and Ecole polytechnique f'ed'erale de Lausanne and Lpmc and Lausanne and Switzerland.},
  journal={Physical Review B},
The controversy regarding the precise nature of the high-temperature phase of 1T -TiS_e2 lasts for decades. It has intensified in recent times when new evidence for the excitonic origin of the low-temperature charge-density wave state started to unveil. Here we address the problem of the high-temperature phase through precise measurements and detailed analysis of the optical response of 1T -TiS_e2 single crystals. The separate responses of electron and hole subsystems are identified and… 
6 Citations

Figures and Tables from this paper

Phase separation in the vicinity of Fermi surface hot spots

Spatially inhomogeneous electronic states are expected to be key ingredients for the emergence of superconducting phases in quantum materials hosting charge-density-waves (CDWs). Prototypical

Enhanced photocurrent response speed in charge-density-wave phase of TiSe2-metal junctions.

Experimental results reveal a significant enhancement in the response speed upon cooling to the charge-density-wave (CDW) phase transition temperature (TCDW = 206 K), which may result from dramatic reduction in carrier scattering that occurs as a result of the switching between the normal and CDW phases of TiSe2.

Fermi Surface Reconstruction and Electron Dynamics at the Charge-Density-Wave Transition in TiSe_{2}.

TiSe_{2} is highlighted as a prototypical system to study the Fermi surface reconstruction at a density-wave transition with the carrier concentrations and dynamics dominated by the CDW and the associated bosonic mode.

Investigation of the non-equilibrium state of strongly correlated materials by complementary ultrafast spectroscopy techniques

Photoinduced non-thermal phase transitions are new paradigms of exotic non-equilibrium physics of strongly correlated materials. An ultrashort optical pulse can drive the system to a new order

Infrared spectroscopic measurements of structural transition and charge dynamics in 1T−TiTe2 under pressure

HP&SRPD, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India Department of Physical Sciences, Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India CNR-IOM, Laboratorio TASC,

On the origin of the anomalous peak in the resistivity of TiSe2

We gratefully acknowledge support from The Leverhulme Trust (Grant No. RL-2016-006) and The Royal Society.



Electrodynamics of Solids: Optical Properties of Electrons in Matter

The authors of this book present a thorough discussion of the optical properties of solids, with a focus on electron states and their response to electrodynamic fields. A review of the fundamental

Introduction to Solid State Physics

3rd edition, complete modern revision C. Kittel London: John Wiley. 1966. Pp. 648. Price £4 14s. Kind's new edition is to be welcomed. There is a revised format and attractive illustrations, and with

Supplemental Material to

This research presents a novel and scalable approach to solve the challenge of integrating reinforcement learning and reinforcement learning into the decision-making process.

Theory of excitons

Science 252

  • 1501
  • 1991

Topics in Applied Physics: Light Scattering in Solids VI

  • edited by M. Cardona and G. Güntherodt
  • 1991

Although there were previous investigations into the optical properties of 1T-TiSe 2 , 23 not much attention was given to the low-frequency response of the high-temperature phase

    B: Condens

    • Matter 64, 189
    • 1986

    1000 cm -1 , to the extent of preserving the overall quality of fits shown in Fig

    • Phys. Rev. B
    • 2010