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We investigate the thermal-driven charge density wave (CDW) transition of two cubic superconducting intermetallic systems Lu(Pt1-xPdx)2In and (Sr1-xCax)3Ir4Sn13 by means of x-ray diffraction technique. A detailed analysis of the CDW…

Strongly Correlated Electrons · Physics 2020-05-27 F. B. Carneiro , L. S. I. Veiga , J. R. L. Mardegan , R. Khan , C. Macchiutti , A. Lopez , E. M. Bittar

We present measurements of the superconducting and charge density wave critical temperatures (Tc and TCDW) as a function of pressure in the transition metal dichalchogenides 2H-TaSe2 and 2H-TaS2. Resistance and susceptibility measurements…

The coexistence of charge density wave (CDW) and superconductivity in tantalum disulfide (2H-TaS$_2$) at ambient pressure, is boosted by applying hydrostatic pressures up to 30GPa, thereby inducing a typical dome-shaped superconducting…

The influence of external pressure on the charge-density-wave (CDW) ground state of the quasi-one-dimensional two-leg ladder compound Sr$_{10}$Ca$_{4}$Cu$_{24}$O$_{41}$ has been studied by optical reflectivity measurements as a function of…

Superconductivity · Physics 2018-02-02 C. A. Kuntscher , A. Huber , M. Hücker

Suppressing of an ordered state that competes with superconductivity is one route to enhance superconducting transition temperatures. Whereas the effect of suppressing magnetic states is still not fully understood, materials featuring…

We discover superconductivity (SC) in LaAgSb$_2$ at ambient pressure and its close correlation with a charge density wave (CDW) under pressure. The superconducting transition temperature ($T_c$) exhibits a sharp peak at the CDW critical…

Superconductivity · Physics 2022-10-31 Kazuto Akiba , Nobuaki Umeshita , Tatsuo C. Kobayashi

We report the pressure response of charge-density-wave (CDW) and ferromagnetic (FM) phases of the rare-earth intermetallic SmNiC2 up to 5.5 GPa. The CDW transition temperature (T_{CDW}), which is reflected as a sharp inflection in the…

Strongly Correlated Electrons · Physics 2015-06-12 B. Woo , S. Seo , E. Park , J. H. Kim , D. Jang , T. Park , H. Lee , F. Ronning , J. D. Thompson , V. A. Sidorov , Y. S. Kwon

We present new data on the pressure dependence at 300 K of the optical reflectivity of CeTe$_3$, which undergoes a charge-density-wave (CDW) phase transition well above room temperature. The collected data cover an unprecedented broad…

Strongly Correlated Electrons · Physics 2012-01-11 M. Lavagnini , A. Sacchetti , C. Marini , M. Valentini , R. Sopracase , A. Perucchi , P. Postorino , S. Lupi , J. -H. Chu , I. R. Fisher , L. Degiorgi

Superconductivity is often found in a dome around quantum critical points, i.e. 2nd-order quantum phase transitions. Here, we show that an enhancement of superconductivity is avoided at the critical pressure of the charge-density-wave (CDW)…

Superconductivity · Physics 2021-09-01 Owen Moulding , Israel Osmond , Felix Flicker , Takaki Muramatsu , Sven Friedemann

Successive magnetic-field-induced charge-density-wave transitions in the molecular conductor $\alpha$-(BEDT-TTF)$_2$KHg(SCN)$_4$ are studied in the hydrostatic pressure regime, in which the zero field charge-density wave (CDW)state is…

Strongly Correlated Electrons · Physics 2018-01-09 D. Andres , M. V. Kartsovnik , W. Biberacher , K. Neumaier , I. Sheikin , H. Mueller

The effect of hydrostatic pressure (P) on charge density waves (CDW) in YBa2Cu3Oy has recently been controversial. Using NMR, we find that both the short-range CDW in the normal state and the long-range CDW in high fields are, at most,…

Superconductivity · Physics 2019-09-05 I. Vinograd , R. Zhou , H. Mayaffre , S. Krämer , R. Liang , W. N. Hardy , D. A. Bonn , M. -H. Julien

The structural characterization and electrical transport measurements at ambient and applied pressures of the compounds of the La(Ag1-xAux)Sb2 family are presented. Up to two charge density wave (CDW) transitions could be detected upon…

Materials Science · Physics 2022-12-01 Li Xiang , Dominic H. Ryan , Paul C. Canfield , Sergey L. Bud'ko

Charge density wave (CDW) instability is often found in phase diagrams of superconductors such as cuprates and certain transition-metal dichalcogenides. This proximity to superconductivity triggers the question on whether CDW instability is…

The effect of hydrostatic pressure (p<= 1.8 GPa) on the non-Fermi liquid state of U_2Pt_2In is investigated by electrical resistivity measurements in the temperature interval 0.3-300 K. The experiments were carried out on single-crystals…

Strongly Correlated Electrons · Physics 2009-10-31 P. Estrela , A. de Visser , T. Naka , F. R. de Boer , L. C. J. Pereira

The charge density wave (CDW) state in van der Waals systems shows interesting scaling phenomena as the number of layers can significantly affect the CDW transition temperature, $T_{CDW}$. However, it is often difficult to use conventional…

We report measurements of the electrical resistivity and ac magnetic susceptibility of single crystalline LaPt$_2$Si$_2$ under pressure, in order to investigate the interplay of superconductivity and CDW order. LaPt$_2$Si$_2$ exhibits a…

Superconductivity · Physics 2020-04-08 B. Shen , F. Du , R. Li , A. Thamizhavel , M. Smidman , Z. Y. Nie , S. S. Luo , T. Le , Z. Hossain , H. Q. Yuan

The intermetallic compound LaAgSb2 displays two charge-density-wave (CDW) transitions, which were detected with measurements of electrical resistivity (rho), magnetic susceptibility, and X-ray scattering; the upper transition takes place at…

Strongly Correlated Electrons · Physics 2009-11-13 M. S. Torikachvili , S. L. Bud'ko , S. A. Law , M. E. Tillman , E. D. Mun , P. C. Canfield

The two charge-density wave (CDW) transitions in NbSe$_3$ %at wave numbers at $\bm{q_1}$ and $\bm{q_2}$, occurring at the surface were investigated by scanning tunneling microscopy (STM) on \emph{in situ} cleaved $(\bm{b},\bm{c})$ plane.…

Mesoscale and Nanoscale Physics · Physics 2010-07-29 Christophe Brun , Zhao-Zhong Wang , Pierre Monceau , Serguei Brazovskii

We report the electronic structure of CuTe with a high charge density wave (CDW) transition temperature Tc = 335 K by angle-resolved photoemission spectroscopy (ARPES). An anisotropic charge density wave gap with a maximum value of 190 meV…

We report on the effects of hydrostatic pressure (HP) on the charge density wave observed in underdoped cuprates. We studied YBa$_2$Cu$_3$O$_{6.6}$ ($T_c$=61 K) using high-resolution inelastic x-ray scattering (IXS), and reveal an extreme…

Superconductivity · Physics 2018-01-24 S. M. Souliou , H. Gretarsson , G. Garbarino , A. Bosak , J. Porras , B. Keimer , M. Le Tacon
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