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Related papers: Vanishing RKKY interactions in Ce-based cage compo…

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We investigate the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between two spins located at two quantum dots embedded in an Aharonov-Bohm (AB) ring. In such a system the RKKY interaction, which oscillates as a function of the distance…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Yasuhiro Utsumi , Jan Martinek , Patrick Bruno , Hiroshi Imamura

CeCu$_2$Si$_2$ is an exemplary correlated electron metal that features two domes of unconventional superconductivity in its temperature-pressure phase diagram. The first dome surrounds an antiferromagnetic quantum critical point, whereas…

Strongly Correlated Electrons · Physics 2017-08-23 Y. Lai , S. M. Saunders , D. Graf , A. Gallagher , K. -W. Chen , F. Kametani , T. Besara , T. Siegrist , A. Shekhter , R. E. Baumbach

In this letter, we consider through simulation Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions between nanomagnets sitting on a conductive surface, and voltage-controlled gating thereof for low-energy switching of nanomagnets for possible…

Mesoscale and Nanoscale Physics · Physics 2016-08-03 Bahniman Ghosh , Rik Dey , Leonard F. Register , Sanjay K. Banerjee

Cs$_2$ Rydberg-ground molecules consisting of a Rydberg, $nD_{J}$ (33 $\leq$ $n$ $\leq$ 39), and a ground state atom, 6$S_{1/2} (F=$3 or 4$)$, are investigated by photo-association spectroscopy in a cold atomic gas. We observe vibrational…

Atomic and Molecular Clusters · Physics 2020-10-07 Suying Bai , Xiaoxuan Han , Jingxu Bai , Yuechun Jiao , Jianming Zhao , Suotang Jia , Georg Raithel

Magnetic susceptibility and specific heat versus temperature measurements on polycrystalline samples of Sr3Cr2O8 and the isostructural, nonmagnetic compound Sr3V2O8 are reported. A Curie-Wiess fit to the high-temperature susceptibility data…

Strongly Correlated Electrons · Physics 2010-11-17 Yogesh Singh , D. C. Johnston

Indirect exchange coupling in magnetic multilayers, also known as the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, is known to be highly effective in controlling the interlayer alignment of the magnetization. This coupling is typically…

We theoretically investigate the features of Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange interaction between two magnetic impurities, mediated by the interfacial bound states inside a domain wall (DW). The latter separates the two regions…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Ganesh C. Paul , SK Firoz Islam , Paramita Dutta , Arijit Saha

Mixed valency in intermetallics with lanthanide cations is well established as a pathway to unusual charge transport, complex magnetism, and superconductivity. In this work, we report a comprehensive study of the structural, magnetic,…

Materials Science · Physics 2025-11-10 Hui-Fei Zhai , Sergey L. Bud'ko , Jacob W. Fritsky , Jason F. Khoury

We performed optical spectroscopy measurement on single crystal of CeTe$_3$, a rare-earth element tri-telluride charge density wave (CDW) compound. The optical spectra are found to display very strong temperature dependence. Besides a large…

Strongly Correlated Electrons · Physics 2013-05-29 B. F. Hu , P. Zheng , R. H. Yuan , T. Dong , B. Cheng , Z. G. Chen , N. L. Wang

We calculate the Kondo temperature ($T_K$) and crystal-field levels of strongly correlated multiorbital systems solving the Anderson Impurity Model with the finite U Non-Crossing Approximation (UNCA) in its simplest scheme, that is,…

Strongly Correlated Electrons · Physics 2007-11-27 P. Roura-Bas , V. Vildosola , L. O. Manuel , A. M. Llois

Magnetic heat capacity measurements of a high-quality single crystal of the dipole-octupole pyrochlore Ce$_2$Hf$_2$O$_7$ down to a temperature of $T = 0.02$ K are reported. These show a two-peaked structure, with a Schottky-like peak at…

We show that there are diversified Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions between magnetic impurities, mediated by itinerant electrons, in a centrosymmetric crystal respecting a nonsymmorphic space group. We take the $P4/nmm$…

Mesoscale and Nanoscale Physics · Physics 2023-06-16 Zhongyi Zhang , Shengshan Qin , Chen Fang , Jiangping Hu , Fu-chun Zhang

We have performed low-temperature transport measurements on a double quantum dot-quantum wire coupled device and demonstrated non-local control of the Kondo effect in one dot by manipulating the electronic spin states of the other. We…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 S. Sasaki , S. Kang , K. Kitagawa , M. Yamaguchi , S. Miyashita , T. Maruyama , H. Tamura , T. Akazaki , Y. Hirayama , H. Takayanagi

Transport and magnetic properties of a 4$f^{2}$ fcc lattice compound, PrCdNi$_4$, were studied. The magnetic susceptibility, $\chi(T)$, follows the Curie--Weiss law from 300 K to 20 K, as expected for a free Pr$^{3+}$ ion. As the…

We consider a spin-fermion model consisting of free electrons coupled to classical spins, where the latter are embedded in a quasi one-dimensional superlattice structure consisting of spin blocks separated by spinless buffers. Using a…

Strongly Correlated Electrons · Physics 2020-09-30 Sabyasachi Tarat , Jian Li , Richard T. Scalettar , Rubem Mondaini

Low-energy rattling modes and their effects on superconductivity are studied in the cage compound GaxV2Al20. A series of polycrystalline samples of 0 < x =< 0.6 are examined through resistivity, magnetic susceptibility, and heat capacity…

Superconductivity · Physics 2012-11-16 Zenji Hiroi , Atsushi Onosaka , Yoshihiko Okamoto , Jun-ichi Yamaura , Hisatomo Harima

Long-range metastable molecules consisting of two cesium atoms in high Rydberg states have been observed in an ultracold gas. A sequential three-photon two-color photoassociation scheme was employed to form these molecules in states which…

Atomic Physics · Physics 2016-11-17 Heiner Saßmannshausen , Johannes Deiglmayr

X-ray diffraction, electrical resistivity, magnetization, specific heat, and thermoelectric power measurements are presented for single crystals of the new filled skutterudite compound {\CeOsAs}, which reveal phenomena that are associated…

Strongly Correlated Electrons · Physics 2009-11-13 R. E. Baumbach , P. C. Ho , T. A. Sayles , M. B. Maple , R. Wawryk , T. Cichorek , A. Pietraszko , Z. Henkie

The Y_0.5Ca_0.5BaCo_4O_7 compound exhibits four magnetic anomalies at the temperatures 387, 281, 52, and 14 K; all anomalies show characteristics typical for spin freezing into disordered states: frequency dependent transition temperature…

Strongly Correlated Electrons · Physics 2009-11-11 Martin Valldor

Substitution of nickel by copper in the heavy fermion system CeNi$_{9-x}$Cu$_x$Ge$_4$ alters the local crystal field environment of the Ce$^{3+}$-ions. This leads to a quantum phase transition near $x\approx0.4$, which is not only driven by…

Strongly Correlated Electrons · Physics 2010-03-23 L Peyker , C Gold , E-W Scheidt , H Michor , T Unruh , A Senyshyn , O Stockert , W Scherer