Quantum spin liquids
نویسنده
چکیده
This paper presents an overview of the properties of magnetic insulators, with emphasis on quantum effects. In particular, the consequences of strong quantum fluctuations on the low-energy properties of a number of systems are reviewed: the occurrence of a spin gap in spin-1 chains and other low-dimensional magnets; the presence of low-lying singlet excitations in several frustrated magnets; the interplay of orbital and spin fluctuations in orbitally degenerate Mott insulators. This review is intended as a pedagogical introduction to the field, and the formalism has been kept at a minimal level.
منابع مشابه
Quantum Orders and Symmetric Spin Liquids
A concept – quantum order – is introduced to describe a new kind of orders that generally appear in quantum states at zero temperature. Quantum orders that characterize universality classes of quantum states (described by complex ground state wave-functions) is much richer then classical orders that characterize universality classes of finite temperature classical states (described by positive ...
متن کاملQuantum spin liquids: a review.
Quantum spin liquids may be considered 'quantum disordered' ground states of spin systems, in which zero-point fluctuations are so strong that they prevent conventional magnetic long-range order. More interestingly, quantum spin liquids are prototypical examples of ground states with massive many-body entanglement, which is of a degree sufficient to render these states distinct phases of matter...
متن کاملTime-Reversal Symmetric U(1) Quantum Spin Liquids
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We study possible quantum Uð1Þ spin liquids in three dimensions with time-reversal symmetry. We find a total of seven families of such Uð1Þ spin liquids, distinguished by the properties of their emergent electric or magnetic charges. We show how these spin liquids are related t...
متن کاملExotic topological order in fractal spin liquids
We present a large class of three-dimensional spin models that possess topological order with stability against local perturbations, but are beyond description of topological quantum field theory. Conventional topological spin liquids, on a formal level, may be viewed as condensation of stringlike extended objects with discrete gauge symmetries, being at fixed points with continuous scale symme...
متن کاملClassification of spin liquids on the square lattice with strong spin-orbit coupling
Spin liquids represent exotic types of quantum matter that evade conventional symmetry-breaking order even at zero temperature. Exhaustive classifications of spin liquids have been carried out in several systems, particularly in the presence of full SU(2) spin-rotation symmetry. Real magnetic compounds, however, generically break SU(2) spin symmetry as a result of spin-orbit coupling— which in ...
متن کاملQuantum liquids pdf
Quantum orders in symmetric spin liquids. Quantum orders and.These lectures are an introduction to world of quantum fluids and to phenomena. To motivate the study of quantum turbulence one has to appreciate the.In order to understand how nucleation proceeds in quantum liquids such as. Cavitation in liquid helium, but I also consider water, liquid hydrogen, wet.As you can imagine, the number of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000