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  1. Article ; Online: The case of itinerant magnetism in CaMn

    Devanarayanan, Bharathiganesh / Sharma, Akariti / Patel, Pratik D / Singh, Navinder

    Journal of physics. Condensed matter : an Institute of Physics journal

    2022  Volume 34, Issue 46

    Abstract: We have applied the powerful self-consistent renormalization theory of spin fluctuations for the system ... ...

    Abstract We have applied the powerful self-consistent renormalization theory of spin fluctuations for the system CaMn
    Language English
    Publishing date 2022-09-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472968-4
    ISSN 1361-648X ; 0953-8984
    ISSN (online) 1361-648X
    ISSN 0953-8984
    DOI 10.1088/1361-648X/ac92b6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Spin correlations and spin-density wave phase in a finite-temperature quasi-one-dimensional electron gas.

    Kaur, Kulveer / Sharma, Akariti / Garg, Vinayak / Moudgil, R K

    Journal of physics. Condensed matter : an Institute of Physics journal

    2021  Volume 33, Issue 26

    Abstract: In this paper, we theoretically investigate the effect of temperature on spin correlations in an unpolarized quasi-one-dimensional electron gas (Q1DEG). The correlations are treated dynamically within quantum version of the self-consistent mean-field ... ...

    Abstract In this paper, we theoretically investigate the effect of temperature on spin correlations in an unpolarized quasi-one-dimensional electron gas (Q1DEG). The correlations are treated dynamically within quantum version of the self-consistent mean-field approach of Singwi
    Language English
    Publishing date 2021-05-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472968-4
    ISSN 1361-648X ; 0953-8984
    ISSN (online) 1361-648X
    ISSN 0953-8984
    DOI 10.1088/1361-648X/abf977
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Tunable phase transitions in half-Heusler TbPtBi compound.

    Patel, Pratik D / Sharma, Akariti / Devanarayanan, Bharathiganesh / Dutta, Paramita / Singh, Navinder

    Journal of physics. Condensed matter : an Institute of Physics journal

    2022  Volume 51, Issue 3

    Abstract: We report various phase transitions in half-Heusler TbPtBi compound using density functional theory. Specifically, the inclusion of spin-orbit coupling (SOC) leads to the band inversion resulting in the transition from the metallic to the topological ... ...

    Abstract We report various phase transitions in half-Heusler TbPtBi compound using density functional theory. Specifically, the inclusion of spin-orbit coupling (SOC) leads to the band inversion resulting in the transition from the metallic to the topological semimetallic phase. However, in the presence of SOC, there is a phase transition from the topological semimetal to the trivial semimetal when the material is subjected to compressive strain-7%. Subsequently, under the further increase of compressive strain(⩾​​-7%), we find an opening of a direct band gap at the point, driving the system from the trivial semimetallic to a semiconducting state with changes in the sequence of the bands. In the absence of SOC, only the transition from the metallic to the semiconducting phase is noticed. Under tensile strain, the TbPtBi compound maintains its phase as in the unstrained condition but with an increase in the hole pocket at the Fermi level, both in the absence and presence of SOC. These tunable phase transitions (especially as a fraction of strain) make this compound very promising for application in various quantum devices, such as highly sensitive strain gauges.
    Language English
    Publishing date 2022-11-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472968-4
    ISSN 1361-648X ; 0953-8984
    ISSN (online) 1361-648X
    ISSN 0953-8984
    DOI 10.1088/1361-648X/aca0d6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Dynamic correlation effects on correlational properties of finite-temperature quasi-one-dimensional electron gas.

    Kaur, Kulveer / Sharma, Akariti / Garg, Vinayak / Moudgil, R K

    Journal of physics. Condensed matter : an Institute of Physics journal

    2020  Volume 32, Issue 33, Page(s) 335403

    Abstract: We have studied correlational properties of quasi-one-dimensional electron gas at finite temperature T by incorporating the dynamics of electron correlations within the quantum version of the self-consistent mean-field approach of Singwi, Tosi, Land, and ...

    Abstract We have studied correlational properties of quasi-one-dimensional electron gas at finite temperature T by incorporating the dynamics of electron correlations within the quantum version of the self-consistent mean-field approach of Singwi, Tosi, Land, and Sjölander. Static structure factor, pair-correlation function, static density susceptibility, excess kinetic energy, and free correlation energy are calculated covering a wide range of temperature and electron number density. As at absolute zero temperature, the inclusion of dynamics of correlations results in stronger spatial electron correlations, with a pronounced peak in the static structure factor at wave vector q ∼ 3.5k
    Language English
    Publishing date 2020-04-14
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472968-4
    ISSN 1361-648X ; 0953-8984
    ISSN (online) 1361-648X
    ISSN 0953-8984
    DOI 10.1088/1361-648X/ab88f3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  5. Book ; Online: Tunable phase transitions in half-Heusler TbPtBi compound

    Patel, Pratik D. / Sharma, Akariti / Devanarayanan, Bharathiganesh / Dutta, Paramita / Singh, Navinder

    2022  

    Abstract: We report various phase transitions in half-Heusler TbPtBi compound using Density Functional Theory (DFT). Specifically, inclusion of spin-orbit coupling (SOC) leads to band inversion resulting in transition from the metallic to the topological ... ...

    Abstract We report various phase transitions in half-Heusler TbPtBi compound using Density Functional Theory (DFT). Specifically, inclusion of spin-orbit coupling (SOC) leads to band inversion resulting in transition from the metallic to the topological semimetallic phase. However, in presence of SOC, there is a phase transition from the topological semimetal to the trivial semimetal when the material is subjected to compressive strain ($\lt -7\%$). Subsequently, under further increase of compressive strain ($\ge -7\%$), we find an opening of a direct band gap at the $\Gamma$ point, driving the system from the trivial semimetallic to the semiconducting state with changes in the sequence of bands. In the absence of SOC, only transition from the metallic to the semiconducting phase is noticed. Under tensile strain, the TbPtBi compound maintains its phase as in the unstrained condition but with an increase in the hole pocket at the Fermi level, both in the absence and presence of SOC. These tunable phase transitions (especially as a fraction of strain) make this compound very promising for application in various quantum devices such as highly sensitive strain gauges.

    Comment: 16 pages, 6 figures; Revised version
    Keywords Condensed Matter - Materials Science
    Subject code 539
    Publishing date 2022-07-20
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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