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Electrical magnetoresistance and tunnel diode oscillator measurements were performed under external magnetic fields up to 41 T applied along the crystallographic b-axis (hard axis) of UTe$_2$ as a function of temperature and applied…

Interference of proximity induced superconducting correlations in mesoscopic metallic rings is sensitive to the magnetic flux $\Phi$ inside these rings. This is the reason for magnetoconductance oscillations in such systems. We detected…

Superconductivity · Physics 2007-05-23 V. N. Antonov , H. Takayanagi , F. K. Wilhelm , A. D. Zaikin

A microwave cavity perturbation technique is used to probe the interlayer electrodynamics within the vortex state of the organic superconductor kappa-(BEDT-TTF)2Cu(NCS)2. A Josephson plasma mode is observed which is extremely sensitive to…

Superconductivity · Physics 2007-05-23 S. Hill , M. M. Mola , J. S. Qualls

MnP, a superconductor under pressure, exhibits a ferromagnetic order below TC~290 K followed by a helical order with the spins lying in the ab plane and the helical rotation propagating along the c axis below Ts~50 K at ambient pressure. We…

A tuned tank circuit in combination with a nonmetallic diamond anvil cell has been successfully used to measure the change in critical field with angle in k-(ET)2Cu(NCS)2 at pressures up to 1.75 kbar and at temperatures down to 70 mK. The…

Superconductivity · Physics 2007-05-23 C. Martin , C. C. Agosta , S. W. Tozer , H. A. Radovan , Tatsue Kinoshota , M. Tokumoto

The magneto-electronic field effects in organic semiconductors at high magnetic fields are described by field-dependent mixing between singlet and triplet states of weakly bound charge carrier pairs due to small differences in their Land\'e…

Mesoscale and Nanoscale Physics · Physics 2018-08-15 G. Joshi , M. Y. Teferi , S. Jamali , M. Groesbeck , J. van Tol , R. McLaughlin , Z. V. Vardeny , J. M. Lupton , H. Malissa , C. Boehme

We have developed a novel BEDT-TTF-based organic conductor, $\kappa$-(BEDT-TTF)$_2 m$-HOOCC$_6$H$_4$SO$_3$ ($\kappa$-$m$-SBA), and propose it as a candidate for altermagnet. Tight-binding band calculations of $\kappa$-$m$-SBA provide a…

Materials Science · Physics 2026-05-01 Kohei Tokura , Takato Masuta , Kazushi Aoyama , Hiroki Akutsu , Yasuhiro Nakazawa , Scott S. Turner

Many experiments suggest that the unidentified low temperature phase (LTP) of alpha-(BEDT-TTF)_2KHg(SCN)_4 is most likely unconventional charge density wave (UCDW). To further this identification we present our theoretical study of the…

Strongly Correlated Electrons · Physics 2009-11-07 Balázs Dóra , Attila Virosztek , Kazumi Maki

Using magnetoresistance measurements as a function of applied magnetic field and its direction of application, we present sharp angular-dependent magnetoresistance oscillations for the electron-doped cuprates in their low-temperature…

Superconductivity · Physics 2009-11-10 P. Fournier , M. -E. Gosselin , S. Savard , J. Renaud , I. Hetel , P. Richard , G. Riou

We have discovered an oscillatory magnetoresistance phenomenon in a wide range of superconducting systems, with a periodicity that is essentially independent of temperature, transport current, magnetic field, and even material parameters.…

Superconductivity · Physics 2016-08-10 Milind N. Kunchur , Charles L. Dean , Boris I. Ivlev

Recent experiments on type-II Weyl semimetals such as WTe$_2$, MoTe$_2$, Mo$_x$W$_{1-x}$Te$_2$ and WP$_2$ reveal remarkable transport properties in presence of a strong magnetic field, including an extremely large magnetoresistance and an…

Mesoscale and Nanoscale Physics · Physics 2018-09-19 Maximilian Trescher , Emil J. Bergholtz , Johannes Knolle

We conducted a systematic angular dependence study of nonlinear magnetoresistance in NiFe/Pt bilayers at variable temperature and field using the Wheatstone bridge method. We successfully disentangled magnon magnetoresistance from other…

Mesoscale and Nanoscale Physics · Physics 2019-10-02 Yanjun Xu , Yumeng Yang , Ziyan Luo , Yihong Wu

The quasiparticle scattering rates in high-quality crystals of the quasi-two-dimensional superconductor $\kappa$-(BEDT-TTF)$_2$Cu(NCS)$_2$ ~are studied using the Shubnikov-de Haas effect and MHz penetration-depth experiments. There is…

Strongly Correlated Electrons · Physics 2009-11-07 John Singleton , Charles Mielke , William Hayes , John Schlueter

In spite of extensive experimental studies of the angular dependent magnetoresistance (ADMR) of the low temperature phase (LTP) of alpha-(BEDT-TTF)_2KHg(SCN)_4 about a decade ago, the nature of LTP remains elusive. Here we present a new…

Strongly Correlated Electrons · Physics 2009-11-07 Balázs Dóra , Kazumi Maki , Bojana Korin-Hamzic , Mario Basletic , Attila Virosztek , Mark V. Kartsovnik , Harald Müller

MnAs exhibits a first-order phase transition from a ferromagnetic, high-spin metal NiAs-type hexagonal phase to a paramagnetic, lower-spin insulator MnP-type orthorhombic phase at T_C = 313 K. Here, we report the results of neutron…

Materials Science · Physics 2009-11-07 J. Mira , F. Rivadulla , J. Rivas , A. Fondado , R. Caciuffo , F. Carsughi , T. Guidi , J. B. Goodenough

The spin excitations from the nonmagnetic charge-ordered insulating state of $\alpha$-(BEDT-TTF)$_2$I$_3$ at ambient pressure have been investigated by probing the static and low-frequency dynamic spin susceptibilities via site-selective…

Strongly Correlated Electrons · Physics 2016-09-08 Kyohei Ishikawa , Michihiro Hirata , Dong Liu , Kazuya Miyagawa , Masafumi Tamura , Kazushi Kanoda

Partial suppression of superconductivity by fast cooling has been observed in the organic superconductor $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br by two means: a marked sample size effect on the magnetic susceptibility and direct imaging of…

Superconductivity · Physics 2007-05-23 N. Yoneyama , T. Sasaki , N. Kobayashi , Y. Ikemoto , H. Kimura

We report a detailed experimental and theoretical study on the effect of hydrostatic pressure on the structural and magnetic aspects of the layered honeycomb antiferromagent $\alpha$-RuCl$_{3}$. Magnetic susceptibility measurements…

Peculiarities observed in the field dependencies of the magnetic torque in k-(BETS)2Mn[N(CN)2]3 measured at T=1.5K, H=0-150kOe, have been explained from the viewpoint of the two interacting spin subsystems, one associated with d-electron…

Strongly Correlated Electrons · Physics 2016-02-18 O. M. Vyaselev , S. V. Simonov , N. D. Kushch , M. V. Kartsovnik , W. Biberacher

Transition metal dichalcogenides (TMDC) stand out with their high chemical stability and the possibility to incorporate a wide range of magnetic species between the layers. The behavior of conduction electrons in such materials intercalated…