Cascade of magnetic-field-driven quantum phase transitions in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi mathvariant="normal">Ce</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Pd</mml:mi><mml:mn>20</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">Si</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:math>

نویسندگان

چکیده

Magnetically hidden order is a hypernym for electronic ordering phenomena that are visible to macroscopic thermodynamic probes but whose microscopic symmetry cannot be revealed with conventional neutron or x-ray diffraction. In handful of f-electron systems, the odd-rank multipoles leads parameters vanishing cross-section. Among them, Ce$_3$Pd$_{20}$Si$_6$ known its unique phase diagram exhibiting two distinct multipolar-ordered ground states (phases II and II'), separated by field-driven quantum transition associated putative change in ordered quadrupolar moment from $O_2^0$ $O_{xy}$. Using torque magnetometry at subkelvin temperatures, here we find another higher fields above 12 T, which appears only low-symmetry magnetic field directions $\mathbf{B} \parallel \langle11L\rangle$ $1 < L \leq 2$. While parameter this new II'' remains unknown, discovery renders material transitions between multipolar phases. They both clearly manifested magnetic-field dependence field-induced (111) Bragg intensities measured scattering [112]$. We also inelastic number nondegenerate collective excitations induced correlates phases same direction. Furthermore, excitation spectrum suggests may have different propagation vector, minimum dispersion represent Goldstone mode hidden-order phase.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cascade of magnetic-field-induced quantum phase transitions in a spin-1/2 triangular-lattice antiferromagnet.

We report magnetocaloric and magnetic-torque evidence that in Cs2CuBr4--a geometrically frustrated Heisenberg S=1/2 triangular-lattice antiferromagnet--quantum fluctuations stabilize a series of spin states at simple increasing fractions of the saturation magnetization Ms. Only the first of these states--at M=1/3Ms--has been theoretically predicted. We discuss how the higher fraction quantum st...

متن کامل

Pressure- and field-induced magnetic quantum phase transitions in TlCuCl3

Abstract TlCuCl3 is a quantum spin liquid of S = 1/2 Cu2+ dimers. Interdimer superexchange interactions give a three-dimensional magnon dispersion and a spin gap significantly smaller than the dimer coupling, which is closed by an applied hydrostatic pressure of approximately 2.5 kbar or by a magnetic field of 5.6 T, offering a unique opportunity to explore both the pressureand fieldinduced qua...

متن کامل

Magnetic-Field Induced Quantum Phase Transitions in Triangular-Lattice Antiferromagnets

Cs2CuBr4 and Ba3NiSb2O9 are magnetically described as quasi-two-dimensional triangular-lattice antiferromagnets with spin1 2 and 1, respectively. We show that both systems exhibit a magnetization plateau at one-third of the saturation magnetization Ms due to the interplay of spin frustration and quantum fluctuation. In Cs2CuBr4 that has a spatially anisotropic triangular lattice, successive mag...

متن کامل

Magnetic Field Induced Phase Transitions in YBa2Cu4O8

The c-axis resistivity measurements in YBa2Cu4O8 from Hussey et al. for magnetic field orientations along the c-axis as well as within the ab-plane are analyzed and interpreted using the scaling theory for static and dynamic classical critical phenomena. We identify a superconductor to normal conductor transition for both field orientations as well as a normal conductor to insulator transition ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical review

سال: 2022

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevb.105.174429