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The investigation of transport characteristics in high-temperature superconductors under magnetic fields is one of the most important topics in condensed matter physics and transport applications. For YBa$_2$Cu$_3$O$_7$ (YBCO), the…

We present detailed, low temperature, magnetoresistance and specific heat data of single crystal YbNiSi3 measured in magnetic field applied along the easy magnetic axis, H || b. An initially antiferromagnetic ground state changes into a…

Strongly Correlated Electrons · Physics 2007-05-23 Sergey L. Bud'ko , Paul C. Canfield , Marcos A. Avila , Toshiro Takabatake

A novel property of the quantum critical heavy fermion superconductor $\beta$-YbAlB$_4$ is revealed theoretically. By analyzing the crystalline electronic field (CEF) on the basis of the hybridization picture, odd parity CEF is shown to…

Strongly Correlated Electrons · Physics 2019-02-08 Shinji Watanabe , Kazumasa Miyake

Recently, it was reported by MacLaughlin et al. in Phys. Rev. B 93, 214421 (2016) that \alpha-YbAl_{0.986}Fe_{0.014}B_4 exhibits an anomalous temperature dependence in the relaxation rate 1/T_{1} of $\mu$SR, and stressed that such…

Strongly Correlated Electrons · Physics 2018-08-16 Kazumasa Miyake , Shinji Watanabe

We study the temperature-magnetic field T-B phase diagrams of heavy fermion (HF) metals, and show that at sufficiently high temperatures outside the ordered phase the crossover temperature T*(B), regarded as the energy scale, follows a…

Strongly Correlated Electrons · Physics 2014-05-06 V. R. Shaginyan , A. Z. Msezane , K. G. Popov , G. S. Japaridze , V. A. Khodel

We have measured the magnetization of rare-earth chiral magnets Yb(Ni$_{1-x}$Cu$_x$)$_{3}$Al$_{9}$ for $x$=0 and 0.06 up to 14.5 T. Magnetization for the field direction $H \parallel c$, which is the hard axis at low temperatures and low…

Strongly Correlated Electrons · Physics 2022-02-11 D. Ito , T. Matsumura , S. Ohara

We report DC magnetization measurements on YbRh_2Si_2 at temperatures down to 0.04K, magnetic fields B<11.5T and under hydrostatic pressure P<1.3GPa. At ambient pressure a kink at B*=9.9T indicates a new type of field-induced transition…

Strongly Correlated Electrons · Physics 2013-06-25 Y. Tokiwa , P. Gegenwart , T. Radu , J. Ferstl , G. Sparn , C. Geibel , F. Steglich

We investigate bulk superconductivity in a high-quality single crystal of Bi$_2$Pd ($\beta$-Bi$_2$Pd, space group; I4/mmm) at temperatures less than 5.4 K by exploring its electrical resistivity, magnetic susceptibility, and specific heat.…

We measured the specific heat, the magnetization, and the magnetoresistance of a single crystal of ZrB12, which is superconducting below Tc ~ 6 K. The specific heat in zero field shows a BCS-type superconducting transition. The normal- to…

Superconductivity · Physics 2009-11-11 Yuxing Wang , Rolf Lortz , Yuriy Paderno , Vladimir Filippov , Satoko Abe , Ulrich Tutsch , Alain Junod

The thermoelectric power, $S(T)$, of the heavy fermions YbT$_{2}$Zn$_{20}$ ($T$ = Fe, Ru, Os, Ir, Rh, and Co) has been measured to characterize their strong electronic correlations. A large, negative, local minimum in $S(T)$ with…

Strongly Correlated Electrons · Physics 2015-05-19 E. D. Mun , S. Jia , S. L. Bud'ko , P. C. Canfield

Unconventional quantum critical phenomena observed in Yb-based periodic crystals such as YbRh$_2$Si$_2$ and $\beta$-YbAlB$_4$ have been one of the central issues in strongly correlated electron systems. The common criticality has been…

Strongly Correlated Electrons · Physics 2017-03-14 Shinji Watanabe , Kazumasa Miyake

The influence of YBa2Cu3O4 (YBCO) superconductor layer (S-layer) with varying thickness d-YBCO = 20 to 50 nm on the magnetic coupling between two La0.67Ca0.33MnO3 (LCMO) ferromagnet layers (F-layer, thickness d-LCMO = 50 nm) in F/S/F…

Superconductivity · Physics 2016-11-23 Rajni Porwal , Anurag Gupta , R. C. Budhani

The magnetization of three high-quality single crystals of YBa$_{2}$Cu$_{3}$O$_{6+x}$, from slightly overdoped to heavily underdoped,has been measured using torque magnetometry. Striking effects in the angular dependence of the torque for…

Superconductivity · Physics 2013-08-12 I. Kokanović , D. J. Hills , M. L. Sutherland , R. Liang , J. R. Cooper

The magnetic entropy of YbRh_2(Si_{0.95}Ge_{0.05})_2 is derived from low-temperature ($T\geq 18$ mK) specific heat measurements. Upon field-tuning the system to its antiferromagnetic quantum critical point unique temperature over magnetic…

Strongly Correlated Electrons · Physics 2009-11-10 P. Gegenwart , Y. Tokiwa , K. Neumaier , C. Geibel , F. Steglich

With the aim of improving the performance of classical paramagnetic salts for adiabatic refrigeration processes at the sub-Kelvin range, relevant thermodynamic parameters of some new Yb-based intermetallic compounds are analyzed and…

Materials Science · Physics 2018-07-24 Julian G. Sereni

We report temperature dependent resistivity, specific heat, magnetic susceptibility and thermoelectric power measurements made on the heavy fermion system YbNi2B2C, for both as grown and annealed single crystals. Our results demonstrate a…

Strongly Correlated Electrons · Physics 2009-11-07 M. A. Avila , S. L. Bud'ko , P. C. Canfield

In this letter, we present the superconducting property characterization of a phase pure reasonably good quality YBa2Cu3O7-{\delta} sample. Studied compound is crystallized in orthorhombic Pmmm space group with lattice parameters a, b, and…

Superconductivity · Physics 2014-01-21 Rajveer Jha , Poonam Rani , V. P. S Awana

The results of electrical resistance (1.4 - 300 K), magnetization (2-300 K) and heat-capacity (2 - 50 K) measurements in Y$_2$PdGe$_3$, found to crystallize in a AlB$_2$-derived hexagonalstructure, are reported. The results establish that…

Superconductivity · Physics 2007-05-23 E. V. Sampathkumaran , Subham Majumdar

Results of a study of dc-magnetization M(T, H), performed on a Nd0.6Pb0.4MnO3 single crystal in the temperature range around T_C (Curie temperature) which embraces the critical region | epsilon | = |T -T_C |/T_C <= 0.05 are reported. The…

Strongly Correlated Electrons · Physics 2009-11-10 M. Sahana , U. K. Roessler , Nilotpal Ghosh , Suja Elizabeth , H. L. Bhat , K. Doerr , D. Eckert , M. Wolf , K. -H. Mueller

We report thermoelectric and resitivity measurements of antiferromagnetic heavy fermion compound YRh2Si2 at low temperatures down and under high magnetic field. At low temperature, the thermoelectric power and the resistivity present…

Strongly Correlated Electrons · Physics 2013-04-23 A. Pourret , G. Knebel , G. Lapertot , T. D. Matsuda , J. Flouquet