CoTe2: A Quantum Critical Dirac Metal with Strong Spin Fluctuations
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Materials"
DOI: 10.1002/adma.202300640
Abstract: Quantum critical points separating weak ferromagnetic and paramagnetic phases trigger many novel phenomena. Dynamical spin fluctuations not only suppress the long‐range order, but can also lead to unusual transport and even superconductivity. Combining quantum criticality… read more here.
Keywords: dirac metal; spin fluctuations; cote2 quantum; dirac ... See more keywords
New black holes with hyperscaling violation for the transports of quantum critical points with magnetic impurity
Sign Up to like & getrecommendations! Published in 2020 at "Journal of High Energy Physics"
DOI: 10.1007/jhep06(2020)128
Abstract: We consider the magneto-transports of quantum matters doped with magnetic impurities near the quantum critical points(QCP). For this, we first find new black hole solution with hyper-scaling violation which is dual to such system. By… read more here.
Keywords: critical points; quantum critical; black holes; transports quantum ... See more keywords
Duality between (2+1)d quantum critical points
Sign Up to like & getrecommendations! Published in 2019 at "Physics Reports"
DOI: 10.1016/j.physrep.2019.09.001
Abstract: Abstract Duality refers to two equivalent descriptions of the same theory from different points of view. Recently there has been tremendous progress in formulating and understanding possible dualities of quantum many body theories in 2… read more here.
Keywords: duality quantum; critical points; quantum critical; physics ... See more keywords
Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6−xSnx
Sign Up to like & getrecommendations! Published in 2021 at "Solid State Communications"
DOI: 10.1016/j.ssc.2021.114551
Abstract: Abstract We investigate the YbMn6Ge 6 − x Sn x alloys (4.00 ≤ x ≤ 5.55) by means of specific heat measurements in the temperature range 1.9 to 200 K. For x near ∼ 4.0,… read more here.
Keywords: enhanced sommerfeld; quantum critical; critical point; coefficient ... See more keywords
Charge density wave quantum critical point with strong enhancement of superconductivity
Sign Up to like & getrecommendations! Published in 2017 at "Nature Physics"
DOI: 10.1038/nphys4191
Abstract: An experimental study of the rare-earth intermetallic system LuPt2In reveals a strong enhancement of superconductivity near the charge density wave quantum critical point. This represents an unusual counter-example to cuprates, in which superconductivity and charge… read more here.
Keywords: density wave; charge density; strong enhancement; quantum critical ... See more keywords
Fermion-induced quantum critical points
Sign Up to like & getrecommendations! Published in 2017 at "Nature Communications"
DOI: 10.1038/s41467-017-00167-6
Abstract: A unified theory of quantum critical points beyond the conventional Landau–Ginzburg–Wilson paradigm remains unknown. According to Landau cubic criterion, phase transitions should be first-order when cubic terms of order parameters are allowed by symmetry in… read more here.
Keywords: order; fermion induced; quantum critical; critical points ... See more keywords
Restoration of quantum critical behavior by disorder in pressure-tuned (Mn,Fe)Si
Sign Up to like & getrecommendations! Published in 2017 at "npj Quantum Materials"
DOI: 10.1038/s41535-017-0049-0
Abstract: In second-order quantum phase transitions from magnetically ordered to paramagnetic states at T = 0, tuned by pressure or chemical substitution, a quantum critical point is expected to appear with critical behavior manifesting in the slowing down… read more here.
Keywords: pressure; order; quantum critical; critical point ... See more keywords
Tunable quantum critical point and detached superconductivity in Al-doped CrAs
Sign Up to like & getrecommendations! Published in 2019 at "npj Quantum Materials"
DOI: 10.1038/s41535-019-0188-6
Abstract: The origin of unconventional superconductivity and its relationship to a T = 0 K quantum critical point (QCP), which is hidden inside the dome of a superconducting state, have long been an outstanding puzzle in strongly correlated superconductors.… read more here.
Keywords: tunable quantum; point detached; quantum critical; critical point ... See more keywords
Coherent inflationary dynamics for Bose–Einstein condensates crossing a quantum critical point
Sign Up to like & getrecommendations! Published in 2017 at "Nature Physics"
DOI: 10.1038/s41567-017-0011-x
Abstract: Quantum phase transitions, transitions between many-body ground states, are of extensive interest in research ranging from condensed-matter physics to cosmology1–4. Key features of the phase transitions include a stage with rapidly growing new order, called… read more here.
Keywords: bose einstein; coherent inflationary; quantum critical; critical point ... See more keywords
Linear resistivity and Sachdev-Ye-Kitaev (SYK) spin liquid behavior in a quantum critical metal with spin-1/2 fermions
Sign Up to like & getrecommendations! Published in 2020 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2003179117
Abstract: Significance In “Planckian metals,” electrons dissipate energy at the fastest possible rate allowed by the fundamental laws of quantum mechanics, resulting in a linear temperature dependence of their electrical resistivity. Although observed for a number… read more here.
Keywords: resistivity; quantum critical; liquid behavior; spin ... See more keywords
Pure nematic quantum critical point accompanied by a superconducting dome
Sign Up to like & getrecommendations! Published in 2022 at "Proceedings of the National Academy of Sciences of the United States of America"
DOI: 10.1073/pnas.2110501119
Abstract: Significance The notion of the quantum critical point (QCP) is at the core of modern condensed matter physics. Near a QCP of the symmetry-breaking order, associated quantum-mechanical fluctuations are intensified, which can lead to unconventional… read more here.
Keywords: qcp; critical point; superconducting dome; quantum critical ... See more keywords