Emergence of charge density wave domain walls above the superconducting dome in 1T-TiSe2
نویسندگان
چکیده
منابع مشابه
Role of Incommensuration in the charge density wave and superconducting states of 1T-TiSe2
A brief review of some of the most recent experiments on the charge density wave (CDW) transition in 1T-TiSe2 is presented. With increasing pressure or intercalation, the CDW can be suppressed and a superconducting (SC) phase emerges. In the pristine 1T-TiSe2, a commensurate CDW develops around 202 K. These experiments show that by tuning these external parameters like pressure, or doping, the ...
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We report a Raman scattering study of low-temperature, pressure-induced melting of the charge-density-wave (CDW) phase of 1T-TiSe2. Our measurements reveal that the collapse of the CDW state occurs in three stages: (i) For P<5 kbar, the pressure dependence of the CDW amplitude mode energies and intensities are indicative of a "crystalline" CDW regime; (ii) for 5<P<25 kbar, there is a decrease i...
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A. M. Novello,1,* B. Hildebrand,2,† A. Scarfato,1 C. Didiot,2 G. Monney,2 A. Ubaldini,1 H. Berger,3 D. R. Bowler,4 P. Aebi,2 and Ch. Renner1 1Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland 2Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, CH-1700 Fribourg, Switzerland 3Institut de Génie Ato...
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We use time-resolved optical reflectivity and x-ray diffraction with femtosecond resolution to study the dynamics of the structural order parameter of the charge density wave phase in TiSe2. We find that the energy density required to melt the charge density wave nonthermally is substantially lower than that required for thermal suppression and is comparable to the charge density wave condensat...
متن کاملMapping of electron-hole excitations in the charge-density-wave system 1T-TiSe2 using resonant inelastic x-ray scattering.
In high-resolution resonant inelastic x-ray scattering at the Ti L edge of the charge-density-wave system 1T-TiSe(2), we observe sharp low energy loss peaks from electron-hole pair excitations developing at low temperature. These excitations are strongly dispersing as a function of the transferred momentum of light. We show that the unoccupied bands close to the Fermi level can effectively be p...
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ژورنال
عنوان ژورنال: Nature Physics
سال: 2014
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys2935