Zobrazeno 1 - 10
of 712
pro vyhledávání: '"Jesche A"'
We present a comprehensive study of the structural, magnetic, and thermodynamic properties, as well as the adiabatic demagnetization refrigeration (ADR) performance of NaGdP$_2$O$_7$. Although NaGdP$_2$O$_7$ exhibits antiferromagnetic ordering at a N
Externí odkaz:
http://arxiv.org/abs/2411.04805
Publikováno v:
Phys. Rev. B 110, 035140 (2024)
The synergy of strong spin-orbit coupling and electron-electron interactions gives rise to unconventional topological states, such as topological Mott insulator, Weyl semimetal, and quantum spin liquid. In this study, we have grown single crystals of
Externí odkaz:
http://arxiv.org/abs/2406.18971
Publikováno v:
J. Phys.: Condens. Matter 37 (2025) 013001
The manifold of energetically degenerate configurations arising from competing interactions in frustrated magnets gives rise to an enhanced entropy at lowest temperatures, which can be utilized for adiabatic demagnetization refrigeration (ADR). We re
Externí odkaz:
http://arxiv.org/abs/2405.15697
The performance of permanent magnets is intricately tied to their magnetic hysteresis loop. In this study, we investigate the heavy-fermion ferromagnet CeAgSb$_2$ through magnetization measurements under uniaxial stress. We observe a 2400 % increase
Externí odkaz:
http://arxiv.org/abs/2404.19320
Autor:
Mukharjee, Prashanta K., Shen, Bin, Erdmann, Sebastian, Jesche, Anton, Kaiser, Julian, Baral, Priya R., Zaharko, Oksana, Gegenwart, Philipp, Tsirlin, Alexander A.
Publikováno v:
Phys. Rev. B 110, L140407 (2024)
We use magnetometry, calorimetry, and high-resolution capacitive dilatometry, as well as single-crystal neutron diffraction to explore temperature-field phase diagram of the anisotropic honeycomb magnet BaCo$_2$(AsO$_4)_2$. Our data reveal four disti
Externí odkaz:
http://arxiv.org/abs/2403.04466
Publikováno v:
Phys. Rev. B 109, 205152 (2024)
We present electrical resistivity measurements on the prototypical heavy-fermion metal YbRh$_{2}$Si$_{2}$ (YRS) under $a$-axis tensile and compressive strain and focus on the evolution of the resistivity maximum near 136~K that arises from the interp
Externí odkaz:
http://arxiv.org/abs/2402.00630
Publikováno v:
Phys. Rev. B 108, 235130 (2023)
Honeycomb Na$_2$IrO$_3$ is a prototype spin-orbit Mott insulator and Kitaev magnet. We report a combined structural and electrical resistivity study of Na$_2$IrO$_3$ single crystals. Laue back-scattering diffraction indicates twinning with $\pm 120^\
Externí odkaz:
http://arxiv.org/abs/2311.07275
Autor:
Hua, Nelson, Breitner, Franziska, Jesche, Anton, Huang, Shih-Wen, Rüegg, Christian, Gegenwart, Philipp
Manipulating the size and orientation of quantum materials is often used to tune emergent phenomena, but precise control of these parameters is also necessary from an experimental point of view. Various synthesis techniques already exist, such as epi
Externí odkaz:
http://arxiv.org/abs/2310.18644
Publikováno v:
Phys. Rev. B 110, 134405 (2024)
The spin-reversal in dilute Li$_2$(Li$_{1-x}$Fe$_{x}$)N with $x < 1$ % is dominated by resonant quantum tunneling of spatially well-separated states. We report on the effect of finite couplings between those states that give rise to cooperative, simu
Externí odkaz:
http://arxiv.org/abs/2310.18185
Publikováno v:
Phys. Rev. B 108, 224415 (2023)
We report the synthesis, characterization, low-temperature magnetic, and thermodynamic measurements of the novel milli-Kelvin adiabatic demagnetization refrigeration (mK-ADR) candidate material NaYbGeO$_4$ which exhibits a distorted square lattice ar
Externí odkaz:
http://arxiv.org/abs/2310.00961