Visualizing electronic structure changes across an antiferroelectric phase transition: Pb2MgWO6

1999 ◽  
Vol 9 (10) ◽  
pp. 2463-2466 ◽  
Author(s):  
Ram Seshadri ◽  
Guido Baldinozzi ◽  
Claudia Felser ◽  
Wolfgang Tremel
Keyword(s):  
Phase Transition ◽  
Electronic Structure ◽  
Antiferroelectric Phase ◽  
Structure Changes

scholarly journals From hidden order to antiferromagnetism: Electronic structure changes in Fe-doped URu2Si2

2021 ◽  
Vol 118 (27) ◽  
pp. e2020750118
Author(s):  
Emmanouil Frantzeskakis ◽  
Ji Dai ◽  
Cédric Bareille ◽  
Tobias C. Rödel ◽  
Monika Güttler ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electronic Structure ◽  
Fermi Level ◽  
Order Parameter ◽  
Heavy Fermion ◽  
Interaction Strength ◽  
Magnetization Vector ◽  
Angle Resolved Photoemission Spectroscopy ◽  
Hidden Order ◽  
Structure Changes

In matter, any spontaneous symmetry breaking induces a phase transition characterized by an order parameter, such as the magnetization vector in ferromagnets, or a macroscopic many-electron wave function in superconductors. Phase transitions with unknown order parameter are rare but extremely appealing, as they may lead to novel physics. An emblematic and still unsolved example is the transition of the heavy fermion compound URu2Si2 (URS) into the so-called hidden-order (HO) phase when the temperature drops below T0=17.5 K. Here, we show that the interaction between the heavy fermion and the conduction band states near the Fermi level has a key role in the emergence of the HO phase. Using angle-resolved photoemission spectroscopy, we find that while the Fermi surfaces of the HO and of a neighboring antiferromagnetic (AFM) phase of well-defined order parameter have the same topography, they differ in the size of some, but not all, of their electron pockets. Such a nonrigid change of the electronic structure indicates that a change in the interaction strength between states near the Fermi level is a crucial ingredient for the HO to AFM phase transition.

Rem and Rheed Studies of Pb Adsorption on Si(111)

1992 ◽  
Vol 280 ◽  
Author(s):  
Yasumasa Tanishiro ◽  
Masahiko Fukuyamaand ◽  
Katsumichi Yagi
Keyword(s):  
Phase Transition ◽  
Heat Treatment ◽  
Phase Diagram ◽  
Surface Structures ◽  
Structure Changes ◽  
Incommensurate Structures

ABSTRACTStructure changes of Si(111)-Pb surfaces due to deposition and heat treatment are studied by REM-RHEED. Surface structures observed are summarized as a phase diagram. Formation of an incommensurate layer(α) and a phase transition between incommensurate structures of α and α' is described.

Thermodynamics of Antiferroelectric Phase Transition in PbZrO 3

2003 ◽  
Vol 283 (1) ◽  
pp. 75-86 ◽  
Author(s):  
H. Fujishita ◽  
Y. Ishikawa
Keyword(s):  
Phase Transition ◽  
Antiferroelectric Phase

Antiferroelectric phase transition inSr9In(PO4)7

2004 ◽  
Vol 70 (17) ◽  
Author(s):  
S. Yu. Stefanovich ◽  
A. A. Belik ◽  
M. Azuma ◽  
M. Takano ◽  
O. V. Baryshnikova ◽  
...  
Keyword(s):  
Phase Transition ◽  
Antiferroelectric Phase

scholarly journals Phase transition and electronic structure evolution of MoTe2 induced by W substitution

2018 ◽  
Vol 98 (14) ◽  
Author(s):  
Wencan Jin ◽  
Theanne Schiros ◽  
Yi Lin ◽  
Junzhang Ma ◽  
Rui Lou ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electronic Structure ◽  
Structure Evolution
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