The enigma of supersolidity

@article{Balibar2010TheEO,
  title={The enigma of supersolidity},
  author={S{\'e}bastien Balibar},
  journal={Nature},
  year={2010},
  volume={464},
  pages={176-182}
}
A 'supersolid' is a quantum solid in which a fraction of the mass is superfluid. As a remarkable consequence, it is rigid, but part of its mass is able to flow owing to quantum physical processes. This paradoxical state of matter was considered as a theoretical possibility as early as 1969, but its existence was discovered only in 2004, in 4He. Since then, intense experimental and theoretical efforts have been made to explain the origins of this exotic state of matter. It now seems that its… 

Superfluidity: How Quantum Mechanics Became Visible

In December 1937, J.F. Allen and A.D. Misener in Cambridge and simultaneously P. Kapitsa in Moscow discovered the superfluidity of liquid helium. In March 1938, F. London proposed that superfluidity

Holographic supersolids

Abstract A supersolid is a system that presents long-range order and shear rigidity as a solid but which also supports a non-dissipative superflow as a superfluid. From an effective perspective,

Theory of Supersolidity

After reviewing some experimental facts, and early theories, I sketch the Hartree-Fock description of Boson solids, emphasizing the contrast with the Fermion case in that the natural solution is a

Colloquium: Supersolids: What and where are they?

The ongoing experimental and theoretical effort aimed at understanding nonclassical rotational inertia in solid helium has sparked renewed interest in the supersolid phase of matter, its microscopic

Josephson effects in one-dimensional supersolids

We demonstrate that superflow past an obstacle is possible in a solid phase in the one-dimensional Gross-Pitaevskii equation with a finite-range two-body interaction. The phenomenon we find is

Dynamics of one-dimensional supersolids

We study dynamical properties of one-dimensional supersolids in the framework of the Gross-Pitaevskii equation with a finite-range two-body interaction in the presence of an obstacle. Above a

Dynamical theory of superfluidity in one dimension.

TLDR
Applications of these results to the understanding of the superfluid properties of helium confined in 1D pores with nanometer diameter, dislocations in solid 4He, and ultracold atomic gases are also briefly discussed.

Defect-induced supersolidity with soft-core bosons

TLDR
For low particle densities, the system is shown to feature a solid phase in which zero-point vacancies emerge spontaneously and give rise to superfluid flow of particles through the crystal, the first example of defect-induced, continuous-space supersolidity consistent with the Andreev–Lifshitz–Chester scenario.

Supersolidity of cnoidal waves in an ultracold Bose gas

A one-dimensional Bose-Einstein condensate may experience nonlinear periodic modulations known as ``cnoidal waves''. We argue that such structures represent promising candidates for the study of

Supersolid symmetry breaking from compressional oscillations in a dipolar quantum gas

TLDR
This work demonstrates the breaking of two symmetries owing to the coexisting superfluid and crystal properties of a supersolid, and suggests the presence of two separate quantum phase transitions between the superfluid, supersolid and solid-like configurations.
...

References

SHOWING 1-10 OF 100 REFERENCES

Is the supersolid superfluid

An analysis of previous theories of superfluidity of quantum solids is presented in relation to the nonclassical rotational moment of inertia (NCRM) found first in Kim and Chan experiments. A theory

What makes a crystal supersolid?

For nearly half a century the supersolid phase of matter has remained mysterious, not only eluding experimental observation, but also generating a great deal of controversy among theorists. The

Observation of classical rotational inertia and nonclassical supersolid signals in solid 4He below 250 mK.

TLDR
The nonclassical rotational inertia signal is not a universal property of solid 4He but can be eliminated through an annealing of the solid helium sample, which has important implications for the understanding of the supersolid state.

Solid ^4He and the Supersolid Phase: from Theoretical Speculation to the Discovery of a New State of Matter? : A Review of the Past and Present Status of Research( New Frontiers of Quantum Fluids and Solids)

The possibility of a supersolid state of matter, i.e., a crystalline solid exhibiting superfluid properties, first appeared in theoretical studies about forty years ago. After a long period of little

CXXXVI. On the quantum mechanics of helium II

Abstract The quantum mechanics of a system of identical interacting particles must lead to the classical hydrodynamic equations of motion at high temperatures, because of the correspondence

The Discovery of Superfluidity

Two of the greatest physics discoveries in the first half of the 20th century were superconductivity and superfluidity. Superconductivity involves the frictionless conduction of electricity in wires,

A Gross-Pitaevskii Treatment for Supersolid Helium

TLDR
It is argued that every pure Bose solid’s ground state is a supersolid, and a study of the temperature-dependent relaxation dynamics of helium shows that defects may play an important role in describing its supersolid behavior.

Evidence for a Superglass State in Solid 4He

TLDR
A new theoretical argument and a study of the temperature-dependent relaxation dynamics of helium show that defects may play an important role in describing its supersolid behavior, and provides evidence for a “supersolid glass,” where glassy behavior of crystal dislocations and superfluidity can coexist.

Theory of Superconductivity

IN two previous notes1, Prof. Max Born and I have shown that one can obtain a theory of superconductivity by taking account of the fact that the interaction of the electrons with the ionic lattice is

Transport Phenomena in Helium II

F. LONDON1 has recently proposed a new conception of helium II, according to which this liquid can be regarded as a degenerate Bose-Einstein gas, that is, as a system in which one fraction of the
...