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Article: Metal to Orthogonal Metal Transition
Title | Metal to Orthogonal Metal Transition |
---|---|
Authors | |
Keywords | Topological Insulators Chern-Simons Theories Fermions |
Issue Date | 2020 |
Publisher | Chinese Physical Society & Institute of Physics Publishing Ltd. The Journal's web site is located at http://www.iop.org/EJ/journal/CPL |
Citation | Chinese Physics Letters, 2020, v. 37 n. 4, article no. 047103 How to Cite? |
Abstract | Orthogonal metal is a new quantum metallic state that conducts electricity but acquires no Fermi surface (FS) or quasiparticles, and hence orthogonal to the established paradigm of Landau's Fermi-liquid (FL). Such a state may hold the key of understanding the perplexing experimental observations of quantum metals that are beyond FL, i.e., dubbed non-Fermi-liquid (nFL), ranging from the Cu- and Fe-based oxides, heavy fermion compounds to the recently discovered twisted graphene heterostructures. However, to fully understand such an exotic state of matter, at least theoretically, one would like to construct a lattice model and to solve it with unbiased quantum many-body machinery. Here we achieve this goal by designing a 2D lattice model comprised of fermionic and bosonic matter fields coupled with dynamic Bbb Z2 gauge fields, and obtain its exact properties with sign-free quantum Monte Carlo simulations. We find that as the bosonic matter fields become disordered, with the help of deconfinement of the Bbb Z2 gauge fields, the system reacts with changing its nature from the conventional normal metal with an FS to an orthogonal metal of nFL without FS and quasiparticles and yet still responds to magnetic probe like an FL. Such a quantum phase transition from a normal metal to an orthogonal metal, with its electronic and magnetic spectral properties revealed, is calling for the establishment of new paradigm of quantum metals and their transition with conventional ones. |
Persistent Identifier | http://hdl.handle.net/10722/285493 |
ISSN | 2023 Impact Factor: 3.5 2023 SCImago Journal Rankings: 0.815 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chen, C | - |
dc.contributor.author | XU, XY | - |
dc.contributor.author | QI, Y | - |
dc.contributor.author | Meng, ZY | - |
dc.date.accessioned | 2020-08-18T03:53:56Z | - |
dc.date.available | 2020-08-18T03:53:56Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Chinese Physics Letters, 2020, v. 37 n. 4, article no. 047103 | - |
dc.identifier.issn | 0256-307X | - |
dc.identifier.uri | http://hdl.handle.net/10722/285493 | - |
dc.description.abstract | Orthogonal metal is a new quantum metallic state that conducts electricity but acquires no Fermi surface (FS) or quasiparticles, and hence orthogonal to the established paradigm of Landau's Fermi-liquid (FL). Such a state may hold the key of understanding the perplexing experimental observations of quantum metals that are beyond FL, i.e., dubbed non-Fermi-liquid (nFL), ranging from the Cu- and Fe-based oxides, heavy fermion compounds to the recently discovered twisted graphene heterostructures. However, to fully understand such an exotic state of matter, at least theoretically, one would like to construct a lattice model and to solve it with unbiased quantum many-body machinery. Here we achieve this goal by designing a 2D lattice model comprised of fermionic and bosonic matter fields coupled with dynamic Bbb Z2 gauge fields, and obtain its exact properties with sign-free quantum Monte Carlo simulations. We find that as the bosonic matter fields become disordered, with the help of deconfinement of the Bbb Z2 gauge fields, the system reacts with changing its nature from the conventional normal metal with an FS to an orthogonal metal of nFL without FS and quasiparticles and yet still responds to magnetic probe like an FL. Such a quantum phase transition from a normal metal to an orthogonal metal, with its electronic and magnetic spectral properties revealed, is calling for the establishment of new paradigm of quantum metals and their transition with conventional ones. | - |
dc.language | eng | - |
dc.publisher | Chinese Physical Society & Institute of Physics Publishing Ltd. The Journal's web site is located at http://www.iop.org/EJ/journal/CPL | - |
dc.relation.ispartof | Chinese Physics Letters | - |
dc.rights | Chinese Physics Letters. Copyright © Chinese Physical Society & Institute of Physics Publishing Ltd. | - |
dc.rights | This is an author-created, un-copyedited version of an article published in Chinese Physics Letters. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0256-307X/37/4/047103 | - |
dc.subject | Topological Insulators | - |
dc.subject | Chern-Simons Theories | - |
dc.subject | Fermions | - |
dc.title | Metal to Orthogonal Metal Transition | - |
dc.type | Article | - |
dc.identifier.email | Meng, ZY: zymeng@hku.hk | - |
dc.identifier.authority | Meng, ZY=rp02524 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1088/0256-307X/37/4/047103 | - |
dc.identifier.scopus | eid_2-s2.0-85084503531 | - |
dc.identifier.hkuros | 312871 | - |
dc.identifier.volume | 37 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | article no. 047103 | - |
dc.identifier.epage | article no. 047103 | - |
dc.identifier.isi | WOS:000532501700001 | - |
dc.publisher.place | China | - |
dc.identifier.issnl | 0256-307X | - |