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Torque and magnetization measurements in magnetic fields $H$ up to 14 T were performed on CeCoIn$_5$ single crystals. The amplitude of the paramagnetic torque shows an $H^{2.3}$ dependence in the mixed state and an $H^{2}$ dependence in the…

Strongly Correlated Electrons · Physics 2009-11-13 H. Xiao , T. Hu , T. A. Sayles , M. B. Maple , C. C. Almasan

Angular dependent torque measurements were performed on single crystals of CeCoIn$_5$, a heavy fermion superconductor ($T_{c0}$ = 2.3 K), in the temperature, $T$, range 1.9 K $\leq T \leq $ 20 K and magnetic fields $H$ up to 14 T. A large…

Strongly Correlated Electrons · Physics 2009-11-11 H. Xiao , T. Hu , T. A. Sayles , M. B. Maple , C. C. Almasan

Effects of Pauli paramagnetism on thermodynamic quantities in a vortex state, such as the specific heat $C$ and magnetization $M$, are studied using the quasiclassical Eilenberger formalism. We demonstrate that with an increase of…

Superconductivity · Physics 2009-11-11 H. Adachi , M. Ichioka , K. Machida

We present here some newer characteristics pertaining to paramagnetic Meissner effect like response in a single crystal of the low Tc superconducting compound 2H-NbSe2 via a detailed study of effects of perturbation on the field-cooled…

Superconductivity · Physics 2015-02-24 Santosh Kumar , C. V. Tomy , G. Balakrishnan , D. McK Paul , A. K. Grover

In order to investigate the inhomogeneity of the superconducting (SC) state in the overdoped high-$T_{\rm c}$ cuprates, we have measured the magnetic susceptibility, $\chi$, of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) single crystals in the overdoped…

Superconductivity · Physics 2009-11-13 Yoichi Tanabe , Tadashi Adachi , Keisuke Omori , Hidetaka Sato , Takashi Noji , Yoji Koike

Fe$_3$Ga$_4$ possesses a helical spin spiral with a complex competition between ferromagnetic and antiferromagnetic ground states. This competition generates multiple metamagnetic transitions that are governed by both applied magnetic field…

We study the magnetic susceptibility of mixed-valent La2-xSrxCoO4 single crystals in the doping range of 0.5<= x <= 0.8 for temperatures up to 1000 K. The magnetism below room temperature is described by paramagnetic Co2+ in the high-spin…

Strongly Correlated Electrons · Physics 2012-04-04 N. Hollmann , M. W. Haverkort , M. Benomar , M. Cwik , M. Braden , T. Lorenz

Observation of an anomalous temperature dependence of the spin susceptibility, along with a spin gap in NMR, in the quantum paramagnetic normal state of Iron Pnictides is a signature of an unusual metallic state. We argue that both these…

Strongly Correlated Electrons · Physics 2009-03-24 M. S. Laad , L. Craco

Investigations into the heterogeneous pinning properties of the vortex state created by partially nano-patterning single crystals of 2H-NbSe2 reveal an atypical magnetization response which is significantly drive dependent. Analysis of the…

Superconductivity · Physics 2012-01-20 Gorky Shaw , Jaivardhan Sinha , Shyam Mohan , S. S. Banerjee

In-plane torque measurements were performed on heavy fermion CeCoIn$_5$ single crystals in the temperature $T$ range 1.8 K $\leq T \leq 10$ K and applied magnetic field $H$ up to 14 T. The normal-state torque is given by $\tau_n \propto…

Strongly Correlated Electrons · Physics 2009-11-13 H. Xiao , T. Hu , T. A. Sayles , M. B. Maple , C. C. Almasan

We report high magnetic field linear magnetostriction experiments on CeCoIn$_5$ single crystals. Two features are remarkable: (i) a sharp discontinuity in all the crystallographic axes associated with the upper superconducting critical…

Strongly Correlated Electrons · Physics 2015-06-25 V. F. Correa , T. P. Murphy , C. Martin , K. M. Purcell , E. C. Palm , G. M. Schmiedeshoff , J. C. Cooley , S. W. Tozer

We report high magnetic field thermal-expansion and magnetostriction results on CeRhIn$_5$ single crystals. Several transitions, both first and second order, are observed when the field is applied perpendicular to the crystallographic…

Strongly Correlated Electrons · Physics 2009-11-10 V. F. Correa , W. E. Okraku , J. B. Betts , A. Migliori , J. L. Sarrao , A. H. Lacerda

We have studied the isothermal magnetization $M(H)$ of CeCo(In$_{1-x}$Cd$_x$)$_5$ with $x$ = 0.0075 and 0.01 down to 50 mK. Pronounced field-history dependent phenomena occur in the coexistence regime of the superconducting and…

Superconductivity · Physics 2016-10-12 Dong-Jin Jang , Luis Pedrero , L. D. Pham , Z. Fisk , Manuel Brando

Specific heat studies of CeRhIn5 as functions of pressure and magnetic field have been used to explore the relationship between magnetism and unconventional superconductivity, both of which involve the 4f electron of Ce. Results of these…

Strongly Correlated Electrons · Physics 2015-05-13 Tuson Park , J. D. Thompson

We report $^{115}$In nuclear magnetic resonance (NMR) measurements in CeCoIn$_5$ at low temperature ($T \approx 70$ mK) as a function of magnetic field ($H_0$) from 2 T to 13.5 T applied perpendicular to the $\hat c$-axis. NMR line shift…

Strongly Correlated Electrons · Physics 2009-11-13 G. Koutroulakis , V. F. Mitrović , M. Horvatić , C. Berthier , G. Lapertot , J. Flouquet

Despite extensive researches on manganites owing to widespread use in modern electronics, this class of metal oxides does not cease to surprise with its unique properties and new phenomena. Here we have studied structural and magnetic…

We report here the observation of anomalous paramagnetic signal(s) in the isofield field-cooled cool-down magnetization scans (MFCC(T)) recorded for a single crystal of a low Tc superconductor Ca3Ir4Sn13. Novel features emanating from the…

Superconductivity · Physics 2014-09-05 Santosh Kumar , Ravi P. Singh , A. Thamizhavel , C. V. Tomy , A. K. Grover

We show that in some trigonal and hexagonal crystals the Zeeman coupling of band electrons with an external magnetic field is strongly anisotropic and necessarily vanishes along the main symmetry axis. This leads to qualitative changes in…

Superconductivity · Physics 2021-05-12 K. V. Samokhin

We show results on the vortex core dissipation through current-voltage measurements under applied pressure and magnetic field in the superconducting phase of CeCoIn$_5$. We find that as soon as the system becomes superconducting, the vortex…

Superconductivity · Physics 2015-06-03 T. Hu , H. Xiao , T. A. Sayles , M. Dzero , M. B. Maple , C. C. Almasan

We experimentally investigate magnetocaloric effect for single crystals of MnTe altermagnet at the transition to the state with spontaneous spin polarization, i.e. well below the N\'eel temperature of MnTe. The isothermal magnetic entropy…

Mesoscale and Nanoscale Physics · Physics 2025-10-06 N. N. Orlova , V. D. Esin , A. V. Timonina , N. N. Kolesnikov , E. V. Deviatov
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