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We observe superconductivity below a critical temperature TC = 1.8 K in single-crystal Ir3Te8, which also exhibits normal-state diamagnetism and a linear temperature dependence of electrical resistivity for a wide temperature interval, 20 K…

The influence of hydrostatic pressure and ab-plane strain on the magnetic structure of FeTe is investigated from first principles. The results of calculations reveal a phase transition from antiferromagnetic double-stripe ordering at…

Superconductivity · Physics 2014-02-11 A. Ciechan , M. J. Winiarski , M. Samsel-Czekała

The recent discovery of large and non-saturating magnetoresistance (LMR) in WTe2 provides a unique playground to find new phenomena and significant perspective for potential applications. Here we report the first observation of…

In this letter, we report that the superconductivity transition temperature in beta-Fe1.01Se increases from 8.5 to 36.7 K under applied pressure of 8.9 GPa. It then decreases at higher pressure. A dramatic change in volume is observed at…

One of the most strikingly universal features of the high temperature superconductors is that the superconducting phase emerges in the close proximity of the antiferromagnetic phase, and the interplay between these two phases poses a long…

The superconducting ferromagnet RuSr2GdCu2O8 was investigated at high pressure. The intra-grain superconducting transition temperature, Tc, is resolved in ac-susceptibility as well as resistivity measurements. It is shown that the pressure…

Superconductivity · Physics 2009-11-07 B. Lorenz , R. L. Meng , Y. Y. Xue , C. W. Chu

High pressure electrical resistivity and x-ray diffraction experiments have been performed on Fe single crystals. The crystallographic investigation provides direct evidence that in the martensitic $bcc \rightarrow hcp$ transition at 14 GPa…

Superconductivity · Physics 2015-06-16 C. S. Yadav , G. Seyfarth , P. Pedrazzini , H. Wilhelm , R. Černý , D. Jaccard

Multiple unconventional superconducting phases are suspected to be driven by magnetic fluctuations in the heavy-fermion paramagnet UTe$_2$, and a challenge is to identify the signatures of the electronic correlations, including the magnetic…

Strongly Correlated Electrons · Physics 2022-10-17 T. Thebault , W. Knafo , M. Vališka , G. Lapertot , A. Pourret , D. Aoki , G. Knebel , D. Braithwaite

We examine the resistivity and thermopower of single crystal specimens of the pyrochlore oxide Cd2Re2O7 at pressures up to 2GPa. Thermopower proves to be a sensitive tool in the study of the phase diagram of Cd2Re2O7. The 200K…

Strongly Correlated Electrons · Physics 2009-11-10 N. Barisic , L. Forro , D. Mandrus , R. Jin , J. He , P. Fazekas

The pressure-temperature phase diagram of the orthorhombic ferromagnetic superconductor UCoGe was determined by resistivity measurements up to $10.5~$GPa. The Curie temperature $T_C$ is suppressed with pressure and vanishes at the critical…

Strongly Correlated Electrons · Physics 2016-09-14 Gael Bastien , Daniel Braithwaite , Dai Aoki , Georg Knebel , Jacques Flouquet

This work reports superconductivity studies in the intermetallic Ti$_{0.85}$Pd$_{0.15}$ performed in normal conditions and under hydrostatic pressure. The crystal structure of the compound has a body centered cubic at room temperature and…

Superconductivity · Physics 2020-05-20 C. Reyes-Damián , F. Morales , Esmeralda Martínez-Piñeiro , Roberto Escudero

A heavy-fermion paramagnet UTe$_2$ has been a strong candidate for a spin-triplet superconductor. Experiments on UTe$_2$ under pressure have been vigorously conducted, and rich phase diagrams have been suggested. Multiple superconducting…

Strongly Correlated Electrons · Physics 2025-12-01 Makoto Shimizu , Youichi Yanase

Resistance measurements on single crystals of CaK(Fe$_{1-x}$Mn$_x$)$_4$As$_4$ ($x$ = 0.024) were performed under hydrostatic pressure up to 5.15 GPa. The pressure dependence of the magnetic and superconducting transition temperatures and…

Superconductivity · Physics 2022-10-19 Li Xiang , Mingyu Xu , Sergey L. Bud'ko , Paul C. Canfield

The nature of unconventional superconductivity associated with charge density wave order in transition metal dichalcogenides is currently a debated issue. Starting from a normal state elec- tronic structure followed by a charge ordered…

Strongly Correlated Electrons · Physics 2017-01-02 S Koley

The discovery of multiple superconducting phases in UTe2 boosted research on correlated-electron physics. This heavy-fermion paramagnet was rapidly identified as a reference compound to study the interplay between magnetism and…

Superconductivity in iron pnictides is unconventional and pairing may be mediated by magnetic fluctuations in the Fe-sublattice. Pressure is a clean method to explore superconductivity in iron based superconductors by tuning the ground…

Superconductivity · Physics 2018-06-13 W. Liu , Y. F. Wu , X. J. Li , S. L. Bud'ko , P. C. Canfield , C. Panagopoulos , P. G. Li , G. Mu , T. Hu , C. C. Almasan , H. Xiao

We present the superconducting and normal state properties of CaPd2Ge2 single crystal investigated by magnetic susceptibility \chi, isothermal magnetization M, heat capacity C_p, in-plane electrical resistivity \rho and London penetration…

Superconductivity · Physics 2014-11-10 V. K. Anand , H. Kim , M. A. Tanatar , R. Prozorov , D. C. Johnston

Using high-resolution dilatometry, we study the thermodynamic response of the lattice parameters to superconducting order in a self-flux grown Ba(Fe0.92Co0.08)2As2 single crystal. The uniaxial pressure dependencies of the critical…

Superconductivity · Physics 2015-05-13 Frederic Hardy , Peter Adelmann , Hilbert v. Loehneysen , Thomas Wolf , Christoph Meingast

Competing and intertwined orders are ubiquitous in strongly correlated electron systems, such as the charge, spin, and superconducting orders in the high-Tc cuprates. Recent scanning tunneling microscopy (STM) measurements provide evidence…

We investigate transport through ionic liquid gated field effect transistors (FETs) based on exfoliated crystals of semiconducting WS$_2$. Upon electron accumulation, at surface densities close to -or just larger than- 10$^{14}$ cm$^{-2}$,…

Mesoscale and Nanoscale Physics · Physics 2015-01-27 Sanghyun Jo , Davide Costanzo , Helmuth Berger , Alberto F. Morpurgo
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