Phase Transitions in Ultrathin Films

The properties of ultrathin films have been studied within the framework of Ising model and the method of random-field interactions. It is shown that the Curie temperature is inversely proportional to the number of layers. Critical exponent has been obtained and it is shown that it does not depend on the type of crystalline lattice.

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Modelling study of phase transitions in amorphous ultrathin films

Journal of Physics Conference Series ◽

10.1088/1742-6596/633/1/012017 ◽

2015 ◽

Vol 633 ◽

pp. 012017

Author(s):

Afremov Leonid ◽

Petrov Aleksandr

Keyword(s):

Phase Transitions ◽

Ultrathin Films ◽

Modelling Study

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Thickness-driven first-order phase transitions in manganite ultrathin films

Physical Review B ◽

10.1103/physrevb.99.214419 ◽

2019 ◽

Vol 99 (21) ◽

Cited By ~ 2

Author(s):

Hongyan Chen ◽

Yang Yu ◽

Zhe Wang ◽

Yu Bai ◽

Hanxuan Lin ◽

...

Keyword(s):

Phase Transitions ◽

Ultrathin Films ◽

First Order ◽

First Order Phase

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Metal-to-Insulator Transition in Ultrathin Manganite Heterostructures

Applied Sciences ◽

10.3390/app9010144 ◽

2019 ◽

Vol 9 (1) ◽

pp. 144 ◽

Cited By ~ 5

Author(s):

Zhaoliang Liao ◽

Jiandi Zhang

Keyword(s):

Thin Films ◽

Phase Transitions ◽

Transition Metal Oxides ◽

Ultrathin Films ◽

Insulator Transition ◽

Oxide Materials ◽

The Past ◽

Half Metal ◽

Metal To Insulator Transition ◽

Key Issues

Thickness-driven phase transitions have been widely observed in many correlated transition metal oxides materials. One of the important topics is the thickness-driven metal to insulator transition in half-metal La2/3Sr1/3MnO3 (LSMO) thin films, which has attracted great attention in the past few decades. In this article, we review research on the nature of the metal-to-insulator (MIT) transition in LSMO ultrathin films. We discuss in detail the proposed mechanisms, the progress made up to date, and the key issues existing in understanding the related MIT. We also discuss MIT in other correlated oxide materials as a comparison that also has some implications for understanding the origin of MIT.

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Terahertz single conductance quantum and topological phase transitions in topological insulator Bi2Se3 ultrathin films

Nature Communications ◽

10.1038/ncomms7552 ◽

2015 ◽

Vol 6 (1) ◽

Cited By ~ 35

Author(s):

Byung Cheol Park ◽

Tae-Hyeon Kim ◽

Kyung Ik Sim ◽

Boyoun Kang ◽

Jeong Won Kim ◽

...

Keyword(s):

Phase Transitions ◽

Topological Insulator ◽

Ultrathin Films ◽

Topological Phase ◽

Topological Phase Transitions ◽

Conductance Quantum

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Magnetic Concentration Phase Transitions in Ultrathin Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.683.69 ◽

2013 ◽

Vol 683 ◽

pp. 69-72 ◽

Cited By ~ 11

Author(s):

Leonid Afremov ◽

Ilia Ilyushin

Keyword(s):

Phase Transition ◽

Phase Transitions ◽

Ising Model ◽

Curie Temperature ◽

Percolation Threshold ◽

Ultrathin Films ◽

Magnetic State ◽

Critical Concentration ◽

Magnetic Moments ◽

Nearest Neighbors

Modeling study of magnetic and concentration phase transition in ultrathin films of diluted magnet has been carried out under approximation of random interaction between atomic magnetic moments of nearest neighbors and within the framework of Ising model. The dependence of Curie temperature on concentration of magnetic atoms was formed. It is shown that with increasing of thickness of ultrathin film the critical concentration of transition from unordered to ordered magnetic state decreases down to the value equal to the percolation threshold.

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